OVERKILL
$100 Site Donor 2021
Originally Posted by JimSilverado
Looking up the bearing clearance of engines. The 0w oils now are all for fuel economy and emissions. I've run T6 15-40 in gas engines for years with phenomenal results and numbers from Blackstone. Run what you want
Wrong. 0w-xx is simply the Winter rating (hence kschachn's comment). My 6.4L spec's a 0w-40, my M5 spec'd an LL-01 oil, which could be 5w-30, 0w-40, 5w-40. Same engine also spec'd 10w-60.
OEM's are now spec'ing 0w-20 and 0w-16 (note the lower 2nd number, which is the hot viscosity) because oils with a better Winter rating tend to thicken less as ambient temperature drops, thus improving fuel economy during warm-up, which helps them with CAFE.
Looking up the bearing clearance of engines. The 0w oils now are all for fuel economy and emissions. I've run T6 15-40 in gas engines for years with phenomenal results and numbers from Blackstone. Run what you want
Wrong. 0w-xx is simply the Winter rating (hence kschachn's comment). My 6.4L spec's a 0w-40, my M5 spec'd an LL-01 oil, which could be 5w-30, 0w-40, 5w-40. Same engine also spec'd 10w-60.
OEM's are now spec'ing 0w-20 and 0w-16 (note the lower 2nd number, which is the hot viscosity) because oils with a better Winter rating tend to thicken less as ambient temperature drops, thus improving fuel economy during warm-up, which helps them with CAFE.