Heating oil is always #2 mainly because it has higher heating content
and more of it is available when the crude is processed. The only time
#1 is used is when the tank and lines are outside and above ground
because paraffin crystals will form in really cold weather and block the
I've lived here all my life in upstate NY.
It's usually #1 fuel oil UNLESS the tank is in a semi-heated area inside
the building (basement, whatever). If the lines are outside, exposed to
the extreme cold, #2 fuel oil will flow slower and plug filters much
faster. In extreme sub-zero temps are are common in the northeast #2
will often have flow problems thru the filters at the tanks and in the
tank screens on the takeup pipes. Also, if the runs are long and along
freezing outside walls all it takes is an insulation opening to allow
the fuel oil to get gummy in the pipe.
There is an incredible amount of misinformation and opinion sans fact
in this thread. It's amazing.
That would make some sense. In the northeast houses generally have
basements and the 275-300 gal tanks in the basement are the norm,
therefore no cold oil issues. In the midwest where the other poster
noted everything was #1 basements would be less common and outdoor tanks
more common. Also in the midwest there is probably a lingering history
from kero powered farm tractors involved.
Yes, some people seem to be oblivious to the fact that #2 *is* the grade
of fuel and whether it's followed by "fuel oil" or "diesel" it's still
the same grade of fuel. The difference is taxes, and so a very small
extend additives for the on-road diesel in colder climates.
Diesel generators normally run on #2 fuel. In some cases where a large
quantity of fuel is stored, #1 is used since it stores a bit better. In
the very unlikely case your heating fuel delivery tickets just say "fuel
oil" without mentioning the #2 or #1 grade, then you need to check what
it is, since there are lower grades (higher numbers) that are usually
only used in large commercial boilers in large buildings.
Again, as I noted originally, find the local Generac/Guardian, Onan or
Kohler dealer, tell them you need a small diesel standby generator
package and let them provide you with the relevant details for the
equipment they can provide.
Last time I lived in an oil-heated home, the driver of the fuel delivery
truck told me that #1 was kerosene and #2 is one step heavier, and that
most home oil furnaces work fine on both but usually get #2 due to #2
The usual jet fuel (Jet-A) ia a minor modification of kerosene. I even
sometimes smell a distinct kerosene scent around jet engines that have
been running only a couple minutes - and I have had experience at small
airports barely big enough to accomodate small jet airplanes, where I get
to go around outdoors around aircraft.
Military jet aircraft use slightly different fuels that are minor
modifications of kerosene or kerosene mixes.
I would think that jet fuel usage would bid up the price of #1 compared
- Don Klipstein ( firstname.lastname@example.org)
Not to mention engine diesel has lubricity additives, detergents, and
other additives necessary for long term performance and reliability of
Even if you don't personally care, beginning this year (unless delayed
which I don't believe it has been) low sulfur is mandated for small
off-road diesel engines as well as "road" diesel. This will be phased
into eventually covering all diesel engines.
ACTUALLY, no. Neglecting SAE recommendations for blending in #1 for low
temperatures there are three discrete #2 weight products available that
are totally different. #2 heating oil, NRLM and ULSD. You can verify
this by calling your local liquid fuels terminal and asking. You can
also talk with with my buddy who just spent a lot of money buying
dedicated tank trucks just to handle the ULSD.
True, and in recent times there is something else to consider. There are
government mandates to lower the sulfur in fuel oils. Diesels depend on
sulfur for lubrication. Now they blend in lubricity additives into
diesel at the terminal to compensate.
That used to be accurate but the low sulfur mandates have changed
things. When they dispense diesel at the terminal they also have to add
extra additives to improve the lubricity. Diesels depended on the sulfur
for that. Now that most of it is gone they need to compensate. So when
they dispense diesel there is an on road version that has the additives
plus the dye and then there is an offroad version with the additives and
Well, first off, the off-road / heating version gets the dye, not the
taxed transportation fuel version. Second off, the sulfur lube issue
exists for older engines, and you need to add the additives to the fuel
you use for them, because it is not added at the terminal since new
diesel engines use different materials to account for the loss of
lubrication for the injector pump.
Here is some real information re: ULSD and it's issues. Again remember
that a newly purchased diesel standby generator set will have accounted
for the ULSD issues, and also will log perhaps 100 hours of run time per
Yes, I flipped the dye use. What I described is current practice. There
is no additional qualifier for diesel except on or off road. Both get
the additive and one gets dye. My buddy is the manager of the fuel farm
that supplies most of the fuel for this area and my other buddy has a
large liquid fuels business. I am quite familiar with current practice.
The information I gave is real information. Your cite only says that
because of complexity things may not be as described. According to my
friends that is exactly what happened. They don't blend a diesel for new
engines and a diesel for old engines because of the complexity. It
already is complicated enough. Previously my friend could schedule
deliveries of off road and fuel oil at the same time. Now they need to
run off road, then on road, then fuel oil at separate times.
We don't know if the new genset they might purchase is suitable for use
with ULSD and the whole point of this part of the thread is that there
is a difference between fuel oil and diesel.
Nonsense, any diesel will run just fine on #2 fuel oil.
As just one example: I've personally watched a lyster engine
run on vegetable oil, fuel oil mixed with motor oil, and even
cooking grease thinned out a bit (quite a bit) with kerosene.
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