[solo379]

Cooling system, is the most negleted system in a trucks, and the reason, for the a lot of engine failure. There is a lot more to it, than just a freezing point.
I don't know about DD, but CAT, recomends "flush and fill" servise, every 2 years, or 200,000 miles, with the regular antifreeze.

You drain it, fill with the water, and a cleaning compound, run for couple hours, drain again, put a hose in a radiator, with the runnig water, start the egine, and run it, with water coming thru, till you could drink, that water!
Than you fill it with the fresh mix.
I believe , that Landline, has an article about that.... :roll:

[allan5oh]

Steve, listen to the guys here. Antifreeze is cheap vs. an engine rebuild.

My dad has a 92 freightliner, a couple years ago he noticed coolant in the oil. Sure enough, a liner had corroded to the point it was totally through! If he or the previous owner had changed the coolant more often, it would still be good!

I still firmly believe his engine would still be running now with over 2 million miles if the coolant had been serviced regularly.

The whole system was flushed 2 months ago.

[ken_o]

alot of guys drain and flush the radiator forgetting about all the coolant still in the engine
or have you ever seen a driver take regular antifreeze and mix it with cat extended life.

[thejunkman]

Steve you need the coolant test strips that measure SCA mix in the coolant. The Supplimental Coolant Additive provides a barrier against air bubbles hitting your cylinder liners and leading to cavatation. Which is like mentioned a hole in the cylinder liner. Its best to monitor that regularly so that once the level of SCA breaks down, you can add more.

SCA is available in coolant, such as Fleet Charge and Final Charge. Its available in a bottle(I have seen Luberfiners bottles a lot) and also in a time release coolant filter. Some coolant filters are made without the additive, some are made with the additive.

[bob h]

Originally Posted by SteveBooth

The whole system was flushed 2 months ago.

...obviously it was done improperly, or you wouldn't be adjusting the freeze point now.

You didn't read my previous posts.

[bob h]

Originally Posted by SteveBooth

You didn't read my previous posts.

Yes I did...

Originally Posted by bob h

Yes I did...

I thought these previous 2 posts were clear as a bell. THERE IS NO PROBLEM!!!


Didn't do anything. I bought some test strips and it's good for -35. I guess my 30 year old hydrometer doesn't work too well.

The whole system was flushed 2 months ago.

[bob h]

Originally Posted by SteveBooth

I thought these previous 2 posts were clear as a bell. THERE IS NO PROBLEM!!!


Didn't do anything. I bought some test strips and it's good for -35. I guess my 30 year old hydrometer doesn't work too well.

The whole system was flushed 2 months ago.

sorry, I just don't have a great deal of faith in mechanics...



...because it was flushed 2 months ago does not rule out that problem for me (that don't mean it's right... or that he's right ;0).