Pros, talk to me about coolant testing. Nervous about wet sleeves

I have several older machines. I also bought my tractor with a fresh engine because the coolant ate up the wet sleeves and killed it. That tractor got an additive filter unit to leach stabilizers in the coolant.

For these reasons, it has really been on mind to test and check my coolants to ensure I am not hurting the equipment. But I don't think you can just stumble into Auto Zone and get much more than concentration strips. I do maintain proper concentrations but I know certain...

Pros, talk to me about coolant testing. Nervous about wet sleeves

Pros, talk to me about coolant testing. Nervous about wet sleeves