Hey Scotty, My Racing Civic is currently at 73K miles and at every cold start at the morning before working, I hear what I think is a piston slap for 10 - 15 seconds and the it’s goes away. Now it’s almost at its next oil change. But when it’s hits 3k after the last oil change, the oil looks dark already like it need another oil change and I only use full synthetic oil like Quaker state, Mobil 1, Valveoline, Fram, Etc. So I’m gonna use liqui Moly engine flush before when I do my next oil change. I’ll like to know is there any other kind of remedy to silent it or I should do more than an engine flush. Thanks
when it’s hits 3k after the last oil change, the oil looks dark
Normal. Dirt should be in your oil, not the engine , right?
The oil is doing it's job, don't worry about it. If you want to get to the absolute bottom of it, send it for analysis.
@imperator I still have the old oil with the bottle they sent me from my last oil change and I haven’t yet sent it
Piston slap is caused by engine wear or manufacturing defects. A snake oil "engine flush" will not fix it.
https://www.carparts.com/blog/what-is-piston-slap-and-how-can-you-get-rid-of-it/
