saboken wrote:
5.3 has a light tap when cold I read they tend to have a piston slap....what I am hearing is a week lifter, because when I change the oil (I only use either Mobile 1 or Lucas 5/30) the tap is gone for the first few days after that when it's cold I hear it for about 10-30 seconds an it's gone.
If the noise decreases once it's warm I'm not sure it's a huge problem. It might be the lifter has some sludge causing reduced oil flow or sticking when cold. Maybe a treatment of
Seafoam in the crankcase oil will eliminate those deposits and improve flow?
