I've been reading some old threads and I read one where Amsoil says its oil can go 25,000 miles before a change is due (in fact, I think they give an engine warranty to that effect). I've also read where LubeControl says using LC20 will prolong your oil (dino oil) to 10,000 miles which is double the normal life expectancy of dino. BTW, I use LC20 and FP60 and think they are indeed very good products. So, extending this out, does it make sense that using Amsoil with LC20 could get me 50,000 mile OCIs? I have a new Honda truck and of course I won't do this because I want to stay within the framework of Honda's warranty so it is a what-if kind of question. I put a max of 10,000 miles a year on my trucks and trade every 5 years. The most miles I've ever had on at trade-in time was 58,000. I could I suppose change oil once, use LC20 as suggested along with the Amsoil, do a periodic UOA once or twice and do nothing more than top-off when needed (although I might want to change the filter once or twice). Maybe we are coming to this and it just may not be as far fetched as one might think.