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Q:

DIRT ON BATTERY on 1991 Mazda Protege

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
TODAY, I SAW DIRT ON POSITIVE CONNECTION, ON BATTERY, THE CAR RUNS WELL,I WANT TO KNOW WHERE COULD THE RESIDUE COME FROM?
ANITA
(1) Answer
This is called corrosion buildup from the battery acid, this will cause resistance in circuit and may lead to car not starting, needs cable end removed from battery and cleaned and then reinstalled with good clean connection and retension.