Jay, spend the money on a good synthetic. Search the posts here. There is one I recall that linked to a site that had some research about this subject. Basically these additives are a waste of $$$...
Oops, I found the link, here it is.. http://www.bmwe30.net/tech/motor_oils.html
2000 Dodge Grand Caravan SE
[This message has been edited by jeffsr (edited 08-23-2000).]