Make sure you get the H.G. replaced before you hydralic a cylinder full water. Also I belive antifreeze is corrosive to the Cat.Converter.
Don't get ripped off if you don't do it yourself, 3.0 12 valve H.G. is not that hard to do.

dave h.
'89 Raider V6 5spd;Aisin Hubs;; Gen2 LS: frt. brakes, rear coils;U.C.arms;R.trailing arms;idler arm; rear LSD axle w.disc brakes ;2 battery system for Dog's fan; relocated ECU; custom bumpers;J.Baker receiver;Conferr roofrack; t-bar crank.