Quote:
Originally Posted by Leonardo629
No noticeable difference as far as engine noise goes, but oil does get up to the operating temp faster and no oil temp difference as far as street driving is concerned.
At $22.47 for a 5qt jug of M1 0w40 at Walmart, it's going to be hard for me to try anything else, unless the protection is otherwordly.
You think your S65 loves to rev? Get ready for a better experience once you switch to the 40wt oil.
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what difference did you feel performance wise?