I think if you try 92 you will notice a difference (I did with my 380, and I
made sure it wasn't placebo by having someone else fill it up). If you don't
have any leaks with regular oil, go to synthetic. If you still don't have
any leaks HOORAY! With my 380, I had a small leak with regular oil, went to
synthetic, had a better running engine but made a total mess of my driveway
so I had no choice but to switch back (even blend made a mess of my
How about if you drive hard/fast? How about if you are running an older
engine which doesn't run as smoothly as it used to? If you know how to tell
good oil from bad oil,you would know that synthetic stays good longer. And
if you ever tried it in an old car you would notice your engine runs
smoother. Ever tried synthetic ATF in an old tranny that doesnt work right
(even if the old fluid was good)? You would notice that afterwards the
tranny works right. Also, cool a bottle of regular and a bottle of synthetic
to about 40F, now poor them out...which one is better? On a cold start in
winter your engine will thank you.
I completely disagree with Brett. Higher octane fuel in an engine that
doesn't need or use it is a total waste. Superior oil that keeps an
engine cleaner and running longer is never a waste.
That said, I am assuming the engine is currently in good shape and has
been maintained according to the schedule. If it's running poorly or
has problems, then Mobil one is no panacea.
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