This item (Sea Foam Motor Tune-Up) oil additives? Or fuel additives?

seafoam is mainly a fuel system cleaner and it does work well. as for your oil, it acts as a cleaner also, targeting sticky valves, dirty port holes , dirty lifter issues etc

how does it do in motor oil

I just used Sea Foam in my oil for the first time. I have a 50 year old car with its original, never-rebuilt motor. The lifters have been tapping for awhile so I thought it was worth a try. I added Sea Foam to the crankcase oil according to the directions (1.5 oz. per quart of oil). I let the motor run for about 15 minutes. The lifter noise went away almost immediately. Afterwards, I changed the oil as normal. When I drained the old oil, it was noticeably thinner due to the presence of the Sea Foam. I added new oil and filter, and the engine runs like a top now. No more noise. This stuff is great.

I can run Sea Foam in the crankcase along with my oil at all times or just as a cleaner prior to changing the oil.

If you read the bottle, the amount you use in your crankcase is a very small amount, it is not intended to replace the OIL, it just helps it work better and loosen up deposits, DO NOT PIT A WHOLE BOTTLE OF THIS IN YOUR CRANCKCASE, read all directions

I used one can for a 16-gallon fuel tank of my car, which will impact the engine?

Motor Treatment mix amounts for two-cycle and four-cycle gasoline engines, diesel engines, and rotary (Wankel) enginesThe recommended concentration of Sea Foam Motor Treatment varies depending on the type of fuel and type of engine. Please consult the table below: Type of Fuel Recommended Average Mixture Comments Normal gasoline grades (including 10% and 15% ethanol blends) 1 oz. Sea Foam Motor Treatment per gallon of gasoline Can mix up to 2 oz. per gallon of gasoline if necessary. Mixing at less than two-thirds oz. per gallon will impair the effectiveness of Sea Foam Motor Treatment. Diesel fuel (including low-sulfur and ultra-low-sulfur blends) 1 oz. Sea Foam Motor Treatment per gallon of diesel fuel Can mix up to 2 oz. per gallon of fuel if necessary. Mixing at less than two-thirds oz. per gallon will impair the effectiveness of Sea Foam Motor Treatment. For factory-designed E-85 fuel engines 2 oz. Sea Foam Motor Treatment per gallon of gasoline two-cycle, gas/oil mix fuel engines 2 oz. Sea Foam Motor Treatment per gallon of gasoline Sea Foam Motor Treatment is blended oil, and will not run a gasoline, gas/oil mix or ethanol engine without introducing hydrocarbons (gasoline / ethanol) to the mixture at a minimum of 50% concentration. On the other hand, a diesel engine will run for a short time on 100% Sea Foam Motor Treatment.Special note for oil-injected engines: Sea Foam Motor Treatment is only added to the fuel in the above recommended concentrations. Do not pour Sea Foam Motor Treatment into the oil reserve tank for oil injection!Fuel injector cleaning machines in a controlled environment use Sea Foam Motor Treatment as their safe cleaning agent, mixed with gasoline or ethanol blend at a 50/50 ratio of fuel to Sea Foam.Read more about Sea Foam Motor Treatment- See more at: http://seafoamsales.com/recommended-mix-amounts/#sthash.O27OpPQY.dpuf

Manufacturer	Sea Foam
Brand	Sea Foam
Model	result.feed.gl_automotive-part_number
Product Dimensions	19.43 x 6.35 x 6.35 cm; 458.13 g
Item model number	SF16
Manufacturer Part Number	SFM-SF16
OEM Part Number	SFOSF16
Item Weight	458 g

Motor Treatment, SF-16

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