SeaFoam

[427 S/O]

It contains Naphtha and pale oil, I'm guessing it's mostly the Naphtha which is a paint thinner?. Just another petroleum base product.

[RedBarchetta]

Originally Posted by 427 S/O

It contains Naphtha and pale oil, I'm guessing it's mostly the Naphtha which is a paint thinner?. Just another petroleum base product.

How can that be good for your engine bearings? If you are "washing" (burning?) the carbon off the piston tops and cylinder valves, then some of that has to be working its way onto the cylinder walls and/or oiling system? Or is the dilution factor just not enough to worry about (i.e. run the Seafoam and then immediately change the oil)?

-Dean

[DAVID GAGNARD]

Originally Posted by 427 S/O

It contains Naphtha and pale oil, I'm guessing it's mostly the Naphtha which is a paint thinner?. Just another petroleum base product.

I asked a chemist buddy of mine (works for EXXON) about naphtha, he said it is mostly used in paint thinners and Coleman fuel.....a petroleum distilate....very high octane rating, depending on where you find it, it could be from about 110 to 125.........

When I drag raced my 65 fastback (351-W), I would drive to Auto Zone, buy a gallon of virgin lacquer thinner (about 4 bucks then), 99% naphtha,borrow a funnel, pour it in the gas tank and go across the street and fill it up with 93 octane premium and go to the track, done it numerous times over the years, maybe as many as 20 or more, same motor, same everything still in the car today.......runs great,never had any problems....

I would think the amount of Sea Foam used in a tank of fuel would help, but not be enough to hurt bearing or cause any other problems.....

My brother-in-law uses it in his two boats (outboard motors) and swears by it and so does the local boat dealer........

David