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Synthetic Motor Oil and Engine Break-in (archive)

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Posted by XTech on September 29, 1998 at 08:26:52:

I recently changed my oil to Mobil 1 full synthetic 15W-50 at 3000 miles in my ///M. It seems even the technical people disagree with respect to engine break-in and synthetic oil. I thought this might be of interest to others considering changing to synthetic motor oil.

I e-mailed the following question to the Mobil & Redline Oil technical info area:

"There seems to be an ongoing debate about break-in periods for new engines in hi-performance automobiles and synthetic motor oils. The question is do new engines require a break-in period for piston rings, valves, etc to wear-in before switching to synthetic motor oil. Any advice on this subject would be appreciated. Thanks!"

I received the following replies back from Mobil & Redline:


New engines do require a certain period of time to seat the rings. That may be any where from a few miles to 800 miles. We would recommend in a street engine that you wait about 2,000 miles before installing Red Line Oil. By waiting this period of time you are sure the rings have seated and most of the initial wear is out of the engine and into the oil and filter.

Thank you for your interest in Red Line Oil.

Dave Granquist


Thank you for contacting Mobil.

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 you have any additional questions, you may contact us at our E-mail address:

[email protected] or by phone at 1-800-ASKMOBIL.

XTech 98 MZ3 Imola Red II/Blk/Blk

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