There are two probs with using tranny fluid in motor oil:
1. If the engine has a bunch of sludge from running non-detergent oil, the tranny fluid could break some of that loose and clog the pickup screen or get drawn into the oiling system.
2: Rubber & some neoprenes and vinyls expand when chemicals attack them. If a rubber seal is expanding due to chemical contamination, its failing.
While tranny fluid is an excellent lubricant, it belongs in the transmission.
good luck
chip
