My 1997 Ford F-150, 4.6L with automatic, is suffering from the slip join "clunk" at stops/starts.
My research has found this is a common problem when the output shaft splines get dried out. It causes the slip joint to bind and "thump" or "clunk" when it releases.
Can anyone provide reference to why the PTFE is recommended vs.using standard high temp grease? Would using the high temp grease cause issues/damage?