X 1000!Your friends don't know jack sh!t about oil!
Syn will hold up way better in the heat.
Harley has their proving grounds in Yucca AZ.want hot run through death valley during peak temps 120 + and see if the oil holds up .
yes it would be. maybe we could coax somebody to get that info hummmmmmm:tinfoilhat:Harley has their proving grounds in Yucca AZ.
Be interesting to see what oil they actually use during the torture tests, and and oil analysis of the oil following those torture tests.
first time i rode my 96tc road king, i wheeled her out of garage and started her up. man i couldnt believe all the upperend noise. turned my hearing aids off, that baby has been smooth and quiet ever since. i love my quiet harley. tommy:biking:When I switched to synthetic 2 weeks ago, the top end clatter went away.