Cummins approved stop leak

[rdelcamp]

The ex Cummins employee mention a coolant stop leak produt that was recomended or approved by Cummins for minor oil cooler leaks. I can't find that post. Would he be kind enough to repost the name of that product or products.
Thanks,
Ron D
96 Monaco 5.9 Cummins

[Okrver]

Saw thisWhy is Zerex Super Sealer Better Than the Rest?
Super Sealer is the only stop-leak product approved by Cummins for use in ISX / QSX 15 engines (Cummins Service Tool P/N 5298586, please refer to Cummins TRP T1235 for details). Compared to other stop-leak products on the market:

[spike45]

Originally Posted by Okrver

Saw thisWhy is Zerex Super Sealer Better Than the Rest?
Super Sealer is the only stop-leak product approved by Cummins for use in ISX / QSX 15 engines (Cummins Service Tool P/N 5298586, please refer to Cummins TRP T1235 for details). Compared to other stop-leak products on the market:

Ron and all,

I am the guilty party who originally posted the Zerex cooling system sealer post. It was developed for Cummins to use on EGR cooler leaks. Under warranty, the first fix for a cooler leak is to use the Zerex product. If that does not hold, Cummins replaced the EGR cooler, a very expensive job that takes most of a day depending on access conditions which on most oh-highway trucks with the frame rail adjacent made the job a nightmare. Do not know about Freighliner chassis on this. Nevertheless, I would still recommend using the Zerex product above the others. Avoid using products like Bars Leaks as it has a water soluble oil which is NOT good for liner cavitation pitting protection as it interferes with the process.