80q coolant flush/refill worry

[Edward R. Wendell IV]

> quote:
> I have learned to mix up a 50/50 brew before adding it to a system, 
> Megan.
> You never get it all out.  I just keep the left overs on hand for 
> topping up.
>
But that is precisely the problem. As there is always some plain water 
left in the system after flushing, filling the system with a 50/50 mix 
will end up with a weaker solution. I use the technique of dividing the 
official coolant system capacity by two and adding that much pure 
coolant. I then top off the system with water. My summer car (MR2) has 
the engine in the back and the radiator up front. Rest assured, I know 
a thing or two about coolant changes as it's about a four hour process.

Roy Wendell
Clarksburg WV USA
86, 87 5kcstq
87 MR2 times 2
Three turbos, two quattros, too much fun