what is the purpose of the sea foam and can it be done to all vehicles?
Seafoam is a product that will "CLEAN" all of the internal combustion parts of your engine ( ie: intake, valves, pistons) it removes the carbon build up that all engines produce and makes the engine run more efficent.
Seafoam does have a few restrictions but it does work in all gasoline powered motors. Just read the can at your parts store before using.
There are actually three ways to use the product. You can:
1. suck it in thru a main vacuum source that feeds all cylinders of the motor to clean the carbon build up.
2. Add it to your gas tank to clean the fuel system and more importantly the FUEL INJECTORS (carbon build up on injectors causes a poor spray and bad fuel economy)
3. Add to your oil prior to changing your oil to remove sludge build up. ( do not drive with the seafoam in the oil you can harm the bearings, just add it in and let it idle for a while when warm to clean)
Hope this awnsers your questions.