Going to change out coolant in 03.

[T.R.P.]

Planning on running Shell Rotella ELC concentrate 3.5 gallons, and 3.5 gallons of distilled water.

As for the flush, I drain the radiator. Where are the plugs on the back of the block? I think I located one, but it is an allen wrench type bolt, where is the one on the passenger side?

Also, after I drain all the coolant, do I just fill it up with water and run it until the thermostat opens or just leave the drain plugs out and run water through the system with a hose?

Thanks guys.

[amdriven2liv]

The other one is above the starter. tough to get to. I would get 2 quarts of VC-9 and get it good and clean.

This link might help. I would pull the T stat. I didn't when I did mine. saves a lot of time:

Coolant Change 101 - Ford Truck Enthusiasts Forums