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Heavy duty diesels should be treated approx 10% by volume, due to the tendency of the oil to thicken over time and their lower engine speed range.


 


We had good luck with one gallon in a 13 gallon system.


 


Up to 2 gallons could be used in this application.
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PA300 Oil Supplement Gallon 5 Gallon Bucket of Power Punch
Power Punch Oil Supplement in Plastic Gallon Jug.  Beats wear, friction and heat.  Increases power and mileage.  Save money and drive farther. 5 Gallons of Power Punch Oil Supplements in a plastic pail.  Beats wear, heat and friction. Increases power and mileage.