These instructions apply to the Dodge Magnum Mk1 (LX) 2005-2008.
For other models, please choose your vehicle here.
A verified reference for the fluids, capacities and spark-plug specifications of the Dodge Magnum (LX, 2005–2008) wagon, across its engines — the 2.7 L and 3.5 L V6s, the 5.7 L HEMI V8 and the 6.1 L SRT8. Figures are the factory data; always confirm against the label under your bonnet and the tyre placard in the door opening.
Engine Oil — Grade and Capacity
The three engines do not all take the same grade — the 3.5 L V6 is the odd one out.
| Engine | Oil grade | Capacity (with filter) |
|---|---|---|
| 2.7 L V6 | SAE 5W-20 (API certified) | 6.0 qt / 5.7 L |
| 3.5 L V6 | SAE 10W-30 (API certified) | 6.0 qt / 5.7 L |
| 5.7 L HEMI V8 | SAE 5W-20 (API certified) | 7.0 qt / 6.6 L |
Oil must meet DaimlerChrysler standard MS-6395, and the change interval should never exceed 6,000 miles (10,000 km) or 6 months. Reset the reminder after each change with our Magnum oil-change reminder reset guide.
International markets: outside North America these V6s are specified SAE 5W-30 (both the 2.7 L and the 3.5 L); the 5.7 L HEMI stays 5W-20 everywhere. Follow the grade on your own oil-filler cap and handbook.
Coolant — Type and Capacity
All engines use Mopar Antifreeze/Coolant 5 Year/100,000 Mile Formula (or equivalent). Figures include the heater and the recovery bottle filled to MAX.
| Engine | Cooling-system capacity |
|---|---|
| 2.7 L V6 | 9.9 qt / 9.4 L |
| 3.5 L V6 (without AWD) | 11.1 qt / 10.5 L |
| 3.5 L V6 (with AWD) | 11.4 qt / 10.8 L |
| 5.7 L HEMI V8 | 14.7 qt / 13.9 L |
| 5.7 L with Severe Duty II cooling | 15.1 qt / 14.3 L |
Fuel Tank
| Engine | Fuel capacity |
|---|---|
| 2.7 L V6 | 18 gal / 68 L |
| 3.5 L V6 (without AWD) | 18 gal / 68 L |
| 3.5 L V6 (with AWD) | 19 gal / 72 L |
| 5.7 L HEMI V8 | 19 gal / 72 L |
Spark Plugs — Type, Gap and Torque
Each engine takes a different plug and gap; do not carry one engine’s spec over to another.
| Engine | Plug type | Electrode gap | Torque |
|---|---|---|---|
| 2.7 L V6 | RE10PMC5 | 0.048–0.058 in | 17 N·m (12.5 ft·lb) |
| 3.5 L V6 | ZFR5LP-13G | 0.048–0.058 in | 28 N·m (20 ft·lb) |
| 5.7 L HEMI V8 | Champion RE14MCC4 | 1.14 mm (0.045 in) | To spec — tapered seat, do not over-tighten |
| 6.1 L HEMI V8 (SRT8) | NGK PLZTR5A-13 | 1.3 mm (0.050 in) | 15–20 N·m (11–15 ft·lb), max 15 ft·lb |
The HEMI plugs use a tapered seat — over-tightening distorts them and changes the gap. Start every plug by hand to avoid cross-threading the aluminium heads; the V6 platinum plugs are a long-life item.
A Note on Service Intervals
These are North American figures. The service schedule (interval mileages) varies by market and duty cycle — the US manual lists a normal and a severe schedule — so follow the maintenance schedule in your own handbook for your market and use.
Frequently Asked Questions
Does the 3.5 L V6 Magnum use different oil? Yes — the 3.5 L takes 10W-30, while the 2.7 L V6 and 5.7 L HEMI V8 use 5W-20.
What coolant goes in a Magnum? Mopar Antifreeze/Coolant 5 Year/100,000 Mile Formula (HOAT) or an equivalent to the same spec — don’t top up with ordinary green coolant.
What plugs does the Magnum SRT8 take? The 6.1 L uses NGK PLZTR5A-13 gapped to 1.3 mm (0.050 in); torque 11–15 ft·lb and never beyond 15.
How much oil for the 5.7 HEMI Magnum? 7.0 qt (6.6 L) with a new filter, SAE 5W-20.
Need to look up a warning light or trouble code on your Magnum? Our sister site autodtcs.com lists diagnostic trouble codes.
Independent guide — not affiliated with Dodge. Always follow your official service manual and safety precautions. Read our full disclaimer.