I stumbled across mention of this product a little while ago. I had never heard of it but it seems to make sense- by breaking down the surface tension of coolant and getting rid of any air bubbles in the coolant it would reduce engine temps and make the coolant more effective (more surface contact of the liquid with the radiator tubes). They claim it can reduce engine temps by up to 20 degrees. That seems like a lot but I guess its possible (not being an expert on coolant and radiator technology! ha!). They also have a diesel version. Figured I would pass it along....
http://www.redlineoil.com/Products.aspx?pcid=10
