Still learning about diesels..but woke up just now at around 6:15am and checked the temp outside and its 29F..is it safe to start my truck? I haven't added any gels yet to it, and not exactly sure when I'm suppose to?

 

Be good till around 0F.

 

Most anti gels drop the poor point by 25 degrees. It depends on where you live and what fuel they ordered at the station. I didn’t check your weather, but if it’s a sudden temp drop you have a higher chance at having issues.

From what I have learned (I have no references to back this up)… Bio diesel is good to 40 to 20* depending on what they made it from. We buy straight ULSD and were told by our supplier that it’s good to 0*, but to be careful when you get dips below 10* for extended amounts of times. We start treating our fuel with an anti gel for when the temp drops below 20 for extended amounts of time.

 

do you just buy your diesel at the pump?

If so don't worry too much because most stations are starting to change over. At least here in Wisconsin they are.

If you are real concerned most stations label their diesel as winter blend and when you see that happen just run your tank down below 1/4 and fill-er up should be fine IMO

 

Yea..I buy my diesel at a Speedway gasstation that is right off the interstate so alot of truckers go there (only 2 pumps though) but their diesel prices are like the cheapest in the area, not much more than regular unleaded.

How can I tell if the gasstation uses a winter blend? If they do, does this mean I don't have to worry about adding a antigel?

 

All diesel in Northern States should be winter blend.

You shouldnt have anything to worry about yet.

 

One way to tell is your MPG will go down by like 2 MPG when your on the winter stuff

 

So when do I have to worry?

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Okay..that really doesn't help me much..how I'm I suppose to tell that? My truck was made in 1985..it doesn't have estimated MPG computer screen..

 

Neither does mine...all it takes is simple math, when you fill up reset your trip meter or write down your odometer reading, then at your next fill up find out how many miles you went and then divide that number by how many gallons you just put in it....EX: i went 520 miles on my last tank of fuel and used 27.4 gal 520/27.4=18.97 MPG

 

I use additive all winter long just as insurance..............the stations blend 50/50 normally around here