Is there something that can be used with water injection to help keep the nozzles clean, lubricate the pump and prevent corrosion without hurting injection performance?

machining water soluble oil? meth?

 

I use water soluble oils as a coolant & lubricant in some of the machine tools in my shop. It works fine, and does leave a sticky oil residue which inhibits corrosion. Given the latter, I'm not sure I would characterize it as a cleaner in any way. It should have a mild solvent action on other oils though. Not sure it would be happy with alcohol.

Back in the day, we would use soluble oil as a rust inhibitor in our cars' engines if we were running straight water rather than anti-freeze. I used it a lot and it worked fine, at least on steel, iron and copper or brass. Don't know what it might do with aluminum; I doubt that it will react, but I'm not sure how well it might protect since aluminum is more active electrolytically.

 

Well, I'd only use low concentrations if I do.

I had a stainless steel valve in my water injection setup that developed some rust internally that hindered injection flow. I took the valve out but I wonder if other things may also corrode.

And even though I use distilled or reverse osmosis filtered water I still worry about mineral deposits that may clog the nozzles. I inspect them every so often and clean them if necessary so it's not a problem for me but just in case...