Water pump lube is great.
I exclusively use an additive that’s: water lube, wetting agent, anti-electrolysis, and anti cavitation. Something more that just water soluble oil.
I mentioned it because it’s another combination of something to mix with water.
What I’m getting at is that tap water is not all equal. And it typically has lots of minerals and be excessively “hard water”.
Use reverse osmosis or distilled water with no minerals to mix with.
