ISX CM871

[Rawze]

(06-12-2023 )Dieselboy Wrote:  ..
Green is what was in it when I bought it. It went to a Cummins shop in Jacksonville twice (I know now they are likely idiots) but they didn't say or do anything about the green coolant.

The problem with using the wrong type(s) of coolant in a wet-liner engines .

(original ref: http://rawze.com/forums/showthread.php?t...14#pid1114 )
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(posted 03-15-2016) ...
Here is some info on coolants that I have collected ...

Types of coolants that can be used in a wet-liner Diesel engine (ISX, Detroit, CAT, etc...)

Conventional coolant (usually green)/cheapest -- You need to add an SCA (typically 10 Oz per 4 gallons) and maintain the Nitrate level at all times, checking it at about every oil change... You need to constantly maintain it through testing and additives, or it will cavitate on the liners and eat through them, destroying the motor. I have seen a few truck owners destroy their engines like this,... These engines are NOT like car engines,... you cannot just dump in green coolant and forget about it,... It HAS to be maintained and monitored closely!.

GREEN coolant is NOT your friend on a wet-liner engine at all!!,.. and running cheap green can be very harmful over time if neglected even a little bit. Commercial wet-liner engines simply are NOT designed around green coolant, and some engine makers can even void your warranty if you do this!.

Here is a picture of what happens to liners with neglected coolant systems and no nitrates!...


(the pitting in this photo is deep enough that coolant started seeping into the cylinders. This happened only a few weeks after someone started using straight water in their engine instead of proper coolant.)


(after doing my own reading and digging into this subject, as best I can tell) ...

Pre-charged coolant (usually purple, blue, or pink). This stuff is just like cheap GREEN,... but has an initial dose of SCA. You don't need to use additives initially when dumping some in, but it HAS to be maintained just like green coolant after it is put in.

G-05 coolants. Comes pre-charged with SCA package. Occasional Flush is required with this stuff (aout every 300 - 400k miles or so). SCA testing and maintenance is required about 2 times a year.

DEX ( Dexcool) / Orange coolant you see at Wal-Mart, etc... -- NOT very good stuff for a big-rig, and NOT designed for wet-liner engines. It will mix a bit with red in a pinch,... but NOT with green!... It will become very acidic!,... Just stay away from it, that is my recommendation.


Heavy Duty Extended Life Coolants (RED Coolant). Come pre-charged with everything needed for wet liners. Testing and maintenance is needed about 2 times a year. It usually will last about 500k miles or more. I think if you want a coolant you can dump in and pretty much forget about,... this is what you should be using.

Specialty coolants -- Evans. Waterless,... There is no testing required for the stuff other than watching its color,... If it turns dark,... It is going bad and getting acidic,... attacking your aluminum components (radiator etc.). It is hard to get if you have a coolant leak,.. and CANNOT be mixed with any other type of coolant,... nor water. This stuff is NOT recommended. Here is why... http://rawze.com/forums/showthread.php?t...14#pid1114