Replacing Ticking Hydraulic Lifters

Crower Cam Savers.

First I would pour in a quart of Lucus oil treatment an see if that helps. It fixed the tic in my 99 5.9 Durango.
It's all in the oil. lol
I never had a problem using 20w/50w with hyd lifters. 10w/40w during winter.
A good zinc fortified oil. never a flat cam, ticking lifter or wasted bearing.