Hippo, I am just curious as to why H/D does not sale a teflon treated oil. I have read some posts with your comments concerning synthetic oil but I believe in a regular serviced oil change so I am not sure that synthetic oils are worth the money if you are going to drain them at regular service intervals. However, I have used teflon treated lubicants in other applications and have attained long engine lifes. Why aren't teflon treated lubricants available? Are they a bad idea for HAWGS? Or is it because it is considered the best approach is to do a rebuild at 100,000; or just perhaps that most riders end up with major engine mods before the engine can reach its end of service life?