Holden Premier, HQ

Additional Notes

• Across all listed configurations of the Holden Premier and HQ, the rear differential fluid capacity is specified at 1.42 liters, a figure that applies uniformly whether the unit is a standard open differential or a limited slip differential.
• The 1.42-liter figure represents a service fill capacity, meaning the amount of fluid required to bring the differential to its correct operating level during routine maintenance rather than a full overhaul or dry-build quantity.
• The check interval for rear differential fluid across all configurations is set at every 10,000 km or 6 months, whichever comes first, under normal use conditions.
• A time-based threshold of 6 months runs alongside the distance-based 10,000 km interval, meaning low-mileage operation does not extend the service period beyond half a year.
• The Holden Premier HQ carries three distinct engine designations in the specifications: the 202, the 253, and the 308, all sharing the same 1.42-liter differential capacity and identical check intervals across the 1971-1974 model years.
• Each engine variant appears in both HC and LC compression configurations, and in every case the rear differential fluid capacity and service interval remain unchanged at 1.42 liters and 10,000 km or 6 months under normal use.
• The limited slip differential variant is listed separately from the standard rear differential for each engine and compression configuration, yet the capacity of 1.42 liters and the 10,000 km or 6-month check schedule are identical between the two differential types across all rows.