Assume the lifters we’re talking about can’t be adjusted and are on a single OHC engine.
I’ve heard that draining 1 quart of oil, adding 1 quart of ATF to the crankcase and then idling the engine for 10-15 minutes before doing a normal oil change is a good way to quiet lifter noise. Also heard that some people had success just using a regular motor flush product such as motor medic can work well too. Which of these methods is more effective?
As for oil additives (things to add after doing the flush and oil change) I’ve read good things about products such as rislone and lucas oil stabilizer. Was just seeing if anyone had experience with flush/additive products that worked well when it came to quieting down ticking lifters.
Obviously the best fix would be to replace the lifter(s) but multiple mechanics I’ve spoken to told me lifter noise isn’t a huge deal and engines can run tens of thousands of miles with lifter noise and they’re nothing but a slight annoyance due to the sound. So I figured why not see if anyone had product recommendations for quieting them down.