If the backup Mercedes Diesel always starts, drive that and get rid of the other one.

Alternatively, get a backup like a Dodge Caravan so you're incented to keep your Mercedes Diesel reliable.

Sixto
87 300D

pontiac aztek ? (probably cheap, too)

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"The law, in its majestic equality, forbids the rich as well as the poor to sleep under bridges, to beg in the streets, and to steal bread."