Parts for your 2008 Holden Commodore-Radiator

2008 Holden Commodore Radiator — what it does and how to look after it

Yes, a radiator is absolutely used on the 2008 Holden Commodore (VE series). This is confirmed by Holden’s VE Series Owner’s Handbook and Service Manual, GM Global Service Information, and Australian parts fitment catalogues from ACDelco and Natrad, all of which list a front‑mounted aluminium radiator for the VE V6 and V8. Most automatic variants also route the transmission cooler through the radiator end tank or pair it with an auxiliary cooler.

The radiator’s job is simple but crucial: it sheds the engine’s heat so the Commodore can run at the right temperature in Aussie and Kiwi conditions. Coolant carries heat from the engine to the radiator, air flow strips that heat away, and the thermostat and electric fans keep everything in the sweet spot. Get that balance wrong and you risk overheating, warped heads, or a cooked automatic transmission on autos with an integrated cooler.

As part of regular servicing, the radiator and cooling system deserve a proper once‑over. Use the correct long‑life OAT coolant that meets GM Dex‑Cool specifications (the red/orange stuff) and avoid mixing types. Top up only with premix or demineralised water and check the level at the surge tank when the engine is cold.

• Inspect for leaks, pink/white crust at the end tanks, damp spots on the core, or a sweet smell.
• Look over hoses, clamps, the radiator cap, and the thermostat housing, replace anything cracked, soft, or swollen.
• Make sure the fans kick in and that bugs and debris aren’t blocking airflow through the fins.
• On autos, keep an eye out for “strawberry milkshake” contamination (coolant mixing with trans fluid) and consider an auxiliary cooler if towing.

Coolant should be renewed at the interval in the handbook (commonly around five years or high kilometres for long‑life OAT), sooner if the fluid is discoloured, sludgy, or the car tows regularly. A professional pressure test and chemical block test are smart if there’s any hint of overheating or unexplained coolant loss.

When replacement time comes, choose a quality aluminium‑plastic unit that matches the exact VE engine and transmission. Flush the system thoroughly, fit new hoses and a cap if they’re aged, refill with the correct coolant, and bleed air properly (heater on hot, engine at idle until the fans cycle). Done right, the Commodore’s radiator will keep temps stable for years of easy motoring.

FAQs

What coolant should a 2008 Holden Commodore use?
Holden specifies an OAT long‑life coolant meeting GM Dex‑Cool requirements, typically red/orange. Don’t mix it with green or blue types. Use the correct premix ratio with demineralised water and stick to the service interval in the owner’s handbook.

How often should the radiator or coolant be replaced?
There’s no fixed “radiator replacement” interval, but coolant service is generally due about every five years or at high kilometres for long‑life OAT. Replace the radiator if there are leaks, corrosion, repeated overheating, or damaged fins/tanks. Heavy towing and harsh climates may justify shorter intervals.

Does the VE Commodore’s radiator include a transmission cooler?
Most automatic VE models use an in‑tank transmission cooler, and some have an auxiliary cooler as well. If you tow or drive in hot conditions, an additional external cooler can reduce transmission temps and extend fluid and component life.