Originally Posted by
dtinker
I think I am just going to drain and flush with engine running so T-stat opens up, etc. I noticed that the pics show changing out the t-stat and gasket. I don't think I will do that unless some really good reason. Car does not get hot, t-stat works fine, no leaks. I assume this is changed more for inspection than for anything else. I am going to buy Zerex GO-5, HOW MUCH SHOULD I buy? I think I will buy the 50-50 premixed, does it take 3 gals?
The total capacity of the cooling system is 3 gal but you will only be adding 2 gallons to your reservoir because if you didn't drain your engine block (most don't) after flushing then you already have approximately 1 gal of whatever water you used during the flush to start with in the cooling system. Therefore, you shouldn't add 50/50 premix because it will be further diluted (to 33/67) by the water in the engine block.
Just get 2 gallons of the full strength G-05 and add 1.5 gal of it to the reservoir and then top off with 0.5 gal distilled water.