So im just now (I know) getting to the KDP on my CTD I bought 4th hand, When I bought the truck I knew the cooling system had been seriously neglected and was told it had simply never been changed and still had factory coolant in it, I dumped it and put in fresh coolant 2 years ago. Now im ready to do the KDP so I ran prestone cleaner threw it and every time I pulled the lower rad hose it was just Orange with rust, I pulled the rad and found that its full of rust! I took the rad down and had it roded out and new seals put in, what should I do for the rest of the system? Im installing a new water pump- but this rust looks horrible!

 

look into citric acid.

 

while I have a gallon of it for use on the driveway..... not sure if I can bring myself to pour it into my 6bt

 

I used a Cummins rad flush called "Restore"...I think it has a citric base in it...Worked great on my motor...I was also long on the tooth for a rad flush...Finally did it about 2 months ago..

 

Google it. you will see a lot of success stories and also that major oem's have flush that use it as the major ingredient.

 

I have a cummins power club member, ill pick up some restore- and run it with the old water pump, how long did you leave it in?

 

you want the plus for rust. pulled up an msds on both. the restore Is commercial detergent. the restore plus is citric acid.

http://www.cumminsfiltration.com/htm..._cleaners.html

 

If I could remember...Joe...You run "restore plus" for about 2 hours at normal operating temp..

 

ok cool, thanks for the help guys as I wouldn't have been able to look into both products with my current 8-8 work schedule. ill slap the rad back in with the old water pump and give it a try. 2 hours is about perfect as I need to pick up another 4,000 lb load of sand anyway- can I run it without the fan shroud in 80F temps? I read a lot about heater core issues- is this stuff is going to be ok with my heater core?

 

RM 125.....or RMI 25.....

 

what? The only RM125 I have is sitting in my garage

 

its rmi 25.......look it up....lots of race car and hot rod guys use it. I ve used it, and the cooling system looks new afterwards....