I've used Sea Foam once on my 1988 Ford Class C motorhome with fuel injection. I found that it really smoothed it out. But I was real careful to let the breather hose suck in the sea faom real slow like until the cup I had the sea foam in was empty. Actually came real close to sputtering out a few times but got it all in. Then I let it sit for 5 or 6 minutes. Started it up and ya there awas a ton of smoke but let it burn all up then drove it up and down the highway for 15 to 20 minutes to get the motor real hot.
I really found the engine idled smoother and initially would even go so far as to say it had a little more power towing the utility trailer with the toys on it. My motorhome has 210,000 kilomters or 130,000 miles on it.
Plan on using it in the Ranger in the next week or so cause the top of the cylinders looked pretty dark and caked.
Anyone else have any experience good or bad with Sea Foam? | 
