It's raining here and im lazy. im going to flush my RAD here soon before the warm months and towing season and i wanted to know if there is a petcock valve to drain it or do you simply have to remove the lower hose and make a mess? thanks! jiMMy

 

It's fixing to rain here also. I think it has one but I can't remember for sure. I changed my thermostat last year and I don't remember it NOT having one. I have the old style topdown radiator. If you have a crossflow it might be different.

Dang! You got me to wonderin so I went out and looked. Yes. Mine has a petcock. It's on the back bottom drivers side corner of the radiator.

Edwin

 

Same here.

Rained here last night.

 

super. so i wont be making a big mess. time to search for some good flush to cycle through the ol girl now and what freese to use... unless you guys want to chime in here. thanks, jiMMy

 

Use just about any brand and mix it 50-50 with water. I usually just mix it up beforehand and add some whenever it needs it.

 

I use the orange extended life coolant and add wix cool every year to keep my cooling system clean and clear never have had any cooling system corrossion
issues in any of my equipment

 

Radiator drain is on the bottom drivers side. Easy to get to, but splashes quite a bit. With a big drain pain, you can do it without spilling.

Cummins specifies a LOW SILICATE coolant formula. This is more important than brand. Don't buy anything that doesn't say LOW SILICATE on the label. Texaco makes a LS "for heavy duty diesel engines" that is available at most parts stores.

 

sweet, i think i will drain it, fill it, run it, drain it and fill again and i should be good for the warm months! thanks all. jiMMy

 

Just FYI, I just flushed mine and it took about 7 cycles to get the stuff to run clear. I would just fill it with water, drive it long enough to get up to temp so the thermostat opens, with the heat on, so everything mixes. Then drain it and do it again. It took at least 7 times before I would put the coolant in. It was tedious, but Im **** about stuff like that and wanted a clean starting point.