According to Paul M. Eldridge :
On Tue, 05 Feb 2008 21:03:10 -0000, (Chris
Lewis) wrote:

According to Paul M. Eldridge :

In addition, the sulphur content in home heating oil is significantly
higher than that of on-road diesel -- upwards of 5,000 ppm, whereas
ULSD is limited to 15 ppm or less. Marine diesel, or what is commonly
known as "Bunker C", is the dirtiest of all; it can reach as high as
45,000 ppm! [Something to think about when you book your next holiday
cruise.]

As I recall, Bunker C is also considerably heavier than regular diesel
fuel. Even at only modest temperatures, it has to be preheated to
get it to flow.

I've never laid eyes on the stuff myself, but its been described to me
as the scrapings from the bottom of the barrel.... with a viscosity
not unlike that of asphalt. ;-)

I had a summer job in an oil refinery, testing products in the lab.
I don't think that refinery produced any bunker C, it all either
went into asphalt (at the time, this refinery produced 85% of Ontario's
road building asphalt, plus specialty asphalts/tars) or further processing
for lube oil base stocks (at the time the most advanced lube production
facility in North America).
--
Chris Lewis,

Age and Treachery will Triumph over Youth and Skill
It's not just anyone who gets a Starship Cruiser class named after them.