Maybe I should have said that the tractor that I though I would use the fuel oil in is a MF 35 with a 4 cylinder Standard Diesel. I paid about $1400 dollars US ($2000 Canadian) for it a few years ago and I have to say that after approximately 46 years of service the engine could use a rebuild. I figure I use about 500 gallons of #2 diesel in my Massey in a year. I have three other tractors including two diesels.
A couple of months ago I got a price from someone to dispose of the old heating oil, which I "inherited". It had been in an abandoned underground storage tank. They wanted 17 cents a litre (I am in Ontario, however I am using US dollars in this e-mail) or say 64 cents a gallon plus a trucking charge of $260 to take it off my hands.
I think at this point I will have a talk with my distributor about reconditioning the old oil. Dyed #2 costs me about $1.30 a gallon
At this time most of my outbuilding heat is via wood stoves. I do have one old oil heater which I do use when (sometimes) I want quick (?) heat. Last winter I used about 50 gallons of diesel in my oil heater.
I did a little visual comparison and the #1 fuel oil appears very similar to the #2 diesel from my bulk tank although the viscosity is lower. Obviously I would expect to pass the old oil through my 10 micron pump filter. My checking on oil company web sites and comparing spec sheets suggests that while the BTU content will be down by about 5% from #2 diesel it is the same (sans additives maybe) as #1 diesel. I would expect to cut the fuel oil with #2 diesel and figured that the higher cetane levels in the #1 fuel oil would be an advantage during the winter. I am hoping that the #2 diesel will provide enough lubrication for the injector pump of my Massey.
The biggest concern I have is the age of the fuel oil. From what I have found out the biggest problem with using "old" oil is really the biological one. Provided I can kill off and filter out the bugs I should be OK. Today the temperature was about 14 F so the bugs (if any) are having a tough time. "Gum" is the other concern. I am at a loss over this issue. I figure the best bet is to use some injector cleaner in the Massey's tank on a regular basis.
Thanks again to Paul, Tom and David for the feedback.
Any more comments would be appreciated.