radiator fluid change

I want to change the radiator fluid for the winter in my 01.
anyone know how much new fluid i'll need? and I was thinking of flushing it out a bit by putting the hose in and letting it run through for a few mins, is that a good idea? haha.

I looked in my manual but found a few different numbers

thanks in advance for any help.

 

I don't believe it'll be a true flush by just running a hose through it as there is still coolant that will be circulated through the engine.
You'd have to do several fill's and drains to be completely free of old fluid/debris

 

i just got doing mine, it took about 1.2 gallons and i filled my reserve about half way too. if you wanna flush out your radiator you can pick up a flushing kit at must auto part places for under $7.00. but if your just going to flush it out with just a hose drain it first and turn the truck on for like 15-30 seconds with the hose on to flush out the engine too.

 

yea i figured those bottles of flush were a gimmick. has anyone tried them? it's not gona hurt anything to run it with just water in it?

 

ya i tried the flush it worked just fine. its ok to run water though just dont let your truck warm up, thats why i said just a few seconds. ok bud let me know how it works out.

 

I'm going to bite on this - why not let the truck warm up?