New engine

slderos · 10-26-2003, 11:00 AM

I just put a new engine in 400 miles ago and was going to put in Royal Purple at 700 miles. Is this a good idea or should I stay with non synthetic engine oil? If I can't use synthetic how many miles do I need to have on the engine before I can?

87natty · 10-26-2003, 11:38 AM

That's a good question.

Orlando_87GN · 10-26-2003, 11:42 AM

If you change your oil on regular intervals, just use the cheap dino oil. If you wish to spend more for some kind of peace of mind, use Mobile1 or some other synthetic. Of course that is my opinion and peoples feelings about oils are down right emotional!

ILBCNU6 · 10-26-2003, 01:43 PM

Never put synthetic oil in a fresh engine. The rings wiil never seat. Why? Synthetics are too slippery and this prevents proper ring seating. I ran my new engine first with non-detergent oil and drained it after 1/2 hr running, also the filter. Then ran it another few hundred miles and drained it again, and filter. I kept the rpms variable and boost under 10 #. Then ran "Kendall" 10w30 after that. I wouldn't run synthetic oil until the engine has about 7K miles on it. Oil in my book is the cheapest investment in keeping the engine running great. Dino oil is by far cheaper doing frequent oil changes. Gene

<small>[ October 28, 2003, 12:39 AM: Message edited by: ILBCNU6 ]</small>

ULYCYC · 10-26-2003, 03:03 PM

I changed to Mobil 1 after rebuild around 2500 miles. I don't see how Royal purple will help you at $8.00 a qt. Mobil 1 or reg dino will work fine

slderos · 10-26-2003, 03:23 PM

I think I am getting the picture that Royal Purple isn't all that popular. I only paid $5.50 a quart though. What is dino oil?

The Radius Kid · 10-26-2003, 03:32 PM

Non synthetic.Stick with to at least 3,000 miles.
Most are good,but we tested Texaco Havoline and found it stood up to the testing the best.

CallMeMud · 10-26-2003, 03:35 PM

Dino oil is standard oil....from Dinosaurs millions of years later.

I use Kendall 20/50. Love it! Change it all the time. I do run Mobil 1 in my truck but that is also so I don't have to change it but every 5k miles and it always looks good. With the fuel and alcohol I am dumping in the 3.8 Buick I feel it is better to change it often.

teamgn87 · 10-26-2003, 05:39 PM

Alot of people say to break in a motor with regular dino oil and switch to synthetic later.The reason is always the same-the rings will never seat.Yet Chevrolet and Ford both use synthetic oil(Mobil 1) from the start in some of their cars(Corvette and Cobra R).Do they know something we dont?

nboost · 10-26-2003, 08:17 PM

is it better to run a sythetic oil rather than a regular oil regardless of milage?

Steve Wood · 10-26-2003, 09:07 PM

As does Porsche. I have always used synthetic after the first oil change after cam break in...never had a problem seating rings.

I kinda wonder if this is more folk lore than fact? Modern rings, if the hone job is done correctly, seat almost immediately.

NCBuickGN · 10-27-2003, 12:02 AM

There's still an amazing amount of mythology amongst the general populace re: synthetic oils & lubricants.

The Radius Kid · 10-27-2003, 01:34 AM

No mythology involved here.The car manufacturers and the oil producers used to say the same thing back when the synth's were first introduced enmass.
These are 80's style engines with 80's build technology.
The newer engines are all roller[hipo anyway].
The need for proper cam breakin is not there like it used to be.
Cams do tend to break rather quickly[sometimes not],but there is still metal to metal seating that goes on for the first couple thousand miles or so.
Remember again,these engines are an 80's design.

Besides,what can it hurt?

Steve Wood · 10-27-2003, 08:02 AM

That is the reason that we use moly disulphide to break the cam in with. I believe you will find that the manufacturers were using syn long ago in certain cars.

What can it hurt? Probably nothing, but, that is not the point....the point is that we continue to promote some things as valid when they are really the untested beliefs of the guy down the road that heard them from some other guy who also believed it.

Also, did not someone earlier justify the belief by saying the engine would use oil? I have not seen a cam make an engine use oil.....

