BigSilverHD
SDD Junior Member
Same here I have been running the FS2500 for about 4 years now and it does awesome. i let the oil go to 10k and it still looks almost brand new......with amsoil full synthetic of course. FYI on the FS2500 if the filter gets too dirty it will cause the truck to feel like the HPOP is going bad....I lost track of when i had changed it and i think it went about 12k to 15k on that oil change. I also like that you can send in a sample to them and will do an analysis of your oil.
