ULSD vs Regular Diesel / Have You Noticed?
This is a question and not a statement... Almost all of the lube oil contamination can be traced back to soot. And in theory more soot is formed when sulfur is present in the fuel. Of course incomp...
Forum Discussion
MEXICOWANDERER wrote:
Not being a student of government mandates for emission control perhaps I misunderstood the hierarchy of the importance of severe control of emissions. It read repeatedly for years the primary purpose of federal regulations is to reduce particulates in the exhaust. This has changed?
And Mother Earth News grade bio-diesel makes things worse? Has common sense fled in panic, the collective wisdom of Americans? Forgive me Gotta go. I'm late for my KUMBAYAH lesson.
Well, back in the day, pure diesels definitely had a particulate problem, more so than gas engines. You know, "rolling coal"?
But if you take care of that, there's still NOx issues, which is what all the newer urea addition technology is for. Gas engines can get away with catalytic converters alone, but not diesels.
Biodiesel can actually be good for lubricity (which low-sulfur fuel took away), and lubricity can be good for fuel pumps. Some of the earlier Bosch CP4 pumps would blow apart cause of poor fuel lubricity. However earlier engines had gasket/seal problems with high levels of biodiesel. But now all the trucks are certified for B20.
The other issue with biodiesel, with B20 in articular, is the possibility of gelling in cold weather. We don't see much B20 up here in Ontario. I'd certainly never use it in the winter.
