View Full Version : antifreeze & waterpumps

04-23-2010, 10:38 AM
jus' relating: just changed the w-pump on my PU {Toyota, 22R[alum head/iron block} after 130k..the bearing died, started dribbling.The replacement pump had a cast impeller but the origional{purchased new upon rebuild} had a formed steel thing.There was no decernable wear or corrosion on the origional impeller. I've always run 100% antifreeze and as i've spilled it or changed a hose etc. replaced antifreeze w/water. The only additive i've added was w-pump lubricant. The engine was overheated once {got to 250/260} but i've done all the maintence for the entire 130K...So far {130K} i can't see the diff.