I've been leaving my coolant concentration way too low for months

Kept getting a weird finish on 6061 aluminum parts and finally checked the mix with a refractometer. Turns out I was running at like 3% instead of the 8% the manual says. Anyone else have a simple trick for keeping the mix right without checking it all the time?

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3 Comments

tylerbutler6mo ago

Yeah, marking the tank is a lifesaver. Did the same thing after ruining a batch of parts last year.

9

reeses417mo ago

Oh man, that'll do it! I just mark my coolant tank at the fill line for the right mix, so I always add the right amount.

3

holly_jones7mo ago

Mark your coolant tank? That's actually genius.

3