2007 3 door pistons

[mark293]

Originally Posted by myfirstyota

Which brings me to the question, how do you choose to introduce it to the engine?

I've used it once on my old 300m special. My buddy at that time worked at napa and we gave it a go. We chose to introduce it through the intake manifold via an unplugged vacuum line.

But I also hear you can just pour it in the gas tank...

I have used it both ways. In general, I only use the vacuum line method once every couple of years, and in my fuel at least once every other oil change.