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Benny that makes sense, guess its been a few years since high school chemistry. So far I've made sure to avoid it in college lol.
wallace32,funny you mention that because on my last fill up I decided to ask if they put anything in the winter fuel to stop gelling. The manager said they put it in their fuel year round, and also that it is 45 cetane instead of the usual 40 you get at most stations. So if anything I would expect the truck to run better
I have noticed on cool, dry nights it always seems to be in "fast" mode. Today wasn't hot, but it was pretty humid so maybe that's why it was slow. I'm going to start remembering the weather on the days its sluggish and see if I can come up with some sort of connection.
Vehicles that are boosted will vary in performance due to air temperature and pressure, that's normal. Even my NA vehicles from my 'Vette to Fusion have their "days". But one constant in the truck is the "warm up" strategy of the PCM which cuts power till the engine is warmed to prevent engine/tranny damage.
Mine is only sightly sluggish when the engine is below 150 degrees, but I typically baby it until it is warmed up.
Ditto. The dealer diesel tech says it is a known issue, that the Ford engineers have supposedly known about and have been "researching" for years. He says just wait until the truck warms up.