Originally Posted By: CT8
Other than marketing claims what is the difference between the oils these days?
People say that a lot on here lately (which makes me wonder why they even bother with this site) but I beg to differ. Sure, if you've got an engine that you aren't stressing out too much and it's not forced induction or high performance, and you're doing 5k intervals and you only keep it for 100k before trading it in, then it probably doesn't matter what oil you use. In that case, any oil will get you to the finish line. But if you've got a high performance application, or a direct injected turbo, or you want to do 15,000 mile intervals, or you simply want to get 500,000 miles from your engine and still have the insides nice and clean, then you definitely need to look for something a little better than just any oil off the shelf. That's when you need to do your homework and make sure the oil you're using has the right certifications.