Quote Originally Posted by phatboislim
i know seals play a large roll in whether or not being able to run synthetic without burning oil. if the life of your seals aren't long...then better stick with 'what you know'
And I agree with that, but at 20k miles, if your seals are even starting to go bad, then I think there's another problem in the mix somewhere. I was just pointing out that while I accept his experience as the right answer, it just seems out of place, wanted a really fantastic explanation for it. Not neccessarily from him, but just in general. I know a lot about synthetic oils, but I've still never figured out why Aerio took to running synthetic just fine (and was much happier because of it) while other people tell me horror stories about how a synthetic oil caused their engine to die. It's all just speculation for me, FI = Synthetic just because of the temperature range.