LouSiana wrote on 10/01/12 at 14:05:35:I attached a small combination lock on the brake line.
When I buy fuel, I adjust the lock to the kilometers from the speedo.
Then later just use my brain abt. 2 seconds and see when it's time to fuel up again. Should work with miles, too, I guess and it needs no blinkenlights, no poppencorken and no blowenfusen
Remember the KISS-Principle? Keep it stupid simple.
Even easier, and cheaper, is when you fill up, use a grease pencil (sometimes called a china marker) to write the current miles on the odo +100 onto the mirror. when the miles on the odo get close to the miles on the mirror, look for a gas station. Easy to see, and you don't have to do any math.