[F30lolz]

You need to go to the dealer ASAP, have them perform a fuel system cleaner to ‘cleanse’ the fuel system (fuel injectors/fuel pump/filter and gas tank) to remove the harmful deposits that was caused when said family inserted the meager fuel grade.

It is HIGHLY possible that the fuel pump relay and harness have been contaminated as well. However, that is the least of your worries. Are you sitting down Real Dodger?

The ‘Cadillac’ converter has now been compromised, along with the four (4) Lamba (aka oxygen/02 sensors) so those need to be replaced as well. Fuel door, which is located on the passenger side of the vehicle, needs to be replaced, along with new paint on the quarter panel. While you are in there, have the techs drain/refill the rear passenger side taillight fluid to save on labor.

Lastly, since fuel feeds through the accelerator pedal, that too needs to be replaced, along with the transmission shifter linkage.

GL.