ULYCYC · 10-27-2003, 08:13 AM

Here are a few letters to Mobil about Mobil 1 oil:

I found this info useful, however, I'd like to pass on some info regarding
Mobil 1. A friend of mine here in the southwest purchased a new Porsche RSR
two years ago from the factory. It was shipped with Mobil 1 in the engine.
Upon receiving the car in Houston, he was directed to contact the Porsche
factory immediately, prior to turning the car over at all. On calling the
factory, they instructed him to change the oil befroe starting the engine.
They advised against running the engine with Mobil 1, and said that they
had contracts with Mobil whereby they were required to ship the car with
Mobil 1, but did not have to instruct the purchasor to use the oil. The
factory advised him to run Valvoline 20-50 racing oil in his engine. He
asked what the problem with Mobil 1 was, but the company simply said not to
use it. I don't know what the reason was. Maybe Porsche had had some
failures using Mobil 1, or maybe it was a ongoing intercompany dispute, or
the racing division bucking the head office.... who knows. I just thought I
would pass this along. For my 2 cents, I usually go with what I know until
I can be sure that I'm not going to make an error, before I would try a new
oil product when breaking in an engine, particularly an expensive race
engine.

Steve C.

Subject: Mobil 1 for breaking in an engine?

>I believe that many of you will find the following mails between me and the
Mobil Corporation of interest. First comes the final answer of Mobil, then
the previous mails.
>
>Cristiano Rossi
>thpnma 02869
>
>----- Oprindelig meddelelse -----
>Fra: Mobil Oil <mobil@ourdataworks.com>
>Til: Cristiano Rossi <rossi@image.dk>
>Sendt: 3. november 1999 17:24
>Emne: Re: Mobil 1 for breaking in an engine?
>
>
> Thank you for contacting Mobil.
>Today's engines are built with much tighter tolerances and much improved
machining compared to the engines of 10 and 20 years ago. The old concept of
"engine break-in" involved two primary elements:
>
> Removing any metal flashing (called swarf) or abrasive material
leX-Mozilla-Status: 0009
>Allowing valves and rings to "seat" properly.
>
> Today's engines do not require these break-in periods. In fact, Mobil 1
has shown excellent control of oil consumption in the industry standard ASTM
Sequence III E test, which uses a completely rebuilt engine for each new
test run. This includes freshly honed cylinders, new pistons, and
>new rings (compression and oil control). The engine is exposed to only the
test oil after rebuild. The outstanding oil consumption control of Mobil 1
in this test demonstrates that the old "seating" issue is not of concern in
well machined engines. And don't forget that Mobil 1 is used as
>initial fill on Corvette and Porsche engines.
>However, if the engine rebuilder is using older machining equipment or
lower quality components, it can leave you with an engine containing swarf
or abrasive material inside the engine. In this situation, you would be best
served by using a short drain interval on your initial oil fill.
>Mobil 1 will still work in this situation, but it would be less expensive
to use a conventional oil for this first, short duration fill.
>
> If you have any additional questions, you may contact us at our E-mail
address: lubes@ffx.mobil.com or by phone at 1-800-ASKMOBIL.
>>
>>
>>
>> Cristiano Rossi wrote:
>>
>> > To the Mobil Corporation.
>> >
>> > On 13. july 1999 I sent you the following e-mail:
>> >
>> > ---------------------------------
>> >
>> > Mobil 1 for breaking in an engine?
>> >
>> > To The Mobil Corporation.
>> >
>> > I have a question that I would like you to answer. You can often read
recommendations like the following in the newsgroups etc.:
>> >
>> > >""One thing that you should be carefull of is the Mobil 1. It is
great oil
>> > >and will make an engine run better and last longer. The problem is
that it
>> > >is not suitable for CAM break-in. It lacks the correct extreem
pressure
>> > >lubricants for this purpose. I have been advised by Cam makers to
break in
>> > >about 500 miles with regular oil before mobil 1. Then Ring makers
recomend
>> > >2000 miles for proper ring seat before using mobil 1.""
>> >
>> > I normally use Mobil 1, and I have also used it for breaking in a
completely rebuilt engine. Is it true that it was a bad idea to break in the
engine with synthetic oil?
>> >
>> > Thank you in advance for your kind reply.
>> >
>> > ------------------------
>> >
>> > On 17. july 1999 you sent me the following reply:
>> >
>> > ------------------------
>> >
>> > Mr. Rosi,
>> >
>> > Thank you for contacting Mobil. Please accept our apologies for the
>> > delay in replying to your email.
>> >
>> > You can start using Mobil 1 in new vehicles at any time. In fact, Mobil
>> > 1 is the factory fill in Corvette LS1, LT-1 and LT-5 engines. And
>> > Mobil and Porsche just announced a new partnership that will also have
>> > all Porsche cars manufactured at the Zuffenhausen plant lubricated with
>> > Mobil 1. One of the myths that persists about Mobil 1 is that new
>> > engines require a break-in period with conventional oil. Current engine
>> > manufacturing technology does not require this break-in period. As the
>> > decisions by the engineers who design the Corvette and Porsche engines
>> > indicate, Mobil 1 can be used in an engine from the day you drive the
>> > car off the show room floor.
>> >
>> > If yoX-Mozilla-Status: 0009questions, you may contact us at our E-mail
>> > address: lubes@ffx.mobil.com or by phone at 1-800-ASKMOBIL.
>> >
>> > ---------------------------
>> >
>> > On 17. july 1999, I sent you the following questions (sent to the
address <lubes@ffx.mobil.com>):
>> >
>> > ---------------------------
>> >
>> > To the Mobil Oil Corporation.
>> >
>> > Thank you for your interesting reply to my question. I understand that
with the current engine technology it is not necessary to break in an engine
with conventional oil.
>> >
>> > I have breaken in a completely rebuilt Ford 351 Cleveland engine with
Mobil 1. The engine has now been running about 10.000 miles, only on Mobil
1. The Cleveland is an engine from the early seventies, and can probably not
meet the standards of what you call "modern engine technology".
>> >
>> > I have two additional questions:
>> >
>> > 1) Would it have been wiser to break in this old (but rebuilt) engine
with regular Mobil oil, and then change to Mobil 1 after the break-in
period?
>> >
>> > 2) If it is recommended to break in older engines with regular oil, can
the possible damage now be corrected by using a regular oil for a certain
period?
>> >
>> > I thank you in advance for your kind reply.
>> >
>> > --------------------------
>> >
>> > I have not yet received any answer to my last questions dated the 19.
july 1999.
>> >
>> > I would be glad to receive your kind reply.
>> >
>> > Thank you in advance.
>> >
>> > Cristiano Rossi
>> > rossi@image.dk
>>

