I am currently using Kendall semi synthetic 5w20 (Firestone customer). My OCI's are in the neighborhood of 3000-4000 miles due to warranty reasons. Hyundai specs 3700 for 'severe' schedule. I do mostly city driving, but do let my car stretch its legs regularly on the highway. My split is about 65 city / 35 hwy. My last 2 UOA's came back pretty good using the same oil. So the question is, should I consider switching to a full synthetic, such as Amsoil OE 5w20, M1 5w20 or similar if I'm planning to keep the same OCI until the car is about out of warranty? I was going to switch to TGMO 0w20, but Hyundai will not honor warranty service for lubrication if they see that oil was used
here is the link to the latest UOA:
http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=3185982
here is the link to the latest UOA:
http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=3185982