Sarah.Firey
New member
my original thread was( problems with Mobile 1 syn. oil.) I took my 08 road king back to the dealer and they replaced all the lifters. i questioned them about the use of Moblile 1 20-50 syn. oil. and they didn't think it had anything to do with the lifters wearing out. so whats up with lifters only lasting 25,000 to 33,000 mi. mine started making noise at 25,000. replaced @ 33,800 mi. started using mbl 1 syn @ 18,500mi. now i'm back to dino oil, afraid to go back to the syn oil.