10-26-2003, 11:00 AM	#1 (permalink)
slderos Lurker Join Date: Aug 2003 Location: Missouri Posts: 32	New engine I just put a new engine in 400 miles ago and was going to put in Royal Purple at 700 miles. Is this a good idea or should I stay with non synthetic engine oil? If I can't use synthetic how many miles do I need to have on the engine before I can? __________________ 1987 GN TE61 Turbo, 4" MAF, Translator Plus, 42.5 Fuel inj, 3" down pipe, hot wire kit with Walbro fuel pump. 1970 Plymouth Roadrunner 440 six pack 3.23 suregrip. 04 Mach 1 Mustang (wifes)slowest of the lot

10-26-2003, 11:38 AM	#2 (permalink)
87natty Register Boozer Join Date: Mar 2003 Location: South San Diego Posts: 3,681	That's a good question. __________________ 'What do you know about surfing? You're from G*ddamn New Jersey!'

10-26-2003, 11:42 AM	#3 (permalink)
Orlando_87GN Resident Idiot Join Date: Sep 2000 Location: Orlando, FL USA Posts: 10,136	If you change your oil on regular intervals, just use the cheap dino oil. If you wish to spend more for some kind of peace of mind, use Mobile1 or some other synthetic. Of course that is my opinion and peoples feelings about oils are down right emotional! __________________ Check Out MikesStuff4Sale.com to view my used parts! ------------------------------------------------ 1987 Buick Grand National Budget 4.1, 204/214 cam, TA-49 Turbo, Stockish Heads, V4, MSD50's, TH DP, JayJackson 62mm TB, Translator plus Extender powered. 3680# with pilot ------------------------------------------------ 1987 Turbo T with 5,888 Original miles FOR SALE! ------------------------------------------------ 1993 Mazda RX-7 4.1 Buick Powered 11.20 @ 128mph (2.4 60')!

