I added a can of this Tuesday morning to my runabout with a 2.3l 4 cyl engine with 120k miles on it. The engine is in good condition but would seem to load up after startup and idling waiting for it to warm up before driving. I have only driven 27 miles after adding this and i can already tell and hear the difference in the engine,i know that sounds crazy but i can. They recommend adding this during an oil and filter change for best results but i added it without doing it. In the video above he says what the compression was on the cylinders before adding the Restore treatment and he has another video after driving 200 miles and doing a compression test again on the cylinders,a big difference in the 2 lowest cylinders. If you have a good old car with a lot of miles on it you might want to give this a try to add some more life to it. It only cost me $7.49 for the 4 cylinder formula. They have it for 6 and 8 cylinders as well at a slightly higher price.
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