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heavyhaulerss · Joined: 29 Jan 2007 Posts: 545 Location: north alabama

after fixing a small leak in a hose & replaceing lost antifreeze the next day i checked water tank in back of truck. water was right at top. figured a lil too much so i drained some out of drain on radiator. the truck was at operating temp & the water in tank was hot. could put my finger in & not get burned. it did not bubble out when i took cap off, but it was hot. but.. the water that came out of rad was not even luke warm. more like room temp. i just came off interstate from a 100 mi run & did this soon as i parked, no letting cool down. so my question is... is it normal to have such opposite temps' at rad & water tank ? t.y.

bob h · Joined: 15 Oct 2006 Posts: 664 Location: Nb

heavyhaulerss wrote: after fixing a small leak in a hose & replaceing lost antifreeze the next day i checked water tank in back of truck. water was right at top. figured a lil too much so i drained some out of drain on radiator. the truck was at operating temp & the water in tank was hot. could put my finger in & not get burned. it did not bubble out when i took cap off, but it was hot. but.. the water that came out of rad was not even luke warm. more like room temp. i just came off interstate from a 100 mi run & did this soon as i parked, no letting cool down. so my question is... is it normal to have such opposite temps' at rad & water tank ? t.y.

No, when you removed the rad cap from a cooling system at operating temp, the coolant should have been under pressure.

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