Originally Posted by sgoldste01
I've had no noticeable loss with the (much less expensive) Amsoil OE. What's your oil change interval? Unless it's quite a lot longer than mine (5k), it might be worth "downgrading" to the OE oil.
Not sure yet, going to get a UOA don't in another 4k miles and figure out from there.
On paper xl and oe are very very similar. I might try oe next change, will depend on the UOA