read the label... works to stabilize too.
I just finished a two year test. I filled 8 Jerry cans with gas (regular unleaded), and treaed them all with seafoam. I opened one every three months, and used it in whatever needed it (lawn mower, chainsaw, quad, weedwhacker, etc). the last can I just opened about a month ago, and finished in my quad last week, zero issues.
I wish I would have done a nineth can untreated, and maybe a tenth with stabil to open after the two years, but I didn't think of it. I truly wish I knew about this stuff as a fledgling product, as I would've mortaged my soul for shares! Seriously!
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