Anti Freeze

the oils i use to heat the garage and the antifreeze i bring to my work we recycle it and we pay a guy to come get it every month weather the tank is full or not .

AF does not go "bad", it can loose the rust inhibitor additive, mostly it get dirty. I pour mine into 5 gallon buckets with a lid, let it sit for 3-4 weeks(dirt and rust goes to the bottom) and then reuse it or give it away to the poor drivers with old junkers in my area.

Originally Posted by Area67

AF does not go "bad", it can loose the rust inhibitor additive, mostly it get dirty. I pour mine into 5 gallon buckets with a lid, let it sit for 3-4 weeks(dirt and rust goes to the bottom) and then reuse it or give it away to the poor drivers with old junkers in my area.

I would think there may also be a Ph issue as well. I would assume that brand new AF would be neutral.