View Single Post
Old 09-24-2015, 06:01 PM   #32 (permalink)
Master EcoModder
UFO's Avatar
Join Date: Sep 2010
Location: Denver, CO
Posts: 1,283

Beetle - '01 Volkswagen Beetle GLS
90 day: 51.36 mpg (US)

4x4 - '89 Toyota Pickup DLX
90 day: 33.09 mpg (US)
Thanks: 302
Thanked 165 Times in 128 Posts
Originally Posted by deejaaa View Post
sulfur lubricates as lead did. correct me if i'm wrong.
Here is my understanding of the ULSD reformulation. The sulfur is not a lubricant, however the process of removing the sulfur also reduces the fuel lubricity. In addition to the ridiculously low cetane of the new ULSD fuel, and what I perceive to be less energy, I never run straight D2. Even during winter I run at least B20. I get better mileage on biodiesel than pump diesel; this I have tested back-back directly, it's less than 5% difference, but that's why I think there may be less energy in the ULSD -- might be cetane differences too, but since we are in the Unicorn Corral we are allowed to speculate rampantly.
I'm not coasting, I'm shifting slowly.

  Reply With Quote
The Following User Says Thank You to UFO For This Useful Post:
deejaaa (09-24-2015)