Power Plus Engine Oil Additive 19769-58 Hot Oil 4oz Combustion Enhancer

Make cylinder rings seal better, can improve miles per gallon of fuel.

During a recent 250mile trip was able to witness an increase in gas mileage of 4 miles per gallon.
Must point out the exact following of their instructions, as learned in the past, when adding any product to the crankcase.
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Verified purchase:  Yes • Condition: new • Sold by: heintzbrosauto1