My machine shop guy, who just happens to be an old hot rodder, told me that hot tanking is really the best way to go. They are now very restricted by the good ole EPA as to what chemicals they can use, but even with less effective stuff, hot tank is the way to go. My big-inch ('76) Cadillac was a clogged up rusty mess when I took it to him and it was absolutely clean when I got it back.

Incidentally, if anybody in the Fort Worth area would like his name and address, send me a PM and I'll be glad to give it to you.

Jim