DIY EGR cleaning made easy

Yes, my sweetie (marine bio person, oceans oceans oceans and used to have several aquariums) mentioned that. Chloramines remain a while in water supplies. However, having done a bit more research I am not concerned about that avenue of risk:

* Typical SS (18-8 304) has no issues below 100ppm chlorine/chloride
* US EPA permits up to 4ppm at the water treatment plant. Typical home drinking water result is up to 0.2-0.4ppm

So typical municipal drinking water chlorine isn't an issue. Pools and other situations, particularly rural wells etc... That's different. (we had a well and had to do chlorine shock treatments regularly...)


Chloride/Chlorine Levels and Stainless Steel Alloy Selection - Penflex

Chlorine ppm Levels in Drinking Water - AlpHa Measure

 

Good to know.

Next time around I'm going to try lye solution, on the cooler.

The pipe between EGR valve and intake manifold is also stainless steel, but absurdly easy to clean.