There is no reason anything should need additives that aren't already in whatever you are using. Unless you are a tribologist and have the equipment to measure what effect adding said additive will have on the oil you are using and what the final mixture will produce you are likely doing more harm then good and may be canceling out other needed additives by adding something that isn't needed.
Stay far away from additives.
Future Electrical and Computer Engineer - University of Colorado - Boulder | Bringing Logic to JeepForum since 2010!
"Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid. — Albert Einstein