Originally Posted By: addyguy
Funny, I've always thought GTX, along with PYB, is one of the longer-lasting conventional oils - we've seen a few UOA's of 8-10K miles on it that were great.
I've got it in my car now, and I'll be changing it out after 2.5-3.5k miles - it's 'cleaning up' after a 21k run on conventional!
21k on dino!?!? Im shocked to hear that. Think you may need something a little stronger than GTX to clean up that disaster.