Sure it works , in many locations dyed (off road diesel) and heating oil are delivered by the same truck, from the same yard tank.
The downside is both off road and esp if it is from different storage tank, is house fuel is usually not as clean as a better grade.
Since most boats have good rational filtration , only the filter will know.
The cetane rating of house heating oil is below the rating for much diesel, however most big diesels burn it with out making a bit more diesel rattle.
The new horror is the super low sulfur fuel,it gives trucks with very new complex electronic injection about 5% to 7% less fuel mileage.
On out 8v71 we went from 9.2 to 8.9 with the new junk.
On our VW diesel Rabbit , there IS more diesel knock on house fuel, but its 40c-60c a gal cheaper and at onlt 45mpg , we retired folks need to conserve!
-- Edited by FF on Tuesday 19th of May 2009 10:03:59 AM