I think higher sulfur oil is inferior. It certainly is for kerosene.
Nope.. I forget who, Obama? maybe Clinton? changed the sulfur levels in diesel fuel.. the higher sulfur is what older diesels were actually made to run on. I run additives (like lead replacement type stuff only for diesels).. low sulfur diesel is very dry and doesn’t lube injections pumps well.
Perhaps - but there's a Green fly in the ointment.
The low sulfur formulations are required to have biodiesel in them - around 7 percent, if I recall correctly.
I used to spot-heat with a kerosene heater before the low-sulfur formulations were mandated.
When they switched over, I had trouble running my heater like I did before, and I couldn't figure out why.
My portable heater kept eating $15 wicks [including the nastiness of changing the wicks].
Then I found out about the french-fry oil mandate.
The biodiesel was attracting moisture and ruining the wicks prematurely.
That same winter, my buddies were logging an 80, and it got real cold.
They were having trouble with their low-sulfur diesel gelling and making it hard to start the machines.
I told them about the biodiesel, later.
PS: In between the price of kerosene and the wick-eating, I no longer run my portable heater.
It is no longer convenient and low-cost [I did it for 4 winters, at 1.50 a gallon for K1].