Owners servicing a Chrysler Royal AP1 should ensure the correct engine oil capacity and lubricant types are used to maintain proper engine protection and reliability.
The Chrysler Royal AP1, introduced in Australia during 1957, was available with both six-cylinder engines and V8 engines, and regular lubrication was considered essential for long service life.
According to the factory lubrication specifications, the engine oil capacities are approximately:
Engine Oil Capacities (excluding oil filter)
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230/250 CID Six-cylinder engine: approximately 7 imperial pints (about 4.0 litres)
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303 V8 engine: approximately 8 imperial pints (about 4.5 litres)
These figures refer to the crankcase refill capacity and may vary slightly depending on oil filter replacement and engine condition.
The lubrication system on Chrysler engines was designed to supply pressurised oil to critical internal components such as the crankshaft bearings and camshaft bearings. This system ensures proper lubrication during normal driving conditions and helps maintain engine durability over long periods of operation.
Recommended Engine Oil
The factory recommended different oil grades depending on operating temperature:
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SAE 30 – general summer use
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SAE 20W – cooler winter climates
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SAE 10W – extremely cold conditions
These lighter viscosity oils were recommended because the small clearances in modern engines required oil that could flow quickly into tight lubrication passages.
Oil Change Intervals
The Chrysler lubrication schedule recommended:
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6-cylinder engines: oil change every 2,000 miles
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V8 engines: oil change every 5,000 miles
More frequent oil changes may be required when operating the vehicle in dusty environments or severe driving conditions.
Replacing the oil filter at regular intervals is also recommended to maintain clean oil circulation through the engine.
Other Important Fluid Checks
Routine servicing of the Chrysler Royal should also include checking and maintaining the following fluids:
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Transmission lubricant
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Rear axle gear oil
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Power steering fluid (if fitted)
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Brake fluid
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Engine coolant
Maintaining correct fluid levels and using suitable lubricants helps reduce wear and ensures reliable operation of the vehicle.
For complete servicing procedures, lubrication charts, and maintenance schedules, refer to the Chrysler Royal workshop manual available from Car Manuals Direct.
