I didn’t notice the warning at the pump about B20 and to check the owner’s manual until after I had already completely filled the tank, I filled it 80% full with this stuff!
How is this going to affect the engine? I’m mentally preparing for the worst.
I’m also imagining: Should I siphon this out of my tank and put it into gas cans and advertise it for sale? It cost $105 🤦♀️😭 I’m imagining if I try to resell it for quite a bit less than that, I’d be helping someone out and they’d be helping me out to get rid of this. ☣️
So I’m just a hobbyist mechanic (with a technical background though), but I absolutely wouldn’t worry about this.
Of course you should follow the guidelines from the manufacturer, but this is very far from using super vs diesel, for example.
I would just drive with that tank, no questions or worry.
As I said, just an amateur opinion, though.