MARVEL MYSTERY OIL® ADDITIVE 16 oz.
Clean engine = better fuel economy
There’s no mystery to how this oil can improve and protect your car from the inside. Add it to every tank of fuel and every oil change, and you’ll clean and lubricate fuel injectors and carbs, improve fuel economy, help prevent valves from sticking or clattering, and prevent oil breakdown from extreme temps.
Net weight: 1
Add to every full tank of gas or diesel. 4 oz. for every 10 gallons of fuel.
Replace one quart of oil with Marvel® Mystery Oil in standard 5-quart engines.