[scook]

I get 143.36.

128 oz in a gallon/ 50 = 2.56 oz per gallon.

2.56 oz per gallon X 56 gallons = 143.36 oz for 56 gallons.

143.36 oz/ 32 oz per qt = 4.48 qts for your 56 gallons of gas. I’d say throw in 4 1/2 qts and go fishing.

Or you could use 1 qt for every 12 1/2 gallons if you’re just topping up the tank.

No guarantee, but I never missed ordering the right amount of concrete to fill the forms we built and usually heard rocks rattling in the readymix truck when we were done pouring.

Glad you’re enjoying the boat. Mine’s sitting waiting for me to get back to it, and also for some fish to return to the area so it’s worth the gas to go out.