I'm not sure why that's so blurry
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That's OK, I took my glasses off and could read it just fine.
Is that a Sea Foam rep saying this about the ounce per gallon? You know they want to sell Sea Foam, so they've probably tested it in one of their lab vehicles. I doubt it can hurt. I'd say that's for a very dirty fuel system, like a vehicle that has sat for quite a length of time. I'd say there are methods for routine maintenance, then there's this method for a deep cleaning. If it were me, I'd be willing to give it a try, but I just don't think you need 40 gallons of treatment. I don't recall the oz in a can now. But if it's 8oz, I'd probably buy 3 cans, get your tank close to Empty, put 20 gallons in and install 3 cans of Sea Foam. I think I'd poor a can in, put in about 8 gallons, pour another can in pump another 8 gallons, pour the 3rd can in and then pump the remaining 4 gallons. This way you can hope it's getting mixed well in the fuel. Then go for a drive and shake the wheel back and forth and pump the brakes for some quick stop and go to mix it well. The reason I say 20 gallons, is cuz even on Empty, you will have some gas in the tank and you'll want to be sure to have the 1oz - 1gal ratio as he's suggesting. That should give you 20 gallons of fuel system cleaning while you drive. I do know for a fact Sea Foam works. I've seen inside some crankcases that were pretty dirty. After Sea Foam crankcase for 500 miles, I could tell it was cleaner and did another treatment again 500 miles before the next oil change and that motor ended up pretty damn clean inside.