BioDiesel B20
08-15-2021, 01:05 PM
#1
AudiWorld Junior Member
Thread Starter
BioDiesel B20
Anybody running BioDiesel B20 in there Audi A7 TDI in CA? Any issues with it? I recently pulled up to my local gas station to fill up and noticed all the pumps switch over to B20. So I hesitated to fill up out of caution and drove over to another gas station which still has Diesel #2. I'm sure it's probably fine, but wanted to check in here. Haven't reached out to my local Audi dealer yet, may do that this week.
08-15-2021, 05:09 PM
#2
I'm pretty sure the owners manual states to never put anything besides regular diesel into the fuel tank.
I don't think biodiesel will affect the engine negatively at all, but might negatively effect the emissions.
As you know, VW/Audi now are VERY particular about anything emissions related, so it would make sense for them to be strict about what fuel you use.
I think an occasional/emergency fill up of biodiesel should be ok, just don't make it a habit.
I don't think biodiesel will affect the engine negatively at all, but might negatively effect the emissions.
As you know, VW/Audi now are VERY particular about anything emissions related, so it would make sense for them to be strict about what fuel you use.
I think an occasional/emergency fill up of biodiesel should be ok, just don't make it a habit.
08-16-2021, 05:12 PM
#3
AudiWorld Member
Stick with VW/Audi recommendation.
Audi’s recommendation is not related to diesel-gate, e.g. see this https://www.cummins.com/engines/biodiesel-faqs
Audi’s recommendation is not related to diesel-gate, e.g. see this https://www.cummins.com/engines/biodiesel-faqs
08-17-2021, 09:10 PM
#4
AudiWorld Junior Member
Thread Starter
Heard back from my Audi dealer today. They said to use only Diesel #2. Luckily there's another gas station close by with Diesel #2, but it's ~10 cents more a gallon.
On a side note, I've been checking used A7 TDI prices nation wide and they actually have gone up a few thousand dollars from what they were like over a year ago. I know it's mostly a result of inflation, but it also seems there aren't too many out there to be had. Maybe time to sell?
On a side note, I've been checking used A7 TDI prices nation wide and they actually have gone up a few thousand dollars from what they were like over a year ago. I know it's mostly a result of inflation, but it also seems there aren't too many out there to be had. Maybe time to sell?
08-18-2021, 07:16 PM
#5
Heard back from my Audi dealer today. They said to use only Diesel #2. Luckily there's another gas station close by with Diesel #2, but it's ~10 cents more a gallon.
On a side note, I've been checking used A7 TDI prices nation wide and they actually have gone up a few thousand dollars from what they were like over a year ago. I know it's mostly a result of inflation, but it also seems there aren't too many out there to be had. Maybe time to sell?
On a side note, I've been checking used A7 TDI prices nation wide and they actually have gone up a few thousand dollars from what they were like over a year ago. I know it's mostly a result of inflation, but it also seems there aren't too many out there to be had. Maybe time to sell?
These Audi TDI engines are a rarity and that also contributes to their price. Even after used car prices settle down again, I predict the Audi TDI models will retain their value if not appreciate.
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