Here's the detail..
Diesel is higher in BTU's, so you should be getting a little better heat-per-gallon with the diesel fuel.
Adding DieselPro fuel conditioner, or similar additive to diesel will totally remove and control the soot issues.
follow dilution instructions on the can, ..as insurance on a good running system.
at least every other tank or 3.
Double the dose if there are more than just traces of soot on yer coil ..looking down the stack.
The trick is, it MUST have enough air to burn correctly.
Example..
Employee didn't report the heater acting up, so..
.. soot has inundated your coil, and it won't burn right at all..
Not only do you have to "triple-dose" the Diesel-Pro, or add Soot Remover,
but you might have to reduce the Fuel nozzle size in half, just to get a fire that burns right..
in that case.. go to kerosene, as it does not require quite as much air to breathe..
Then when the soot has burned away, you can change the nozzle back to the bigger fire,
and you didn't have to "rinse the coil manually"..
.. aka.. the BIGgest, NASTiest MESS that could EVER happen around a cleaning machine. :shocked2:
If you don't know how to adjust the air-bands for the "perfect fire"..
the idea is.. close the air 'til you see a little smoke,
then open them just enough to get a clean exhaust out the stack.
..no more air than that, cuz it can "blow-out" the spark, giving intermittant fire 'n smoke 'n oily-leaks.
..no less than that, cuz the SootMonster will come back. :grin-devilish: