What is the issue with Mobil 1 0w40? I use it in my 1995 BMW 525i with no apparent problems. However, I am always looking for better oil! TIAquote:
have done a lot of searching and kind found no correlation to the specs listed for Syntec 5w-40 and those of any 5w-40 sold in any other country as a Castrol oil. I might just give it a shot out of curisosity. I am less than happy with the M1 0w-40.
There is no problem with M1 0w40. It is the wrong grade of oil for my car, however, because I think I need to run an oil with a higher HTHS than the factory 5w-20 on track, I use it. I burn almost a qt in 3000 miles and a 200 mile track event. This is VERY high for a Ford Zetec which is reknowned for lack of oil consumption. I have had zero consumption when I used M1 0w-20 or 5w-30 under the same conditions. I am switching oils mostly in the hope that my relentless beating of the engine has not injured it and I am taking a look at the BC 5w-40. An oil change is much simpler than a re-ring and new bearings!quote:
Originally posted by Russell:
What is the issue with Mobil 1 0w40? I use it in my 1995 BMW 525i with no apparent problems. However, I am always looking for better oil! TIAquote:
have done a lot of searching and kind found no correlation to the specs listed for Syntec 5w-40 and those of any 5w-40 sold in any other country as a Castrol oil. I might just give it a shot out of curisosity. I am less than happy with the M1 0w-40.
Okay ... fair enough ... however for a GIII oil, they are over-priced.quote:
Originally posted by pscholte:
Alex,
I don't believe a lot of people on this board (me included) give sufficient credit to the chemical/compositional magic which can be worked on a Group III-based oil. I think we vastly underestimate some of them.