Here's one. I read it and would be concerned about using Prestone.

http://www.gohtsn.com/printer_321.shtml

 

Does the Cummins DCA additive and test strips work with the Zerex G 05? Craig

 

Does that anti freeze approved for use in a diesel engine and meet Cummins spec's? The last time I looked at Dex Cool, it was not Cummins approved. BTW the Mopar approval is just for cars not diesel engines. Also unless the anti freeze you buy is pre-mixed, make sure you only use distilled water in your radiator and not tap water per Cummins requirements.

 

The label states that it is compatible with Mopar HOAT and meets both of the Mopar specs. It is a 50/50 pre-mix and I have been using it for a few years to top off the system when needed. No problems so far.

 

My owners manual states to use only HOAT anti freeze, not HOAT compatible. It states that non HOAT coolant may result in engine damage and decreased corrosion protection. Also if you use non HOAT coolant in an emergency then it should be replaced with HOAT coolant ASAP. I also did not see in your photo where it states that the coolant was good for 5 years or 100,000 miles like the coolant that comes from the factory. My self I will not put any anti freeze in to my radiator unless its rated for 5/100 and it is 100% HOAT approved for use in a Cummins engine.

JMHO

 

Any heavy truck dealer will have it on the shelf.

Tim

 

NAPA has the Zerex/HOAT in my area, but it is like $17-$18/Gallon. Is there anyplace to buy it online?

 

"BTW the Mopar approval is just for cars not diesel engines. "

Ah ha. I knew it wasn't right for the CTD. I told the parts guy three times and he still argured with me when I should him the owners manual. It dosn't say anything HOAT related on the Mopar jug. That explains it. Its green, they wouldn't take it back, I will use it in my 98 wrangler.

Thank you DBLR ! I am hoping Napa has the zerex.

 

The HOAT coolant prevents cavation which can eat through the outside of the cylinder walls. Cavation can happen with a diesel under load. The cylinder expands with each power stroke and then contracts so fast that the coolant cannot fill the void left. The coolant then fills the void with such force that it slowly eats away at the cylinder wall.

If you mix HOAT with DEX it can gel resulting in cooling failure.

I have changed out my coolant with the Zerex GL-5 and once mixed with distilled water it is almost clear. I would like to have the red dye in it to make it easier to see in the overflow bottle and to see leaks. Anyone know where I can get some dye? Perhaps I should have used one gallon of MOPAR which has the dye, a little dye will go along way.

 

That stuff is hard to see.

I've taken to shining a flashlight down the overflow bottle, which makes it easy to see the level.

 

Huh? Are you saying that every 1st, 2nd, and 3rd gen cummins owner on this board will have a cooling failure unless they are running HOAT coolant?

 

According to vavloline's chart on antifreeze, Dodge switched to HOAT in 2001.

I also read somewhere on there that the HOAT chemistry provides anticorrosion properties longer than conventional chemistry, which I presume is why the green stuff generally gets changed every 2 years, where vehicles that use HOAT generally recommend every 5 years....

 

No, I am not saying that. Normally only the 3rd gens with the higher output can create cavatation. Not everyone will create cavatation as not everyone puts the pedal to the metal and keeps it there for a time.

Just best to be safe and use the correct coolant and don't mix it.

 

Looks like Zerex G-05 is the one to go after. I finally found it at Orchard Supply after striking out at the auto part stores.

 

My quest Saturday was to get a gallon of HOAT and I discovered only NAPA carried it! This is the "motorCity", Detroit! Murray's, Advance Auto, AutoZone, Wally World, and Indepdants did not stock it? Glad I wasn't in the boonies camping and in dire need. Thanks to this site I knew to be prepared!