Mercury Mariner 4WD Engine Oil Specs
Engine oil type, capacity & service interval for the Mercury Mariner 4WD (2005–2011). Select your year below for full specifications.
Choose Mariner 4WD year
Oil grade changes by year
Do not assume every Mercury Mariner 4WD year uses the same oil. Some years specify 5W-30 (years 2011, 2010, 2009, 2007, 2006, 2005) while others specify 5W-20 (years 2008). Select your exact year and engine configuration before buying oil.
Select Year – Mercury Mariner 4WD Engine Oil
7 years foundMercury Mariner 4WD Engine Oil Specs by Year
All 7 years| Year | Engine | Oil Grade | Capacity | Interval | |
|---|---|---|---|---|---|
| 2011 | 2.5L 4-Cylinder | 5W-30 | 4.7 qt | 5,000 mi | View → |
| 2010 | 2.5L 4-Cylinder | 5W-30 | 4.7 qt | 5,000 mi | View → |
| 2009 | 3L 6-Cylinder | 5W-30 | 5.0 qt | 5,000 mi | View → |
| 2008 | 3L 6-Cylinder | 5W-20 | 4.6 qt | 5,000 mi | View → |
| 2007 | 3L 6-Cylinder | 5W-30 | 5.5 qt | 5,000 mi | View → |
| 2006 | 3L 6-Cylinder | 5W-30 | 5.5 qt | 5,000 mi | View → |
| 2005 | 3L 6-Cylinder | 5W-30 | 5.5 qt | 5,000 mi | View → |
Mercury Mariner 4WD Engine Oil Guide
The Mercury Mariner 4WD was produced from 2005 to 2011. This model typically uses 5W-30 full synthetic engine oil — a specification common to most Mercury Mar-series vehicles.
Selecting the correct oil viscosity for your Mercury Mariner 4WD 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 Mercury Mariner 4WD is every 5,000 miles or 6 months. Under severe driving conditions — track use, towing, or frequent cold starts — shorten this interval by 25–30%.
When servicing your Mercury Mariner 4WD, 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 Mercury Mariner 4WD 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 Mercury Mariner 4WD 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.