LSD vs USLD
My 06 Duramax was designed for LSD (low sulpher diesel 500 ppm), but for the last month all I can find is ULSD (ultra low sulpher diesel 15 ppm). What I have noticed using this new formula is a slight drop in power, a drop of about 1.5 mpg and now it has a stronger exhaust odor. Has anyone else experienced this? I am going to go by a truck stop today and see if the higher taxed fuel is still 500 ppm, if it is I think paying the extra $.08 will be worth it.
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