In the past I have put 6oz. of Marvels Mystery Oil in my gas tank when I filled up(16gal). I did notice my car to have more of a sensitive gas pedal and almost like it has more HP and a new engine. On this last tank of gas I got I put a bottle of Seafoam in and didnt notice a difference. I work at Oreilly Auto Parts and all the people there swear by Seafoam for gas. Then I was wondering about the quart of Lucas Fuel treatment. I know Lucas is the best for oil treatment. Im just wondering which one will do me the most good to my fuel system. Im on 1/4 tank and ready to fill up, Hopefully with the best treatment.

 

How about none of the above?
My diesel gets regular treatment, but my gas vehicles only get treatments about twice a year.

If I'd have to pick... I'd pick Seafoam

 

I got a new one (for some members) others may know of this? anyway last year i started to date this chick who was a service writer at a porsche dealership , and said chick would always want me to take her out to lunch meh, she paid. anyway i got to know a few of the techs pretty good , and one day noticed a small container of 2 cycle oil on ones tool box , and recalled seeing this before on anothers toolbox before. So i ask Scott whats with this 2 cycle oil? he says whenever they perform a oil change or a tune up , they add a small amount of this oil to the gas and its the best cleaning agent you can get for any car. i started to do this , i only fill the lid/cap of said oil to gas tank - i do this about once a month. also this is not something a few guys just thought of , porsche recommends this , and makes the techs perform this action.

 

Here is a bit more info , that i had no idea of? maybe thus why porsche uses 2 cycle oil in the gas to clean all the insides?

 

Nice link. Thanks.

 

My diesel gets regular treatment, but my gas vehicles only get treatments about twice a year.