10-26-2003, 03:03 PM	#5 (permalink)
ULYCYC Fuhgeddaboudit Join Date: Sep 2000 Location: Brooklyn, NY Posts: 16,162	I changed to Mobil 1 after rebuild around 2500 miles. I don't see how Royal purple will help you at $8.00 a qt. Mobil 1 or reg dino will work fine __________________ ED BAKER 87-T, Maplight equipped rear view mirror.. 93 PARK AVE"SUPERCHARGED" BPG#1458 My Photo Page buickperformancegroup.com

10-26-2003, 03:23 PM	#6 (permalink)
slderos Lurker Join Date: Aug 2003 Location: Missouri Posts: 32	I think I am getting the picture that Royal Purple isn't all that popular. I only paid $5.50 a quart though. What is dino oil? __________________ 1987 GN TE61 Turbo, 4" MAF, Translator Plus, 42.5 Fuel inj, 3" down pipe, hot wire kit with Walbro fuel pump. 1970 Plymouth Roadrunner 440 six pack 3.23 suregrip. 04 Mach 1 Mustang (wifes)slowest of the lot

10-26-2003, 01:43 PM	#4 (permalink)
ILBCNU6 Registered User Join Date: Dec 2001 Location: New Hope, MN. US Posts: 679	Never put synthetic oil in a fresh engine. The rings wiil never seat. Why? Synthetics are too slippery and this prevents proper ring seating. I ran my new engine first with non-detergent oil and drained it after 1/2 hr running, also the filter. Then ran it another few hundred miles and drained it again, and filter. I kept the rpms variable and boost under 10 #. Then ran "Kendall" 10w30 after that. I wouldn't run synthetic oil until the engine has about 7K miles on it. Oil in my book is the cheapest investment in keeping the engine running great. Dino oil is by far cheaper doing frequent oil changes. Gene <small>[ October 28, 2003, 12:39 AM: Message edited by: ILBCNU6 ]</small>

10-26-2003, 03:32 PM	#7 (permalink)
The Radius Kid Registered User Join Date: May 2001 Location: Stoney Creek,Ontario,Canada Posts: 8,983	Non synthetic.Stick with to at least 3,000 miles. Most are good,but we tested Texaco Havoline and found it stood up to the testing the best. __________________ Politics is the art of glad-handing,passionate bllsht and hidden agendas.

10-26-2003, 03:35 PM	#8 (permalink)
CallMeMud Someone Crown My Ass! Join Date: Jun 2002 Location: North East, MD USA Posts: 7,017	Dino oil is standard oil....from Dinosaurs millions of years later. I use Kendall 20/50. Love it! Change it all the time. I do run Mobil 1 in my truck but that is also so I don't have to change it but every 5k miles and it always looks good. With the fuel and alcohol I am dumping in the 3.8 Buick I feel it is better to change it often. __________________ 2002 T/A LS-1 26k Happy now girls

10-26-2003, 05:39 PM	#9 (permalink)
teamgn87 too many toys Join Date: Dec 2002 Location: staten island n.y. Posts: 1,038	Alot of people say to break in a motor with regular dino oil and switch to synthetic later.The reason is always the same-the rings will never seat.Yet Chevrolet and Ford both use synthetic oil(Mobil 1) from the start in some of their cars(Corvette and Cobra R).Do they know something we dont? __________________ 87 GN-TE61,60/65lb mototrons,walbro 340,ck trans,3000 stall,3"dp,3"single shot exhaust,adj.fpr.,adj wastegate,comp 980s,turbotweak chip,SM 2.1,full body brace kit,vdo guages,egt, rjc pp,Taylor 409s,homemade cold air,Snow Performance boost cooler,Eagle alloys Direct Scan, G-body parts SLIC and mini starter from Turbobuicks.com 88LX-331 ci Vortech S-trim,MSD,TFS,E-303,GT-40,Tremec,Pro-Flow,MAC,Flowmaster,31 spline strange axles,detroit diff,c-clip eliminator 03 Mercury Sable-family car 98 Eddie Bauer Expedition-car hauler 2007 Suzuki Hayabusa GSXR 1300-Slip-ons,frame sliders,Xenon lighting,blue led kit--makes things blurry, QUICKLY! Friends dont let friends drive naturally aspirated.

10-26-2003, 08:17 PM	#10 (permalink)
nboost Frequent Poster Join Date: May 2003 Location: Tucson, Az Posts: 228	is it better to run a sythetic oil rather than a regular oil regardless of milage?

