Posted by: Chuck W.
« on: April 17, 2020, 06:14:44 PM »Quote
Was this done at the factory?Yes, Glyptal 1201 paint, seals castings and improves oil flow. Very commonly found on the inside of castings such as engine blocks, transmission cases, differential housings, etc. We used it to reseal diesel engine blocks, steering clutch cases, etc. when I worked for Caterpillar.
https://www.eastwood.com/glyptal-red-brush-on-1-qt.html