PS. Thanks for the info, Kreb. I'll check it out. Don't know that I could justify the Flowkool at $97+, but I thank Fornesto for the link. Hopefully, it won't come to that or a new rad.
'87 Grand Wagoneer, 3" Rough Country lift, 31" BFG's, K&N filter, Alpine/Bose stereo, TFI ignition upgrade, PowerTrax No Slip locker -rear, factory brushguard, "Genius has limitations, Stupidity doesn't"