10-26-2003, 09:07 PM	#11 (permalink)
Steve Wood An American American Join Date: Sep 2000 Location: East of Eden, Texas Posts: 36,378	As does Porsche. I have always used synthetic after the first oil change after cam break in...never had a problem seating rings. I kinda wonder if this is more folk lore than fact? Modern rings, if the hone job is done correctly, seat almost immediately. __________________ ------------------ 'A government that is big enough to give you everything you want, is also big enough to take away everything you have.' - Thomas Jefferson I think one should worry more when people are lining up to get out of a country rather than into it. If they're sneaking in, we must be doing something right. The Chronicles of Zap, from the early 21st century www.vortexbuicks-etc.com

10-27-2003, 12:02 AM	#12 (permalink)
NCBuickGN Frequent Poster Join Date: Jan 2002 Location: US of A Posts: 796	There's still an amazing amount of mythology amongst the general populace re: synthetic oils & lubricants. __________________ Truth, Honesty,& Justice Matter

10-27-2003, 01:34 AM	#13 (permalink)
The Radius Kid Registered User Join Date: May 2001 Location: Stoney Creek,Ontario,Canada Posts: 8,983	No mythology involved here.The car manufacturers and the oil producers used to say the same thing back when the synth's were first introduced enmass. These are 80's style engines with 80's build technology. The newer engines are all roller[hipo anyway]. The need for proper cam breakin is not there like it used to be. Cams do tend to break rather quickly[sometimes not],but there is still metal to metal seating that goes on for the first couple thousand miles or so. Remember again,these engines are an 80's design. Besides,what can it hurt? __________________ Politics is the art of glad-handing,passionate bllsht and hidden agendas.

10-27-2003, 08:02 AM	#14 (permalink)
Steve Wood An American American Join Date: Sep 2000 Location: East of Eden, Texas Posts: 36,378	That is the reason that we use moly disulphide to break the cam in with. I believe you will find that the manufacturers were using syn long ago in certain cars. What can it hurt? Probably nothing, but, that is not the point....the point is that we continue to promote some things as valid when they are really the untested beliefs of the guy down the road that heard them from some other guy who also believed it. Also, did not someone earlier justify the belief by saying the engine would use oil? I have not seen a cam make an engine use oil..... __________________ ------------------ 'A government that is big enough to give you everything you want, is also big enough to take away everything you have.' - Thomas Jefferson I think one should worry more when people are lining up to get out of a country rather than into it. If they're sneaking in, we must be doing something right. The Chronicles of Zap, from the early 21st century www.vortexbuicks-etc.com

