Sulphur provides publicity to diesel,
<15ppm ULSD has very little left.
Fuel from the rack is not treated unless the jobber pays for
premium fuel, most don't.
So, it's usually handled by the driver dosing out of a five gallon can.
1 quart/1k gallons, with the stuff we used.
Mistakes happen, I'm sure with some lazy drivers, nothing happens.
Look up the clearances in an injector pump piston. It goes well beyond .001.
If I remember the Cat guy said it was .000005. 5 millionths!
I almost always add a lubricity additive.
As for gelling normal diesel doesn't gell until -5°F.
USLD can gell as high as 17°F, depending on actual sulphur content.
Anti gelling additives are influenced by sulphur content, and can
be ineffective if the levels are too low. We sometimes see sulphur at 5ppm.
Adding kerosene or even highsulphur fuel oil can really boost sulphur and
lower the gell point. If, your engine is old enough to accept it.
Of course,
that's illegal.
But, we can buy clear kerosene her in a jug...
