From 2006-2010, ULSD, or Ultra Low Sulfur Diesel, was phased in for highway diesel fuel. By 2014, ULSD will be phased in for all non-road, locomotive, and marine engines. The goal behind removing sulfur from diesel is to decrease pollution from emissions, but there are some downsides. Here are some facts about sulfur and its role in diesel fuel:
- Sulfur is a naturally occurring element in diesel. It’s not an additive. The process to remove sulfur from diesel fuel is both expensive and damaging to the fuel quality.
- Sulfur is a lubricant. In the past, diesel didn’t need lubricators added to the fuel. The sulfur in the fuel naturally lubricated injectors, valves, and other moving parts in diesel engines.
- Sulfur is antimicrobial. With less sulfur in our fuel supplies, microbial growth is an even bigger issue.
ULSD has caused new, unforseen problems for end users. These problems are preventable, however, if you know what’s going on with your fuel and how to maintain its quality.
We at Diesel Fuelmasters pride ourselves in our sharing our fuel quality expertise with each of you. For more information about differences in our modern diesel fuel supplies, check out our resources page.