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I noticed a sign at the gas station that I always buy diesel for my 2018 Colorado Zr2 and today it said D20 (or B20 I forgot) Renwable Disel. So, the quesion I have should I avoid this type of diesel and try to find petroleiun based disel? I am in Southern CA so am not worried about winter issues. Thanks
 

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I noticed a sign at the gas station that I always buy diesel for my 2018 Colorado Zr2 and today it said D20 (or B20 I forgot) Renwable Disel. So, the quesion I have should I avoid this type of diesel and try to find petroleiun based disel? I am in Southern CA so am not worried about winter issues. Thanks
It would have been "B20" and that's not a bad thing to run. Bio-diesel has much better lubricity content then regular low sulfur does. The owners manual says up to 20% Bio is ok to run.
 

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Have used B20 and even B100 on my '18 LWN, '05 LLY, '09 LMM, '16 LML, and even my little '14 Cruze TD for years. The '05 didn't have the emissions equip but as long as you're not using it in sub-freezing weather, bio-diesel has never been an issue for me.
 

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Keep in mind that biodiesel is also a much better solvent than #2 and will clean up your fuel system, especially B100. Especially if you have a high mileage vehicle and/or or a dirty tank for some reason be prepared with a new fuel filter. $0.02. I've put over 40k on my 2000 Power Stroke running B100 and waste vegetable oil.
 
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