2020 Santa Fe Limited 2.0T Awd
I was using 91 with my last 3 tanks of gas.I have heard that using 91 octane instead of 87 can reduce the amount of fuel dilution in the winter time.
Not tried myself.
Last year I bought an Amazon fluid pump, to get out 2 quarts every 2 months during the winter. And pour in 2 fresh quarts.
Not a great solution but neither is having this theta 2 pos Granding during a summer road trip.