I have been told that the only benefit from synthetic is if you start using
it on a low mileage vehicle. I think 'dino' oil has a cumulative buildup
effect that synthetic doesn't (not as much anyway) so using on a high
mileage vehicle may not result in any greater performance.
I always thought the real reason to use synthetic was for the LIFE of the
engine, not performance.
0.02
<shanec@spie.org> wrote in message
news:E5DA1AF314C7D2119D5E0008C75D85A903BB9C77@XENA...
> Would switching to synthetic oil on an engine that has 115,000 miles on it
> do any good? I've been using Pennzoil 10w30 for the past 6 years I've
owned
> my 92 CC 3.9l 4x4 auto and haven't had a single problem. However, I would
> like to get that last little horsepower out of the engine. Would the left
> over oil and oil deposits in the engine cause any problems with synthetic?
> Thanks in advance!
>
> Shane C.
>
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