high cetane vs b20

funkshun

Active member
Joined
Jun 8, 2006
Location
Taos, NM
TDI
2003 Jetta GLS TDI Wagon, Indigo Blue, 5-speed
I have been using B20 for a few months and initially I was getting a lot of black smoke when starting the engine for the first time of the day. I was previously using a BP premium diesel with a high cetane rating, and never noticed any smoke. I still see the smoke occasionally when accelerating fast, but not every day.

Do you think that perhaps the higher cetane dino is cleaner then the b20 mixed with 80% dirtier diesel or that the b20 was cleaing out the engine?

curious...
tom
 
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