Coolant change?

[blue72]

Is there anyway to get most of the old coolant out of the system. I want to change my 7.3 over to ELC coolant but all I can find around me is 50/50 mix. Is it possible to get the old stuff out?

Also, whats the deal with the hotter 203* t-stat. Are you guys seeing better gas mileage with the hotter stat?

[Dietoremain]

pull the plugs on the block as well, lil hex plugs, should be able to find them, i forget what size tho.

[blue72]

Will that drain most of it? Thanks!

[blue72]

Can anyone confirm this? If I pull the plugs on the block will it drain all the coolant?

Any info on the t-stat? Thanks.

[86lxnotch]

i drained the rad, then pulled the lower hose. after that i pulled the the plug on either side of the block(just a 1/4'' ratchet head). drained as much as i could filled with water and repeated twice to get it all out

[blue72]

Originally Posted by 86lxnotch

i drained the rad, then pulled the lower hose. after that i pulled the the plug on either side of the block(just a 1/4'' ratchet head). drained as much as i could filled with water and repeated twice to get it all out

How much fluid did you get out with this method?

[jesilvas]

I drained the radiator and flushed the heater lines with the cheap little prestone kit on the heater core lines. Then used DISTILLED water, filled it up, ran it w/no thermostat. Drained just radiator. Did this with 20 or so gallons of distilled water. Then after the final drain I filled up four gallons of concentrate ELC, then topped off with distilled which gives you a 50/50 mix.
I run the 203* thermo. Maybe a big better mileage, probably not that much. 203* is the IH temp for the T444E not the Ford 198*. It's a big smoother once at full operating temp. I like it. Also did a coolant filter modeled after DieselSite's.

[86lxnotch]

i dunno didnt really pay attention the first time. i just did it multiple times(hence calling it a flush) until i got clear water out of it, let it sit and drain whatever it could for about a half hour then plugged it all back up and filled it with CAT ELC coolant and called it a day

[TheOne]

You can use this method. This way it gets all the old coolant out of the heater core as well.

v=tpYCfqcNEh4

6.0 SYSTEM FLUSH - YouTube

6.0 SYSTEM FLUSH - YouTube

[GetSmoked]

The video above is the method I use.