Brad; I've been running diesels longer than I care to remember. I'd crack the cover of your owners manual and see what it says. What I do however, is use FleetGaurd fuel conditioner in the truck and tractor both, I don't rely on conditioned fuel from the pump. Last year, in March I beleive, the station I usually buy diesel, apparently changed the blend. We got a very cold snap, and the fuel in the truck gelled up. [I'd forgotten to add conditioner. /forums/images/graemlins/smirk.gif] Anyway, I went down to the local TA and got some MeltDown, cranked the engine a bit to get the meltdown up in the system, let it sit overnight, and was good to go.
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I hate it when that happens!!!