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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