Adding ATF to oil is an old trick many people have used for years. It can be harmful to an engine that's under load, because ATF only has a very low viscosity, that's light for bearings in an engine. You can add it and just let it idle for about 30 minutes before draining the oil. Or use a flushing oil or add a pint of kerosine before an oil change - all old tricks, all will "clean" the engine internals. However the best approach with modern engines is to use a good quality oil and that with regular oil and filter changes will virtually eliminate any engine getting "gunk-ed up."
I would also question what kind of an effect doing this could possibly have on a catalytic converter.
If it was so good pehaps the oil companies, with all their money and technical resources, would have incorporated ATF into motor oils!
IMO about as much long term use as sawdust in a gearbox or diff, or even a chocolate teapot
A true Rustyism
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Topic: OIL - Why Am I So Scared ?? (Read 4856 times)