Old cars often don't get driven that often and if you have a diesel it does not burn much fuel, so you could end up with the same fuel in the tank for more than a year! This is what could happen.
Why You Should Not Leave Diesel Fuel in Your Tank for Long Periods
Old cars often don't get driven that often and if you have a diesel it does not burn much fuel, so you could end up with the same fuel in the tank for...