Products used in the engine
 

Ok so I am wondering about all those additives that you can buy and put into your car to clean the system out, or like with the fuel one. I am wondering how many of you guys and gals use these products, and why or why not.

I my self have always wondered if these actually worked.

Seafoam does. all i use.

Fuel injector cleaner about once a year. I've seafoamed before. (don't see the need to do it often)

Occasionally use some seafoam in my oil, to rinse out the sludge... but thats not often

I seafoamed for the first time a couple of months ago. I think it helped a bit.

i seafoamed my car
I use injector cleaner