Considering the car is under warranty I would only run what the manual says you can, until it expires. Because if you have a major fuel system problem, and the dealer suspect that you run biodiesel you will be SOL. It wouldn't take much for them to send a sample of your fuel to the lab and see it come back as B20 or B100. Then say by, by to any warranty.

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2016 Corvette Stingray 2LT
1969 280SE
2023 Ram 1500
2007 Tiara 3200