Coolant Shelf Life

[TahoeBound]

I know to replace coolant every 2 years (and some do it sooner), but what about shelf life of an unopened container? I've got one thats probably 3 years old and wondered whether to use it or recycle.

 

[scubatech]

I know to replace coolant every 2 years (and some do it sooner), but what about shelf life of an unopened container? I've got one thats probably 3 years old and wondered whether to use it or recycle.

I would use it. I doubt that it goes bad on the shelf. You could check the Ph but I bet it is perfect.

 

[RaYzerman19]

The scientists say the antifreeze properties do not deteriorate, but the corrosion inhibitors do as they circulate in a cooling system with metals. I would use the coolant.

 

[doug44]

I know to replace coolant every 2 years (and some do it sooner), but what about shelf life of an unopened container? I've got one thats probably 3 years old and wondered whether to use it or recycle.

As big of PIA it can be to change the coolant & no more than a new unopened container cost why go cheap. Something was said once about "penny wise & pound foolish" :yahoo: :yahoo:

 

[SkooterG]

As big of PIA it can be to change the coolant & no more than a new unopened container cost why go cheap. Something was said once about "penny wise & pound foolish" :yahoo: :yahoo:

Well, my reasoning is why flush money down the toilet?

Especially when what what was said previously is accurate:

The scientists say the antifreeze properties do not deteriorate, but the corrosion inhibitors do as they circulate in a cooling system with metals. I would use the coolant.

 

[HotRodZilla]

Especially if it is unopened. No reason for it to go bad.

 

[PhilJet09]

I would use it.

 

[UHOH]

I know to replace coolant every 2 years (and some do it sooner), but what about shelf life of an unopened container? I've got one thats probably 3 years old and wondered whether to use it or recycle.

antifreeze doesn't go bad in bottle, even if opened.

Suggest use distilled water ($1/gal) to dilute or you'll probably get scale forming in cooling system.