Full bottle in 1/2 to full tank
Half bottle in oil 50-100 miles befor change
other half bottle have someone sit in car and keep it running and poor it into the brake booster hose slowly not to stall the car untill you get to like 1/16-1/8 of the bottle left then poor it in quick hoping to stall the car. If it doesnt have them shut it off immediatly cus you want the seafoam to soak into the carbon build up in your engine. Wait 20 mins and start the car. Let it idle a bit then start lightly reving untill your exhaust clears up
