2000 Chevy Silverado 5.3 liter
This could be a lifter sticking or draining down. I would recommend adding some additive to your oil (oil treatment) to see if will clear it up. It will go away once the oil pressure comes up and the lifter is up to pressure.
Thank you can you recommend an oil treatment?
Sticky lifters. There are oil additives you can put into the oil when changing the oil is best, that may help loosen up any sludge build up. Just go to your local parts store to see what they would recommend. Lucas products are good.
Marvel mystery oil is awesome on a ticking lifter.
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