Well, I ordered 2 bottles of the Rev-X Friday morning, and it got here Monday afternoon, FAST. I ppoured it in, and drove it about 5 miles, got it up to operating temp, and the thing completely quit missing and shaking, surging, whatever you want to call it. I got up this morning and cranked it up, and it was 49 here this morning, and it sounded like it did when it was new. No miss while it was sitting there idling, or anything. I went back inside, let it run for a few, and then went back out, and it was up to about 125 or 130 engine oil temp, and drove it, and it ran perfectly. I may crank it up in the morning, and drive off instantly, and just see how it does with the engine oil temp down around 80 or 90. Im really impressed with this stuff, and even if it did still have a miss tomorrow morning when it was down below 100 EOT, it has definately fixed or stopped my miss and rough running when it is warm, and im SOLD on it. Try it....IT WORKS.