My 98 Tahoe makes valve lifter noise when I do a cold start like overnight. It is persistent but not extremely loud. Thing is, it goes away after about one minute of idling, then doesn’t come back. How bad is this? Should it be fixed, or ignored for now?

Chevy 350 valve lifter noise

melott December 23, 2007, 2:54pm 3

I’ve been using synthetic 5w30, which is the weight that it calls for. I’ve been tempted to go to the 0w30 in the winter, to get that lifter lubed quicker.