I run Amsoil oil and filters in every thing I got , trans, diff, motors, power steering . Some I change every 10k (ones that see lots of dirt roads) some 25k with no motor failure . And most of my autos are hi mileage . Yes I do pay more but it is worth it.
My question to all this is what causes oil to get dirty?
Ok that has been my understanding. So now I'm guessing that the filter is going to be the focus. This is the reason I always thought the 3,000 mile oil change was important. Is it the fact that the syn oils protect the metal better ( less debris ) and the combustion isn't as big a factor as in older cars?The wear on the metal (there is still metal to metal contact) and combustion byproducts. A quality filter will keep your oil "clean" from debris. Black oil does not mean bad oil. You want your oil "dirty." If it's clean, something isn't doing its job.
Ok that has been my understanding. So now I'm guessing that the filter is going to be the focus. This is the reason I always thought the 3,000 mile oil change was important. Is it the fact that the syn oils protect the metal better ( less debris ) and the combustion isn't as big a factor as in older cars?
Go to Amsoil website and look at the comparison charts for different motor oils where they tested
i know one thing for a fact and that is...1 month ago i had the diff looked over at a 4x4 shop in the area also known as okauto and 4wheel drive the 1 thing the mechanic insisted on is i run amsoil syn gear oil in the diffs so i went with the suggestion of the mech. i mean 4x4's is all they do so i would say they known a thing or 2
I'm gonna be flushing it out and switching to synthetic:
Do you have to run a flush going to synthetic? If so how can the type of oil be determined if it's not marked? I bought a 2012 two months ago and there's no info or sticker about the type or brand of oil used.