Thread: So I went With Mobil 1 5w40

Quote: Originally Posted by FCPGroton As long as you change your oil every 7.5K or so, I don't see why you would have an issue running the 5w-40. I would really like to know what makes the 0w-40 pass BMW's test, but the 5w-40 does not. Talking out of my ass I'm guessing that the ESP 5w-40 is too heavy whereas the 0w-40 really performs like a 30w. I'm also going to guess that the ESP 5w-30 is probably very similar to the...

Quote: Originally Posted by Socom Mobil_1_ESP_Formula_5W-30 meets BMW's LL-04 spec (used in the 335d) and is a higher spec oil for diesel (MB, VW) than your 5w-40 for heavy equipment. So why not use this instead of the 5w-40 for heavy equipment? I'm thinking your 5w-40 might be too heavy (Rumors have always been that the LL01 0w-40 actually performs more like a 30w oil so it's not a valid comparison). Time for a visit to...

G'Day Mr5, Yea, you'll be right - I run Royal Purple 5w30 and also have the oil lab tested at service time and all is good.

i love mobil, try wal mart, they have 5L specials

Quote: Originally Posted by Fritzables G'Day Mr5, Yea, you'll be right - I run Royal Purple 5w30 and also have the oil lab tested at service time and all is good. +1. 0w40 & 5w30 RP for me ........... 7500K oil change intervals.

As long as you change your oil every 7.5K or so, I don't see why you would have an issue running the 5w-40. I would really like to know what makes the 0w-40 pass BMW's test, but the 5w-40 does not.