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In for two and was also curious about shelf life so see below.
Taken from their website about Shelf Life
DOES SEA FOAM HAVE A SHELF LIFE?
ANSWERING QUESTIONS ABOUT OLD CANS OF SEA FOAM.
Sea Foam was trademarked in 1942. Even today we receive phone calls about unopened cans that were produced at some point during the last 75 years.
It's all good!
Because Sea Foam Motor Treatment, Sea Foam Spray, Hydra Trans Tune, and Deep Creep are derived from organic petroleum, none of their contents will degrade in a sealed container that is not exposed to the oxygen atmosphere.
Two answers:
No matter how old, Sea Foam does not have a shelf life if a container remains sealed.
On containers that are opened and re-capped, Sea Foam will maintain much of its cleaning and lubricating qualities for several years though there are always variables to consider. We at Sea Foam would not hesitate to use, anyway. Exclude occasions where the history of the container is not known.
Wow, smoking deal. Grabbed 5 Gallons. I add 1oz of this to each quart of oil on every big and small engine I have, just before an oil change (Let it run for 20-30 minutes). I definitely see a difference with the crud that comes out, keeps the engines much cleaner, and runs smoother. I use around a gallon a year, so should be set for the next half decade.
Grr none by me but 40 available 70 miles away. I use this all the time in my 2 older vehicles and scooter. Could use 5 jugs but worth 2.5 to 3 hrs drive ?? I hate these decisions. It's worth it financially but…..
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Taken from their website about Shelf Life
DOES SEA FOAM HAVE A SHELF LIFE?
ANSWERING QUESTIONS ABOUT OLD CANS OF SEA FOAM.
Sea Foam was trademarked in 1942. Even today we receive phone calls about unopened cans that were produced at some point during the last 75 years.
It's all good!
Because Sea Foam Motor Treatment, Sea Foam Spray, Hydra Trans Tune, and Deep Creep are derived from organic petroleum, none of their contents will degrade in a sealed container that is not exposed to the oxygen atmosphere.
Two answers:
No matter how old, Sea Foam does not have a shelf life if a container remains sealed.
On containers that are opened and re-capped, Sea Foam will maintain much of its cleaning and lubricating qualities for several years though there are always variables to consider. We at Sea Foam would not hesitate to use, anyway. Exclude occasions where the history of the container is not known.
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If not, check out the other Sea Foam post for the small bottles deal.
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Well $19 for 4 16oz is still useful.
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