I've got a D6N with a 3126B that needs new injector sleeves. Lots of diesel in the cooling system. What is the best way to flush the cooling system? I heard purple power degreaser works well. What should I dillute that with? Or what other options work well? How many flushes should I do? Do I just get the engine up to operating temp with the cleaning formula, drain, refill and repeat till clean?
I have never used purple power for flushing a cooling system, I usually use cascade dish washing detergent powder and fill with water, run up to temp for a period and drain, repeat until all petroleum is out of cooling system. After that I’ll usually run straight water a few times before refilling with coolant.
Cascade or the equivalent seems to work the best.
Cascade. My Cat dealer even has Cascade on the shelf in the misc parts and truck area.
How many scoops of cascade should I use?
Liquid detergent will work best because it dissolves easier. Just make sure that whatever detergent you use is non-foaming. Mix at about 1:25 or 1:30 ratio. You will probably have to do the cleaning process more than once before flushing with clean water.
Understood. Thank you
Cascade works OK, but personally I've found the Fleetguard Restore works better. Don't use the Restore Plus as it's geared to remove heavy scale and rust. https://www.cumminsfiltration.com/eme/sites/cumminsfiltration-empty.bitnamiapp.com.eme/files/LI33024GB%20Restore%20-%20Restore%20Plus%20rev.%203%20march%202020.pdf