Quote:
Originally Posted by flmont
I always thought that synthetic was a super oil and you could NOT return to the old stuff .
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There is no incompatibility between conventional oil and synthetic oil - if there was, you couldn't have synthetic blends - but why would you want to go to non-synthetic oil when synthetic oil is definitely better?
And, about blends - I have never seen any blend that says what % is synthetic - 2 drops per quart?
My personal opinion is you'd do better to change oil every 4,000 miles with synthetic oil, rather than 'dino' oil every 3,000 - to keep the cost the same.