On Jan 30, 2:11�pm, "Eisboch" wrote:
I've noticed a big difference since the recent introduction of the Ultra Low
Sulfur (15 ppm) fuel in this area of the county. *With the older fuel (Low
Sulfur - 500 ppm), my F-350 would occasionally give up a whiff of diesel
exhaust, especially when cold, and the tailpipe tip would be pretty much
soot covered between washings.

The new ULS fuel yields absolutely no diesel exhaust smell at all ... and I
noticed yesterday that although the truck had not been washed in several
weeks, the exhaust tip was still relatively clean.

I think ... (not exactly sure) that the 15 ppm fuel will be required for
marine engines in 2008 or 2010. *I am convinced it will reduce transom
washing much more than any magical magnetic device.

Eisboch

Not too many years ago, it was common to see sulfur additives sold for
use with these low sulfur fuels. It was interesting that my Perkins
dealer recommended the sulfur additive for my original engine (1982
model). After the disaster with the breach in the exhaust manifold and
the resulting hydrolock created a need to repower with the new Perkins/
Sabre I was told the sulfur additive was no longer needed. Something
to do with the valves, IIRC.

I guess that most highway engines wear out before they get to be 20
years old, but I wonder if the ultra low sulfur fuel is entirely
suitable for some of the marine engines that are 20 years old, have
2000 hours, and very well might serve another 10-15 years before
replacement.?