lifespan of RV antifreeze

[Joppy]

Sadly we didn't get to use our Carriage 5th wheel this year and we were wondering if the antifreeze from last year is still good ?

[centerline]

anti freezes of all types, that are readily available for all types of consumer use are designed to have a very low rate of evaporation, and to have a high degree of chemical stability so that the chemical composition of its ingredients remain fully in solution and not degrade for a long period (4-6 years and longer)

if it hasnt been diluted, its still doing its thing...

[MFL]

As long as no water has entered the plumbing, you'll be fine, even if using cheap ethanol anti-freeze, that likely evaporated by now.

Jerry

[JesLookin]

As long as you got all the water out, no need to worry about the antifreeze.

[Second_Chance]

RV antifreeze evaporates almost as quickly as water (and the ethylene glycol component evaporates more quickly). If I were you, I would add more to the drain traps to be safe.

Rob

[agesilaus]

ScottG wrote:
Absolutely. 🙂

Very likely

[ScottG]

Absolutely. 🙂