RAM 1500 2020 Owner's Manual page 358

356 SERVICING AND MAINTENANCE
Change the oil and filter.
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Rotate the tires. Rotate at the first sign of irregular wear, even if it occurs before the oil indicator system turns on.
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Inspect the battery and clean and tighten terminals as required.
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Inspect the CV/Universal joints.
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Inspect the brake pads, shoes, rotors, drums, and hoses.
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Inspect the engine cooling system protection and hoses.
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Inspect the exhaust system.
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Inspect the engine air cleaner if using in dusty or off-road conditions.
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Inspect and replace the Evaporative System Fresh Air Filter as necessary, replacement may be more frequent if vehicle is operated in extreme dusty

conditions.
NOTE:
Using white lithium grease, lubricate the door hinge roller pivot joints twice a year to prevent premature wear.
At Every Oil Change Interval As Indicated By Oil Change Indicator System: