Scheduled Maintenance Charts - Plymouth Gran Fury 1980 Operating Instructions And Product Information

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Scheduled Maintenance
ENGINE OIL REQUIREMENTS
Change Engine Oil (Schedule A & B)
Regular oil changes are required for proper engine operation.
Change oil every 12 months or at 7,500 mile (12 000 km) intervals,
whichever comes first.
Change oil every 3 months or 3,000 miles (4 800 km), whichever
occurs first, if the vehicle is driven under any of the following
operating conditions:
• Frequent driving in dusty conditions.
• Frequent trailer pulling.
• Extensive idling.
• Frequent short trip driving, less than 10 miles (16 km), at
temperatures below + 10°F ( -12°C).
• More than 50% operation at sustained speeds over 70 mph (112
km/h) during hot weather (ab ove +90°F; +32°C).
When To Add Oil
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"ADD OIL" MARK
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/~
~" " F ULL"
MARK
Fleet Service (police and limousine)
Police and limousine vehicles used principally for highway ser-
vice (police highway patrol operation or limousine service of 25
miles (40 km) or more between stations), should have the oil
changed every 6 months or 5,000 miles (8 000 km), whichever
occurs first.