It spurs some curiosity, but doubtless goes unnoticed by most.
The smell is a little more unique. The car fires up like any diesel, with the “chug-chug” rumble reminiscent of a semi-truck. But there’s no belch of black smoke and no leaden, oily fumes. In their place is an acrid smell, not unpleasant, but certainly not the typical diesel aroma.
(The success of the biodiesel fuel industry relies heavily on biodiesel testing <http://www.youtube.com/watch?v=s32Ke2VzrqU>, not only at the production level but at the consumer level, where degraded fuel may cause engine failures. Of major concern to diesel and biodiesel users is the very real possibility that water has contaminated their fuel. (See http://www.youtube.com/watch?v=0YcczdvPyAk). The potential catastrophic impact of this problem is discussed at length in this video at: http://www.youtube.com/watch?v=-lh4qhXc_5s&feature=youtube_gdata.
Fleet Fuel's family of inexpensive biodiesel test kits is just a click away on the internet at:
<http://fleetbiodiesel.com/biodiesel_testing_and_supplies.html>)
