Specific gravity of winter fuel?

Anybody ever used specific gravity to check winter fuel blends? Seems like Ive had a ton of trouble with winter fuel gelling lately regardless of additive and 2 different fuel suppliers. I have a API fuel hydrometer and it says 38 on the good stuff that is currently working and 33 on the summer blend (gasoline it sinks all the way to the bottom) but seems backwards to me. Plan to be able to mix kerosene next year and make it right from the get go. Seems like a good question right before a good cold snap.

what temps are you seeing that is gelling the diesel? Are you in an area that sells winter blend? Are any of your neighbors having the same issue?

Its been gelling at about 10. Its supposed to have been a blend but I have my doubts. Often we have temps next month 20 below. And theres been a lot of local trouble around Christmas this year as it got super cold and I dont think the blenders were ready we havent been the only one thats why I bought the hydrometer to be able to see where Im at. I have to carry a bit of fuel into the shop and let it warm up but other than that its easy to check

Is your fuel gelling or getting thick. I had that problem and no additive helped what I found was the fuel company's premium fuel was a bio blend went to the non premium no bio and problem went away.

Neither is supposed to be b10 or have any soybeans in it. The stuff I got at the station should have had a sticker on it usually if it does and the fuel guy says no.

You guys need a minimum of 50/50 #1 diesel mixed with #2 diesel. If it gets below zero, you should be running straight #1 fuel. This is premium #2 straight diesel, not a blend. Forget the canned additives. When I had the fuel business, I cannot count the number of times I went out along the road and blended #1 fuel in pickups, tractors, combines, semis, etc. Probably 90% of the folks said I added the fuel additive to keep the fuel from gelling.

Specific gravity is a weight measurement.
If you take the weight of your diesel and divide it by the weight of water it will give you the specific gravity of the diesel.
This will change with the temperature of the diesel as the colder it is the denser it gets.
Once it gets down to 14F it gets so dense it starts to gel IE it gets so thick it will not flow through the filters.

Fuel is sold wholesale using the temperature or the specific gravity of the fuel and calculated back to 60F.
In other words when you buy 7000 gallons of diesel in the winter you might be charged for 7500 gallons but if you bought this same 7000 gallons in the summer you might only be charged for 6500 gallons as it expands and contracts with the temperature IE the specific gravity changes.
The tool you are using measures this amount so you know how many gallons to charge the person for.

If you want to know if you have #1 or #2 diesel you need to know the viscosity. IE how thin are watery it is. (I use watery not as how much water is in it but rather how thin it is)
#1 is thinner than #2 IE it does not get thick enough to plug the filters as fast.
You need a falling sinker high-pressure viscometer to measure the viscosity.

pop a gallon no lead per 50 gallon diesel n let er run.
we did it from my early years trucking n still works. those additives are snake oil. now the flaming begins as im sure be some saying burn up pump. it wont

it sounds like your fuel distributor did not make the switch to winter blend. if it was me I would add kerosene to the tank in the tractor and get my winter blend that way. I will add deicer to fuel if I have water problems, not a huge fan of all of the other products for gelling issues, do not forget to change fuel filters as they are probably plugged and will not clear on there own. good luck