This is an issue that came up on the radio this morning:
Person A lends their Porsche Cayenne diesel to Person B, who is moving. Person B is grateful, and wants to fill up the tank before returning the car. Then Person A drives the car later, but all goes bust because Person B put regular gas in the tank instead of diesel. $15k in damage, who pays?
Should Person A have specified, "hey my car is a diesel, just in case you want to refuel it," or should Person B have been smarter and looked at the badging on the rear of the car or the little note under the fuel door?