I've just changed the water pump on my '94 S10 4.3L Z 2WD. After flushing I filled as far as I could with the engine off. I ran the truck until I got a nudge up on the temp gauge, then added more. I ran until the heater was working full blast and added more. It's "full" with about 7-8 quarts of 50/50. The stats read 12 quart capacity. I'm writing this while it cools (it's 40F outside) and I'll check and add some more- but what's going on with my missing capacity?
coolant capacity
Dec 17, 2007
2 Replies
Coolant inside the motor?
Well unless you pulled the block drains and drained the heater core and radiator completely you still have water/coolant in the engine after the flush. If you flushed with only water you will need to use a hydrometer to see what your current protection level is. You will probably need to add some straight coolant to end up with a complete 50/50 mix.
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