i've got about 1500 miles on the oil and haven't had any problems. i thought i was getting a tick but i think i was getting alittle cheap gas that i got. i run mostly about 15 mile to work and 15 to 30 on the way home from work.(depends on how nice it is and where i end up on my way home). pretty much highway running about 60-70mph. oil still looks about new. i've got an oil cooler so it about never gets hotter than 210. it was warm outside today and i didn't get it get over 200. so so far everything is very good with the oil.