What kind of oil does a Chevy Optra take?
The Optra generally uses a synthetic or synthetic-blend engine oil in the range of 5W-30 to 5W-40, with the exact specification (Dexos1 for gasoline engines, Dexos2 for diesel) and viscosity tied to the engine variant and market. Always confirm with the owner's manual or the under-hood label for your specific model and year.
Oil specifications by engine type
Petrol engines
Petrol Optra models typically require a modern API- or Dexos-certified oil. The exact viscosity depends on climate and the engine variant, but common choices are 5W-30 or 5W-40. Use an oil that is synthetic or a high-quality synthetic blend, and aim for a specification approved by GM/Dexos if your engine supports it.
- Viscosity: 5W-30 or 5W-40, chosen based on climate and manual guidance.
- Specification: Dexos1 Gen 1 or Gen 2 is preferred for gasoline engines; if Dexos isn’t listed, an API SN/SM oil with GF-5 may be acceptable per the manual.
- Oil type: Synthetic or synthetic-blend oil is recommended; full synthetic is often preferred for longer drain intervals.
- Drain interval: Typically around 5,000–10,000 miles (8,000–16,000 km) or as specified in the owner’s manual, with more frequent changes under severe driving conditions.
Always follow the exact grade and specification noted in your manual, as regional variants and model years can differ.
Diesel engines
Diesel Optra variants (where available in your market) usually require oils meeting Dexos2 or, in older markets, API CI-4/CG-4 specifications. The common target viscosity tends to be 5W-40, though some climates or engines may specify 5W-30. Verify the exact requirement for your engine.
- Viscosity: 5W-40 is common for diesel engines; 5W-30 may be used in certain climates or older specifications.
- Specification: Dexos2 is typically preferred for GM diesel engines; check whether Dexos2 or an older API specification applies to your year.
- Oil type: Synthetic or synthetic-blend Dexos2 oils are standard options.
- Drain interval: Often 7,500–10,000 miles (12,000–16,000 km) or as advised by the manual; severe driving can shorten this interval.
Because diesel oil requirements can vary by year and market, rely on the official documentation for your exact Optra variant.
How to confirm the exact oil your Optra needs
Given the variation across years and regions, the most reliable approach is to verify with the official documentation or a Chevrolet service professional. Here are practical steps to determine the correct oil for your car.
- Check the owner’s manual section on lubrication for the recommended viscosity and specification.
- Inspect the oil filler cap or the under-hood certification label for Dexos1 or Dexos2 requirements and the suggested viscosity.
- Identify your engine variant and year, then cross-check the recommended oil with GM’s Dexos specifications for that combination.
- When in doubt, consult a Chevrolet dealer or a qualified mechanic who can confirm the exact specification for your VIN.
Using the wrong oil can affect engine wear and performance, so confirming the precise specification is worth the extra step.
Summary
In short, the Chevy Optra’s oil needs are driven by engine type and market. Most petrol Optras use 5W-30 or 5W-40 synthetic oils meeting Dexos1, while diesel variants commonly require Dexos2 oils (often 5W-40). Always verify with the owner’s manual or a Chevrolet service professional to ensure you’re using the correct grade and specification for your specific model and climate.
