I made a really stupid mistake earlier tonight. I was at a gas station refueling my 2009 Nissan Altima (2.5L 4-cylinder engine). I stupidly selected the only option that was available at the pump which was biodiesel fuel. Before I filled up the car, it had about a quarter tank of unleaded gas left. I filled it up to about 3/4 of a tank with the biodiesel fuel. So now the car has 1/4 unleaded fuel and maybe 1/2 tank of biodiesel fuel. I drove the car for a total of maybe 20 minutes between the time I left the station and when I got home. After 5-10 minutes of driving my car started acting a little weird and thought at first it was something else. Then later I realized I put the wrong type of fuel in the car! Ugh!
There is a gas station just down the street from where I am (a 5 minute drive at the most). I was able to drive around without too much trouble before I came home but it did start acting weird. I read that if you top it off with unleaded fuel then it should "dilute" the diesel fuel. As I keep driving, I should keep topping it off with more unleaded fuel. I still have a little more than a quarter tank to fill the car with right now. Is this even a viable option at this point? I have a AAA membership but they told me that all they will cover is the cost of towing the car to a repair shop and then will probably be paying at least $500 in repairs if not more (from what I've read). What are my options at this point? Thanks!