BlkrwdT wrote:maxnix wrote:I use half M1 10W-30 and half M1 15W-50 in Texas summer.
Quote »1.) Wow , your mixing the weights? Goodluck to you.
2.) Back to topic. Like one said, use what manufactors recommend. I used to have an Acura TL-S and those are some pretty high performance engines and they recommend 5-20w. I was skepticle too but these Honda engines are made to rev for vtec engagements , but why such a low viscosity wieght? Maybe for bearing clearance factor, oil pumps, who knows but thats what they suggested to work with that particular engine.
1.) Mixing weights, not brands, so compatible additive packages. Not different brands! Mind boggling, ain't it?
2.) "they" would be the OEM who is only interested in getting through the warranty period and meeting their EPA projections. Hence, they specify a light weight oil. Not meant to warm your car to operating temperatures eihter, don't you know? One "wastes" gasoline by waiting for operating temperatures to be reached, but not doing wastes your engine long term. Who cares when it's out of warranty? They don't. It's your dime, not theirs when excessive wear makes its presence known by consuming more oil.
Also have a 1990 Legend fed steady diet of conventional with frequent changes. Twice to three times the miles (have 3 different Q45), but not nearly as pretty in the oil galleys as the M1 fed VH engines.