I just installed the sierra coolant to absorb any excess water and old coolant.

However I tried to get some old coolant out of the heater core. By removing the bottom firewall heater
core hose. Only a little came out?

Just how much coolant does that heater core hold?

Should I worry about that excess coolant in there. I plan to drain the Sierra again and Fill with the Evans.

What will happen to the Evans if there is some old water or coolant in there?

jc

 

old water or coolant will contaminate the evans...they say to get the coolant out of the heater core you have to run the car with straight sierra for 15 minutes or so with the heater on full blast. I think that's right. Anyway pineapple racing has a write up on how to do it.

 

What happens when you run the stock filler cap?
Without removing the rubber piece inside?

thanks again
jc.