Quote:
Originally Posted by shawnhayes
It's actually FRIGHTENINGLY different 0w-30 to 5W-30 for many manufacturer's oils. It's not like the olden days. HTHS ratings, catalytic converter safety, etc. etc. etc. Basically, unless it meets the BMW ratings system, you're just guessing. You might guess right, but you might not. Ever since I spent YEARS finding the PERFECT oil for the GT-R under track day conditions, and discovered that basically after eons of research and oil analyses - I was just barely beating the recommended Mobil-1 0W-40 from the factory. I have followed OEM recommendations for oil ever since. You're perfectly safe getting the stock oil unless you've modified the engine a lot. It just is the engineers have done a good job from the factory.
Shawn
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I would use bmw oil if they didn't upcharge the effing hell out of it like everything else. Makes no sense. BMW branded coils for my N63TU were $50 more than the exact same ones from BOSCH that weren't sold through BMW...just dumb.
I used to live and die by Mobil 1 0w-40 on my amg. Now i use LiquiMoly 5w-30 and 0w-30 on both X5 and M5 (in between dealer changes).
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'07 Yamaha R1 (sold)
'06 C55 AMG (sold)
‘?20 M5, MP Carbon Pro Spoiler, MP Carbon Diffuser, MP Black grille and gills, MP Carbon Mirrors, CF side sills, 789M w/ Ti studs, eventuri, Dinan X pipe
'14 X5 50i (wife’s now)