Maybe someone out there could answer these questions for me. Seems neither Cummins nor Chrysler can.<br><br>Here in Canada (Manitoba to be exact) we only have two kinds of diesel available at the pump. Winter diesel in the winter, and summer diesel in the summer. Pretty simple with no choice in which to use.<br><br>In the US, there's a plethora of fuel oils available at the pump; kerosene, #1, #2, #2 blended and off-road. Sometimes all of the above at one pump!!<br><br>What I'm trying to determine is which to use in my '02 ETH. In the manual it states &quot;do not use #1 unless extended arctic conditions arise with temps at -5F or less. The Cummins service tech said &quot;I guess they use #1 with the ISB in the US so it should be fine. I'd use conditioner every now and then.&quot; A well thought out answer.<br>The Chrysler tech said: &quot; I don't know and no one here seems to know either.&quot; Better answer yet.<br><br>I haven't had a fuel gelling problem to date and this is using #1, #2 and Canadian &quot;winter&quot; diesel at very low temps, -20F and less. I did add conditioner most of the time.<br>I suppose my question is: Is the Canadian winter diesel the equivalent to the US #1? If the #1 diesel doesn't provide enough lube for the injector pump, why do they sell it?<br>Also, I wonder if I could get away with filling up with off-road diesel? I am legally allowed to run dyed (farm or purple as it's called here) diesel here as the truck is registered for farm use. What grade is the off-road diesel in the US? #1 or #2?<br><br>Lots of stupid questions, but no one I've talked to seems to have an answer. Thanks for the help.<br><br><br>

 

I'm pretty far south of you but my understanding is #1 is ahotter burning fuel used only in winter #2 winter blend is blended with 1 #2 off road is the same as #2 on road diesel it just contains more sulfur. Here the off raod is dyed red while the on road is green kerosene is hotter then #1 i believe

 

If I'm not mistaken #1 is Kerosene. <br>

 

Redram you are exactly right in Canada our fuel is seasonally blended and should not give you any problem with gelling. What we normally burn in the summer is graded as P25/35 and winter fuel is P40 with Arctic fuel as P50 (stove oil aka kerosene aka Jet B), so as you can see as the grade number increases the density decreases. As the fuel gets &quot;lighter&quot; the power produced gets lower but the ability to flow is increased, but as temperature decreases all oil thickens (diesel fuel oil) which allows adequate lubricity for your fuel pump. US fuel is sold as #2 (summer fuel) and #1 (winter premium fuel) and is basically the same as our fuel only they pay a premium price for fuel that is thinner with less power. You can use #2 in your truck but risk gelling if you were to shutdown your truck over night allowing the fuel to cool below its minimum pour temp eg;summer fuel -15-20F. I carry FPPF Polar Heat and if below -20F buy the overated #1 premium. There has been many recent replies of high sulphur fuel available, most refineries with recent upgrades were mandated to produce low sulphur fuels and it is costly to produce both. High sulphur fuel is supposed to be pushed to the off-road fuel users where available and state laws allow it. Dyed/Marked fuel if you use it and are not entitled to use it the question arises &quot;was the risk of saving $2 per tank worth $10k in fines and a record of tax evasion&quot; only you can decide. PK

 

mmm you can burn Kerosene in a diesel engine?