its that extended life stuff. yup, differnent coolant. I havent seen any of this stuff in the local parts stores but I expect it will appear soon.

 

[quote author=BIGCUMMINZ link=board=20;threadid=23601;start=0#msg222279 date=1071188612]
the coolant is 50,000 mile coolant. A couple days ago mine started leaking and i will tell you all now, go out to yuor trucks a tighten the tube going into the block heater, Those nimrods at the factory didnt tighten them all which causes leaks. Mine was so loose i could move it with my hand :
[/quote]You're the second person I've read on here thats reported a leak there. Mine was ok.

 

Run a search on coolant and you should find alot about it. It is not Dexcool, you will find out that Valvoline Zerex G-05 will work.

 

Can not use regular old style anti-freeze from what I understand! It will mess up your system big time

 

From Cummins:
http://www.cummins.com/na/pages/en/p...530004AC33EA57

Do I need to use a coolant additive in my Dodge Ram?

We do not recommend an additive for the Cummins engine used in the Dodge Ram. Coolant additives are used to protect liners from cavitation and since the engine in the Dodge Turbo Diesel has no liners, it does not require an additive.

 

Also from Cummins

What does antifreeze do, and what are Cummins recommendations on concentration?

The primary purpose of antifreeze is to lower the freeze point of the coolant. Additional performance characteristics of coolants that are affected by the use of antifreeze include boiling point and vapor pressure. A 50/50 mixture of antifreeze and water provides optimum boiling point and freeze point protection for engines. Antifreeze concentration in excess of 60 percent must never be used since it increases the possibility of forming cooling system gel which results as silicates precipitate out of solution. However, concentration of antifreeze less than 40 percent increases the possibility of coolant freezing and liner pitting. Therefore, Cummins recommends an antifreeze range of 40 percent to 60 percent. Fluids presently used in antifreezes are ethylene glycol (EG) and propylene glycol (PG). Diesel engine antifreezes have primarily used EG products because they are less expensive than PG products. Some antifreeze applications require less toxic substances which have driven the use of PG. Engine-related applications of PG primarily have been applications where environmental concerns have disallowed the use of the more common EG products. For more information, refer to Cummins Coolant Requirements and Maintenance, Section 7, Bulletin 3666132.

http://www.cummins.com/na/pages/en/p...530004AC33EA57

 

Here is some more information on this from Dodge:

It goes on to say this:

Quote:

Mopar Antifreeze/Coolant, 5
Year/100,000 Mile Formula (MS-9769), or the equivalent
ethylene glycol base coolant with organic corrosion
inhibitors (called HOAT, for Hybrid Organic
Additive Technology) is recommended. This coolant
offers the best engine cooling without corrosion when
mixed with 50% Ethylene Glycol and 50% distilled
water to obtain a freeze point of -37°C (-35°F). If it
loses color or becomes contaminated, drain, flush,
and replace with fresh properly mixed coolant solution.

So there you have it