Pontiac G8 Engine Oil Specs
Engine oil type, capacity & service interval for the Pontiac G8 (2008–2009). Select your year below for full specifications.
Choose G8 year
Oil grade changes by year
Do not assume every Pontiac G8 year uses the same oil. Some years specify 5W-30 (years 2009) while others specify 10W-30 (years 2008). Select your exact year and engine configuration before buying oil.
Select Year – Pontiac G8 Engine Oil
2 years foundPontiac G8 Engine Oil Specs by Year
All 2 yearsPontiac G8 Engine Oil Guide
The Pontiac G8 was produced from 2008 to 2009. This model typically uses 5W-30 full synthetic engine oil — a specification common to most Pontiac G8-series vehicles.
Selecting the correct oil viscosity for your Pontiac G8 is essential. Using a grade that is too thin reduces protection at operating temperature, while too thick an oil impairs cold-start flow and reduces fuel economy. Always match the exact grade shown for your specific model year.
The recommended oil change interval for the Pontiac G8 is every 7,500 miles or 12 months. Under severe driving conditions — track use, towing, or frequent cold starts — shorten this interval by 25–30%.
When servicing your Pontiac G8, always replace the oil filter at every oil change. Using a quality filter — such as Fram, Mobil 1, or OEM equivalent filters — ensures clean oil circulation through the engine block.
Oil change costs for the Pontiac G8 at a US dealership or local service center typically range from $60 to $110 for a standard synthetic blend or full synthetic service. DIY oil changes cost approximately $30–$65 in parts (oil + filter) and take about 30 minutes with the right tools.
Always consult your vehicle's owner's manual to confirm the exact specification for your specific trim and engine variant, as some Pontiac G8 configurations may have different requirements.
Always use the viscosity grade recommended in your vehicle's owner's manual to ensure proper lubrication and maintain warranty coverage.
Perform periodic dipstick checks to ensure proper oil levels, especially prior to long road trips or heavy load use.