Best way to know is to test the market. Throw up a landing page or website and run some ads (think $100-200 to get a good idea of the demand). See how many calls you get and go from there.

Or look at similar businesses that have the same idea. Give them a call and ask them questions like their rate of installation, availability, whatever else.

This is a niche idea, so it may be good to call into commercial businesses and see if they could use a hand with this. Do good work and they’ll keep in touch.

I don’t know anything about the HDM trade but this is how I’d tackle the idea.

Yes try this diagnosis.

If you’re draining it you can use a piece of tubing or turkey baster and save it to add overtime to other mixtures where the coolant concentration isn’t as high.

Might just keep some pairs of Nitrile gloves in my pocket at all times going forward.

Hands would dry out otherwise. I’m thinking some coconut oil before/after to lock the moisture in.

Did not know about the moisture bit. I’m thinking the oils or fats help stop the skin from soaking in as much of the fluids that are water-based.

Thanks for the tips!

The battery can be charged once it dies. It needs current first, then you can charge it up to correct voltage.

Going to use a cheap multi meter and see.