tici

iTrader: (1)

This is about a 98 Trans Am, 10 years old, 90'000 miles.
I never replaced the coolant, never had a leak.

Last weekend I installed a LT1 cooler (they are 40% thicker than those installed in LS1 cars), flushed the system and filled it up with a local brand fluid.
The fluid is for aluminum engines, it's ethylene glycol based and gives the same freezing protection than the GM product.

Result: now the water pump is leaking from the shaft seal.

Coincidence?
The seal doesn't like the new fluid?
Flushing the system also removed a healthy layer of dirt that helped the pump to be sealed?


Thanks for any help

Stefano

tici

iTrader: (1)

t t t

Z28Red01

How long did u leave fluid out of the pump? My dad flushed his system and left it dry for 2 days and the seals shrank and cracked.

tici

iTrader: (1)

Maybe 2 hours.
It is possible that when I refilled the system the pump ran dry for a short period of time, just what it takes for the system to be completely filled.