The best oil for a Chrysler 300 is a full-synthetic motor oil that meets Chrysler’s MS-6395 specification, typically 5W-20; 0W-20 can be acceptable in very cold climates or where your manual specifies it. Always follow the exact viscosity and spec listed for your model year.
Chrysler 300 models have spanned multiple engines and generations, most notably the 3.6L Pentastar V6 and various Hemi variants. While the specifics can vary by year, the guiding principle remains: use a high-quality synthetic oil that matches the manufacturer’s specification and the climate you drive in. The following guidance summarizes current, practical recommendations and how to apply them to your car.
Engine oil specs you should follow
Manufacturer standard
Key standard to verify on the oil bottle or in your manual is Mopar MS-6395, which covers gasoline engines in the Chrysler lineup (including the 300). Oils that meet this spec are typically labeled as MS-6395 and are designed to protect modern engines and emissions systems.
Viscosity notes and synthetic grade are also important; most 300s use a 5W-20 synthetic as the default, with 0W-20 acceptable in very cold climates or as specified by the manual.
Below are practical guidelines to help you choose the right oil.
- Oil that meets Chrysler MS-6395 specification (often labeled on the bottle as MS-6395 or Mopar-approved)
- Viscosity default: 5W-20 synthetic for most model years; 0W-20 can be used in cold climates or when specified
- Prefer full synthetic for better protection, fuel economy, and longer drain intervals
Following these specifications helps ensure proper lubrication, fuel efficiency, and warranty compliance across the vehicle’s service life.
Recommended oil viscosities by engine and climate
In general, the default guidance for the Chrysler 300 points to 5W-20 synthetic for normal operation, with 0W-20 as an alternative in very cold climates or when your manual allows it. In hotter climates or for heavy-duty driving, some model-year specifications may call for 5W-30 instead—always verify the exact requirement for your year and engine.
- 3.6L Pentastar V6 and typical 300 engines: 5W-20 synthetic (MS-6395) is commonly recommended; use 0W-20 if your manual specifies it for cold starts
- Hot climates or heavy-duty use: if your manual specifies, you may use 5W-30 synthetic; do not exceed the manufacturer’s stated viscosity
Always confirm the exact viscosity for your specific model year and engine in the owner's manual or with a Chrysler dealer. Using the wrong grade can affect lubrication, performance, and warranty coverage.
Brand and product recommendations
Choosing a reliable brand
Quality brands with full-synthetic oils that meet MS-6395 are widely available. Look for API SP (or higher) and ILSAC GF-6 certification on the bottle, and confirm MS-6395 compatibility on the label.
- Mobil 1 Full Synthetic 5W-20 (or 0W-20 where specified) — MS-6395
- Pennzoil Platinum Full Synthetic 5W-20 (MS-6395)
- Castrol EDGE Full Synthetic 5W-20 (MS-6395)
- Valvoline SynPower Full Synthetic 5W-20 (MS-6395)
Purchase from reputable retailers and always read the current product label to ensure it matches the MS-6395 specification for your vehicle.
Maintenance and changing intervals
Oil life monitoring and scheduling
Modern Chrysler 300 models equipped with oil life monitoring (OLM) can adjust change intervals based on driving conditions. In typical use, synthetic oil change intervals range from roughly 5,000 to 7,500 miles, though some owners extend toward 7,500–10,000 miles with favorable conditions and a healthy OLM. Severe conditions—towing, extreme heat, or high mileage—warrant shorter intervals.
Regular oil changes are essential to engine health, performance, and warranty compliance. Reset the oil life monitor after each service and keep service receipts as part of your vehicle’s maintenance records.
Conclusion
For most Chrysler 300 owners, the best oil is a full-synthetic 5W-20 that meets Mopar MS-6395, with 0W-20 as an alternative only if your manual allows it or you drive in extremely cold climates. Always verify your exact engine and year in the manual or with a dealer, choose a reputable brand, and adhere to a consistent change schedule for best results.
Summary: The Chrysler 300’s best oil is a full-synthetic oil that satisfies MS-6395, typically 5W-20; confirm viscosity and spec for your model year, and maintain regular oil changes with a trusted brand.