Quote:
Originally Posted by greasybenz
yikes! some of you guys are using a very thick 15w40 diesel oil in a gasser?
Sorry im not willing to do that. My S420 has mobil 1 5w30 and has been averaging 25mpg on the highway with 91 octane.
My diesel has Amsoil 15w40 full synthetic.
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yea i know, i find it equally as scary. But its recomended by Mercedes to use dino 15W40, so i continue to use it and that's all the car has recieved since it was brand new. BMW meanwhile i've heard suggests 10W40 for pre-99 car's but consider 15W40 just as good to use. I really blame mercedes for not putting enough effort to recommend/promote certain oils according to regions and the climate effects for the choice you make.