Someone may want to try this to see if it helps with gelling while driving in cold weather.

It is possible that the fuel cooler is cooling the fuel to much and that may contribute to gellin. If you block the cooler, that will increase the temperature of the fuel. The cooler radiator is acting like a air Conditioner with the air flowing over it.

I don't think you will need the cooler at all in the winter, or when temperatures are lower than 50.

Cannot test this in So. Cal-- LOL. :D

I was thinking the exact same thing. Here around Chicagoland I've tried everything. Different types of additives, the winter covers, changing fuel filters. Once the temps reach about 28*F and lower I have nothing but fuel issues. My next move was to do something about the fuel cooler and driving up to Wisconsin to see if there diesel blend helps. I've done the searching but don't really come up with much about blocking the cooler.

I was thinking the exact same thing. Here around Chicagoland I've tried everything. Different types of additives, the winter covers, changing fuel filters. Once the temps reach about 28*F and lower I have nothing but fuel issues. My next move was to do something about the fuel cooler and driving up to Wisconsin to see if there diesel blend helps. I've done the searching but don't really come up with much about blocking the cooler. wow 28* is warm i have never had a problem at -15*f without using additives. What are you using for fuel???????????

For fuel I've been filling up with what is around here. Citgo, BP, Mobil, and every once in a while at truck stops. But its usually at Citgo because of convenience. The gelling issues seem to be temperature related though versus fuel related.

I was thinking the exact same thing. Here around Chicagoland I've tried everything. Different types of additives, the winter covers, changing fuel filters. Once the temps reach about 28*F and lower I have nothing but fuel issues. My next move was to do something about the fuel cooler and driving up to Wisconsin to see if there diesel blend helps. I've done the searching but don't really come up with much about blocking the cooler.

I live just a bit south of you.My 06 is in the garage(unheated) at night on most nights. but I've had it sit outside in a wide open lot at Ohare where I work for 10 hrs at a time at temps way below 28,numerous times sub zero without the wind chill. And Ive never had it even burp trying to start the whole time I've owned it. Istarted using stanadyne about a year after I bought the truck and use the performance formula year round. I've never even installed the winter cover. I still have some of the summer blend in the tank and even with the nasty weather we had last week it started and ran fine. I go out of my way to pay attention to the stickers on the pumps and try to avoid the biodiesel blends.A lot of the stations around me are getting pretty heavy on bio.

I was thinking about getting a fuel filter heater blanket for my truck. Mine starts acting up below 10 degrees. It will drive fine as long as you don't get on it. Power Service seems to help.

I started a thread on this last winter, same thought...it went no where, thought someone would have tried it by now?