I am having intermittent lifter noise from my 2006 chevy with 5.3L V8 with about 210K miles on it.

Sometimes it is fine, other times you hear the clatter. I have an oil leak somewhere around the valve cover gaskets, but it's not a big leak. It seems like for about a week after an oil change, I don't get the clatter, and then it is intermittently back, even though it is not showing on the dipstick to be low on oil.

Any ideas to remedy the racket? I need to be able to limp this baby along for at least a few more years if possible.

Google 'Marvel Mystery Oil' for lifter noise. It fixed one of my buddies trucks. My uncle is a mechanic and he said it will fix about 80% of the chevys with the lifter issues.

Thanks....I'll let my fingers do the walking and check that out....

I used one of those off the shelf engine flushes at oil change time and then replaced one qt of oil with a qt of marvel. It did wonders for the noise almost immediately.

I use about 8 oz of marvel in the 07 yukon (151k miles) for lifter noise. It doesnt completely eliminate it, but drastically reduces it.

I also notice when I take it on long trips (3-4 hours driving at a time), it clears up for a few weeks before it comes back.

Maybe i need to do what AgMechanic says and just use a whole quart next oil change.

Does marvel not cause sludge buildup?

The sassafras and other craps in the marvel break down the sludge