Coolant System: Drain, flush, re-fill faq?
I got a '93 3.5 L ES, never flushed the coolant system since I've bought it in '98. My ignorance has caused me to just check the level and fill it from time to time. The engine has never had any over-heating issues. Always runs normal temp.
I have a Haynes manual and the procedure seems pretty basic. Any suggestions and tips? It says there are 2 drain plugs on the engine block. There is no radiator cap, so I assume you fill it in the coolant overfill tank.
The next oil change I was planning on draining, flushing, and re-filling with a 50 / 50 mixture of distilled water and coolant.
Currently it is 100% coolant, no water. I've been told 50/50 it the best option.
Last edited by mf2004champ; 03-16-2007 at 04:33 PM.