I need to change my coolant. What is the preferred coolant for our CTD? Any additives? Also, is there an ideal method or an ideal flushing chemical used to help out pull the residue that is built up in there?

Previous owner installed "T" fitting for direct hookup for garden hose.

Thanks

 

They do sell a system flush kit. CLR might work also. But how it will react w/ rubber, IDK. Need to drain the old coolant or as much as you can, then hook up the hose to flush the rest out. Dump the required amount of chemical in, fill w/ water and let run or you could drive around until it reaches full operating temp. Drain and flush again, then proceed to add coolant. As far as additive, RP makes some good stuff. Use the stuff already mixed. Should be set!

 

"RP", what is that short for?

 

I've always used Fleetgaurd Compleat 50/50 in my trucks..


http://www.cumminsfiltration.com/en/...compleat.shtml

 

Green is fine, nothing special is required.

 

i just changed mine actually with supertech and flushed out the block jim lane style. should i add anything to it? i e an additive or do i completely have the wrong coolant? i used distilled water as well.

 

There is an additive called "Water Wetter" made by Red Line.
I have used it on some vehicles that ran a little too hot
and it drop the temps by about 10 degrees. It worked good.

 

Royal Purple. They make a coolant additive called ICE.

 

You should be using a Low Silicate Ethylene Glycol Antifreeze in a diesel engine, just because it is Green does not mean it is the correct one to use.

Automotive Antifreeze is a High Silicate for the aluminum engine components and is also Green.
I use Shellzone All Season Antifreeze and it says Low Silicate on the bottle.

Propylene Glycol antifreeze is also green and is the kind I use in my computers cooling system.

http://www.eetcorp.com/antifreeze/Coolants_matrix.pdf