I used to run it 50/50 in my Harley..Clean burning and really livened up the bike..
A gallon will make zero diff in your car...try 4 gallons in a 16 gallon mix..

1972 Road Runner / GTX 440 4spd Dana 3.54 Just about to turn 26K original miles..

A boat, a GMC truck, some Craftsman Tools, LOTS of Zombie Protection, and a few Goldfish..

If you love someone set them free..
If they come back it means nobody else wanted them either..!!