10-27-2003, 08:13 AM	#15 (permalink)
ULYCYC Fuhgeddaboudit Join Date: Sep 2000 Location: Brooklyn, NY Posts: 16,162	Here are a few letters to Mobil about Mobil 1 oil: I found this info useful, however, I'd like to pass on some info regarding Mobil 1. A friend of mine here in the southwest purchased a new Porsche RSR two years ago from the factory. It was shipped with Mobil 1 in the engine. Upon receiving the car in Houston, he was directed to contact the Porsche factory immediately, prior to turning the car over at all. On calling the factory, they instructed him to change the oil befroe starting the engine. They advised against running the engine with Mobil 1, and said that they had contracts with Mobil whereby they were required to ship the car with Mobil 1, but did not have to instruct the purchasor to use the oil. The factory advised him to run Valvoline 20-50 racing oil in his engine. He asked what the problem with Mobil 1 was, but the company simply said not to use it. I don't know what the reason was. Maybe Porsche had had some failures using Mobil 1, or maybe it was a ongoing intercompany dispute, or the racing division bucking the head office.... who knows. I just thought I would pass this along. For my 2 cents, I usually go with what I know until I can be sure that I'm not going to make an error, before I would try a new oil product when breaking in an engine, particularly an expensive race engine. Steve C. Subject: Mobil 1 for breaking in an engine? >I believe that many of you will find the following mails between me and the Mobil Corporation of interest. First comes the final answer of Mobil, then the previous mails. > >Cristiano Rossi >thpnma 02869 > >----- Oprindelig meddelelse ----- >Fra: Mobil Oil <mobil@ourdataworks.com> >Til: Cristiano Rossi <rossi@image.dk> >Sendt: 3. november 1999 17:24 >Emne: Re: Mobil 1 for breaking in an engine? > > > Thank you for contacting Mobil. >Today's engines are built with much tighter tolerances and much improved machining compared to the engines of 10 and 20 years ago. The old concept of "engine break-in" involved two primary elements: > > Removing any metal flashing (called swarf) or abrasive material leX-Mozilla-Status: 0009 >Allowing valves and rings to "seat" properly. > > Today's engines do not require these break-in periods. In fact, Mobil 1 has shown excellent control of oil consumption in the industry standard ASTM Sequence III E test, which uses a completely rebuilt engine for each new test run. This includes freshly honed cylinders, new pistons, and >new rings (compression and oil control). The engine is exposed to only the test oil after rebuild. The outstanding oil consumption control of Mobil 1 in this test demonstrates that the old "seating" issue is not of concern in well machined engines. And don't forget that Mobil 1 is used as >initial fill on Corvette and Porsche engines. >However, if the engine rebuilder is using older machining equipment or lower quality components, it can leave you with an engine containing swarf or abrasive material inside the engine. In this situation, you would be best served by using a short drain interval on your initial oil fill. >Mobil 1 will still work in this situation, but it would be less expensive to use a conventional oil for this first, short duration fill. > > If you have any additional questions, you may contact us at our E-mail address: lubes@ffx.mobil.com or by phone at 1-800-ASKMOBIL. >> >> >> >> Cristiano Rossi wrote: >> >> > To the Mobil Corporation. >> > >> > On 13. july 1999 I sent you the following e-mail: >> > >> > --------------------------------- >> > >> > Mobil 1 for breaking in an engine? >> > >> > To The Mobil Corporation. >> > >> > I have a question that I would like you to answer. You can often read recommendations like the following in the newsgroups etc.: >> > >> > >""One thing that you should be carefull of is the Mobil 1. It is great oil >> > >and will make an engine run better and last longer. The problem is that it >> > >is not suitable for CAM break-in. It lacks the correct extreem pressure >> > >lubricants for this purpose. I have been advised by Cam makers to break in >> > >about 500 miles with regular oil before mobil 1. Then Ring makers recomend >> > >2000 miles for proper ring seat before using mobil 1."" >> > >> > I normally use Mobil 1, and I have also used it for breaking in a completely rebuilt engine. Is it true that it was a bad idea to break in the engine with synthetic oil? >> > >> > Thank you in advance for your kind reply. >> > >> > ------------------------ >> > >> > On 17. july 1999 you sent me the following reply: >> > >> > ------------------------ >> > >> > Mr. Rosi, >> > >> > Thank you for contacting Mobil. Please accept our apologies for the >> > delay in replying to your email. >> > >> > You can start using Mobil 1 in new vehicles at any time. In fact, Mobil >> > 1 is the factory fill in Corvette LS1, LT-1 and LT-5 engines. And >> > Mobil and Porsche just announced a new partnership that will also have >> > all Porsche cars manufactured at the Zuffenhausen plant lubricated with >> > Mobil 1. One of the myths that persists about Mobil 1 is that new >> > engines require a break-in period with conventional oil. Current engine >> > manufacturing technology does not require this break-in period. As the >> > decisions by the engineers who design the Corvette and Porsche engines >> > indicate, Mobil 1 can be used in an engine from the day you drive the >> > car off the show room floor. >> > >> > If yoX-Mozilla-Status: 0009questions, you may contact us at our E-mail >> > address: lubes@ffx.mobil.com or by phone at 1-800-ASKMOBIL. >> > >> > --------------------------- >> > >> > On 17. july 1999, I sent you the following questions (sent to the address <lubes@ffx.mobil.com>): >> > >> > --------------------------- >> > >> > To the Mobil Oil Corporation. >> > >> > Thank you for your interesting reply to my question. I understand that with the current engine technology it is not necessary to break in an engine with conventional oil. >> > >> > I have breaken in a completely rebuilt Ford 351 Cleveland engine with Mobil 1. The engine has now been running about 10.000 miles, only on Mobil 1. The Cleveland is an engine from the early seventies, and can probably not meet the standards of what you call "modern engine technology". >> > >> > I have two additional questions: >> > >> > 1) Would it have been wiser to break in this old (but rebuilt) engine with regular Mobil oil, and then change to Mobil 1 after the break-in period? >> > >> > 2) If it is recommended to break in older engines with regular oil, can the possible damage now be corrected by using a regular oil for a certain period? >> > >> > I thank you in advance for your kind reply. >> > >> > -------------------------- >> > >> > I have not yet received any answer to my last questions dated the 19. july 1999. >> > >> > I would be glad to receive your kind reply. >> > >> > Thank you in advance. >> > >> > Cristiano Rossi >> > rossi@image.dk >> __________________ ED BAKER 87-T, Maplight equipped rear view mirror.. 93 PARK AVE"SUPERCHARGED" BPG#1458 My Photo Page buickperformancegroup.com

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