I refill my tank when my trip odometer reaches 200 miles. The fuel gauge in my 1992 Volvo station wagon has worked approximately 1 day a year for each of the last 10 years. 200 miles is a safe amount... I could likely go further but this approach means I am refilling at about 1/4 of a tank and that I don't run out of gas.
(no subject)
Date: 2011-03-08 04:00 am (UTC)