i have 2015 kenworth w900l the top stack mounts squeak all the time tried fluid film on it , white grease and the put new mounts in it after cleaning every thing of still squeaks. Did any body else have any sucuss elimateing this problem
I've had that problem with a 2005 and my 2007, WD40 has always stopped it for awhile, I put the new plastic bushings in this truck and haven't had a problem for a year now. Make sure that your stacks are lined up properly, if you have to use force to get the bolt to drop thru the sleeve they will never stop squeaking.
I put new bushings in mine several weeks ago and was really pleased they are much better than the old style. Sort of like a plastic ball socket works great.