MY VL 6cyl always had noisy lifters, oil changes didnt help, nulon lifter quietner did work but not for long
valvoline engine flush did quieten them and after 6 months thet are still quiet
we found engine flush strips the paint off the inside of the sump and cloggs the oil pick up.
Nobody wants to play with me
thats right Jatsvl i remember that..
just regular oil changes keeps em quiet i found... i got no problems...
if not take them out and clean them, post on Calaisturbo.com on how to