Description says "Works best on metal and plastic tanks, fuel tanks and oil pans". So I used it for my mower's plastic tank. I have cooked according to directions, applied as directed and it has held up great through the last month or so of last year's mowing season. I emptied the tank and put the mower in the garden shed over the winter. Removed last weekend, filled up and it's dripping like a sieve. To test this, a lower mower/dump valve fuel was used than the repair and the repair just peeled off like a piece of wet duct tape. Complete nonsense and waste of time and money.
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