The 2008 Mazda3 uses different oils depending on the engine: the 2.0-liter variant typically requires 5W-20, while the 2.3-liter variant generally uses 5W-30. Always verify the exact specification in the owner's manual or on the oil fill cap.
Oil requirements by engine
The 2008 Mazda3 offered two gasoline engines, each with its own oil recommendation. The following summarizes the standard choices.
- 2.0-liter MZR-FE engine: Recommended viscosity is 5W-20 as standard; 5W-30 is acceptable in certain climates or if 5W-20 is unavailable. Oils should meet API SN (or newer) and ILSAC GF-4/5 standards. Oil capacity is roughly 4.5–5 quarts (with filter).
- 2.3-liter engine: Recommended viscosity is 5W-30; oils should meet API SN (or newer) and ILSAC GF-4/5 standards. Oil capacity is roughly 4.8–5 quarts (with filter).
In short, the 2.0L uses 5W-20 as the baseline, while the 2.3L uses 5W-30. Always confirm with the owner’s manual or your dealer to account for regional specs and any updates.
2.0-liter MZR-FE engine specifics
The 2.0-liter MZR-FE is commonly found in the base Mazda3 trim. Use 5W-20 oil as the standard recommendation, ensuring the oil meets API SN or newer and ILSAC GF-4/5 requirements. Plan for about 4.5 quarts of oil plus a filter, with typical change intervals around 5,000–7,500 miles depending on driving conditions.
2.3-liter engine specifics
The 2.3-liter engine uses 5W-30 oil as its standard recommendation, with the same API/ILSAC requirements. Oil capacity is roughly 4.8–5 quarts with a filter, and maintenance intervals mirror those of the 2.0L under normal driving conditions.
Summary
For the 2008 Mazda3, choose 5W-20 oil for the 2.0L engine and 5W-30 oil for the 2.3L engine, ensuring the oil meets API SN or newer and ILSAC GF-4/5 standards. Confirm exact specifications in your owner's manual, and follow the recommended maintenance intervals for best engine health. If in doubt, consult a Mazda service professional.