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Old 09-14-2011, 08:27 AM
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Originally Posted by adam83
Sorry for the late reply, I've been busy. I ended up trying both the Leaded Trick Racing Fuel (blue) and the Leaded Sunoco standard (purple). They sell them both at the pump in Auburn, WA. It could have been a placebo effect, but it really did feel like the car ran better, on both. it didnt gain much power, if any, but it seemed to run better. I know the lead lubricates so it's better anyways, but if I could afford it I'd run this stuff all the time. I didnt notic much of a difference between the 2 race fuels, but the guy told me something about end point temperature differences between the 2, which I still dont really understand, but the Trick Fuel had a lower end point temp so he recommended that one. He said the sunoco would run better with bigger jets in the carb, but I didnt notice much difference. Plus, my Holley has jumped up several jets sizes already
Lower end-point components boil off quicker, making for easier starts. That's the primary difference in summer and winter fuels...

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