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Home >> Oldsmobile >> 1990 >> Custom Cruiser >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Servicing - A/T >> Lubrication >> Service Intervals

Service Intervals

Check transmission fluid level at every engine oil change. Transmission fluid should be changed and filter replaced every 100,000 miles under normal operating conditions.

Under continuous extreme operating conditions (trailer towing, heavy city traffic with ambient temperature over 90°F/32°C or delivery service), fluid and filter should be changed every 15,000 miles.