mbw479 Posted September 30, 2019 I have installed a couple piston with a moly coated skirt (see pic), I have dropped the oil to check it after .5hr run time and noticed some black specs in there. I am assuming this is some of the moly coating of the skirt, it’s not a lot and I’m not too concerned. Just thought I would check and see if anyone has some experience with these pistons, and is this normal? Thanks Share this post Link to post Share on other sites
highmarker Posted October 5, 2019 Most coating are considered sacrificial. Share this post Link to post Share on other sites
