I've been using this stuff since the late 80's. There is a reason that this 103 year old product is still being sold, and for the life of me, I can't understand why it isn't more popular. It's cheaper than nearly all the alternatives, works nearly as good as the best fuel system cleaner on the market (BG-44K) and doesn't harm new or old vehicles in any way.
What it does do, is clean the injectors, and the carbon build-up that forms over the miles. It also has a nice side effect of increasing fuel economy when it's being used so that helps to offset it's fairly low up front cost.
Chemtool isn't sponsoring this video, and didn't ask me to make this video for them. This is one of a few products that have, over the years brought me good results and I thought I'd share that info with you!

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