Shelf life of opened and unopened Sea Foam Motor Treatment [SOLVED]

What is the shelf life of Sea Foam Motor Treatment? Unopened 16 oz can?? Opened 16 oz can?? I am using it in the fuel for my snowblower, and perhaps some 2-cycle yard tools (trimmers, etc).

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Jim D.
Jim D.
9 months ago

Great question, Paul.

The short answer is that Sea Foam Motor Treatment doesn’t have a shelf life – it will last a very long time if sealed or tightly capped (dozens of years).

If you have an opened can of Sea Foam, just check the color of the fluid. If it’s clear, it’s still good to use. If it’s not clear, it won’t hurt anything but it won’t be as effective.

Hope that helps!