How To Use Seafoam In Oil. You will most likely experience fuel efficiency, performance improvements and a much quieter car engine by using seafoam. Make sure that you know how much to add, though, since adding too much can cause more harm. Add 1 ounce for each quart of oil in the crankcase.

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I used sea foam motor treatment in the gas tank of our vehicles as a fuel system cleaner as part of my oil analysis testing and i thought they ran smoother afterward. In this video i tested seafoam. Otherwise, adding seafoam whenever you do the oil servicing is fine.

With the car running, pour the seafoam in the hose.

How to use seafoam on z32 (1990. You can add sea foam before or after an oil change. It's better to do this treatment every three months for a car you use regularly. I want to see if i can avoid carb work as long as possible. I would not use seafoam in the oil. Seafoam is a great product that has been called a miracle fluid by many. When i read about this stuff, i discovered that it could be used in many more ways than just pouring it into your gas tank. I am slow on this.