what kind of oil do you guys use and oil treatment and gas treatment?i use mobil oil 10w30 and have used restore,stp oil treatment and 1 time used bars leak and this last time on wifes van mystry marval.gas treatment has been stp and rubbing alcohol.what is seafoam and how often is it used and do you leave it in the oil the whole time till the next oil change ?thanks

 

You really don't want to use Seafoam if you have converters, I hear it clogs them.

You can substitute a quart of oil for one of Marvel Mystery Oil, through 5 oil changes and it will clean everything out. No need to waste money on treatment junk.

As for the gas, you can also use the Marvel Mystery Oil for it.