Quote:
Originally Posted by mig25
Oil is guaranteed for 15000 Miles, I do an oil change every 6 months or prior to winter and prior to summer.
If you do an oil change every 10.000 miles your oil will still be good since it is made for 15000 miles.
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Mobil 1 5W-30 is marginal at the top end of the viscosity range; the guys at BITOG say it's shear specs are really iffy to be classified as a 30wt.
Mobil 1 0W-40 is a *true* poly-alpha olefin (PAO) base stock oil. Not sure about the EP 5-30, but the 5W-30 Mobil 1 was proven to be a full synthetic blend with cheaper base stock. Still good stuff, but not the "best" by a long shot. Amsoil, Rotella and Redline make some better oils, just to name a few.