Originally Posted by
XtremeJumpin16
This is a question that almost everybody asks about. Can WD-40 be used as an after run oil since no after run is sold in my area? What about marvel mystery oil? This is a question I always wonder about and nobody has an answer to it. Which one is better?
DO NOT, and I repeat DO NOT use WD-40 as ARO, MMO is great but expensive, Mobil 1 Full synthetic 10w-30 engine oil would be THE VERY BEST and CHEAPEST ARO you can get, 1 quart will last you a lifetime and since it is fully synthetic, means no dino fat on it, it will never harm your plug, o rings or any silicone inside for that matter...
Try Mobil 1 full syn on your car and you'll quickly realize why it's the best oil out there.