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-   -   Any way of identifying synthetic oil? (http://forums.pelicanparts.com/porsche-911-technical-forum/187258-any-way-identifying-synthetic-oil.html)

jstein 10-14-2004 06:19 PM
Any way of identifying synthetic oil?
 
I would like to 'top' up my recently acquired '79 911SC before I put her away for the winter. The last shop that performed an oil change (~500 miles ago) - arranged by the PO - put one of those window stickers on the front glass identifying the viscosity of the oil as 15W-40.

My question; is there any way of knowing if the oil currently in the engine is synthetic or not? I can't imagine it would be a good thing to mix.

Por_sha911 10-14-2004 06:30 PM
Call the shop?

anthony 10-14-2004 06:35 PM
Quote:
I can't imagine it would be a good thing to mix.
Regular and synthetic oil are fully compatible. You can mix and match. But I agree that calling the shop would be the quickest way to find out which oil is in the car.

mmm 10-14-2004 08:04 PM
No problem mixing synthetic and conventional oil. They mix just fine.


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