I asked this last year and got an answer that "it just does" but again it doesn't seem to make sense to me, so here goes again-
5 L merc efi w/ B3- drained both sides mani and both sides of block, and engine water pump and lastly the plug on he bottom of the fuel cooler. Question- how does the fuel cooler drain plug, drain the entire line ( the line goes from the top of therm housing down to and through the fuel cooler up and through the ps cooler then down and into the rwp? It doesn't seem like it would drain the side from the ps cooler down and to the rwp. Therefore, if I fill that line from the therm housing w/ a/f wouldn't it be quite diluted? I guess I'll have to check the specific gravity- or just trust- after all, it worked last year.
5 L merc efi w/ B3- drained both sides mani and both sides of block, and engine water pump and lastly the plug on he bottom of the fuel cooler. Question- how does the fuel cooler drain plug, drain the entire line ( the line goes from the top of therm housing down to and through the fuel cooler up and through the ps cooler then down and into the rwp? It doesn't seem like it would drain the side from the ps cooler down and to the rwp. Therefore, if I fill that line from the therm housing w/ a/f wouldn't it be quite diluted? I guess I'll have to check the specific gravity- or just trust- after all, it worked last year.