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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. |
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Make Bruins Great Again
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Call the shop?
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-------------------------------------- Joe See Porsche run. Run, Porsche, Run: `87 911 Carrera |
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Registered
Join Date: Jan 2002
Location: SF Bay Area, CA
Posts: 1,861
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Quote:
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Registered
Join Date: May 2003
Location: Seattle (Bellevue), Washington
Posts: 428
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No problem mixing synthetic and conventional oil. They mix just fine.
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