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Antifreeze for a Deuce

wsucougarx

Well-known member
6,951
67
48
Location
Washington State
I do know you want to use a low/No silicate antifreeze. I get mine from a truck supply outfit. The Walmart stuff isn't going to cut it or so I have been told.
 

glcaines

Well-known member
3,913
2,588
113
Location
Hiawassee, Georgia
I've heard that the low silicate antifreeze is better, but I run plain old ethylene glycol based antifreeze in mine and have never had an issue. Remember, these trucks have been in use by the military for decades, long before low silicate antifreeze was around. When I was in the army in the early 70s, it was plain old ethylene glycol based antifreeze, because that was all there was. I work for the company that previously manufactured Prestone brand. A large number of store-brand ethylene glycol based antifreeze products came right out of the same tanks that filled the Prestone jugs. I currently have Fred's brand antifreeze in both my deuces at a 50% mix. As important as the ethylene glycol content is the presence of good anti-foaming agents and anti-corrosion agents.
 

hoop

Member
617
14
18
Location
va
I use Walmart antifreeze. Being that they are dry sleeve cylinders. I have not added any anti-foaming and I do check it frequently and have never had any excess bubbles in the rad.
 
226
2
18
Location
Felton, DE
Just flushed my system, filled it up with a 50/50 mix of Walmart (well case from sams) antifreeze. no foaming issue that i can see. its gotta be better than that rusty crap that was in there before.
 

Bill W

Well-known member
1,985
45
48
Location
Brooks,Ga
Its not the antifreeze you need to be concerned so much about, its the other half of the mix ( Water ) most people use tap water which is loaded with silicates, you should be using distilled water to your antfreeze mix. I also add NAPA KOOL which is a SCA ( supplimental coolant additive ) most inline dry sleeve diesels don't require it but I put it in anyway as it does prevent cavitation burns ( ie pinholes in the aluminum oil cooler cover that you see so much of on the LTD's ) and I swear it makes my deuce run cooler.
 
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197thhhc

Active member
1,067
15
38
Location
Williamsburg, OHIO
Regular glycol antifreeze is fine. Bill W is correct you should always use distilled water (you can get it at most grocery stores.) The one thing we always use in all heavy duty and performance engines we deal with is Water Wetter. It is an additive that prevents rust, bubbles, corrosion and it breaks down the surface tension of water. You can get it at most auto stores. We use 2 small bottles in a deuce.

Red Line Synthetic Oil - WaterWetter® Coolant Additives - WaterWetter®
 
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