The 5.7 L (350) Chevy typically uses 5W-30 engine oil, with the exact specification depending on the vehicle’s model year. For many newer GM engines, the oil must meet the Dexos specification (Gen 1 or Gen 2, depending on the year). Always check your owner's manual or the under-hood oil-fill label to confirm the exact requirement for your vehicle.
Understanding the 5.7L 350 oil needs
The 5.7L V8 has powered a wide range of GM trucks, SUVs, and performance cars across several generations. GM’s Dexos oil standard began appearing in the 2010s, and the recommended oil specification has varied with year and model. The following guidelines reflect common practice by era; always verify the exact spec for your specific vehicle.
Guidelines by era help you identify the likely oil specification, but the definitive source is your owner's manual or the information on the oil cap/receipt from the dealer.
- Pre-2010 models: Typically use conventional 5W-30 or 10W-30 motor oil. There is usually no Dexos requirement for these older engines, though some vehicles may list a newer specification if they’ve been updated; always follow the manual’s guidance.
- 2010–2014 models: Dexos1 Gen 1 compatible 5W-30 is common. You can use synthetic-blend or full-synthetic versions, with synthetic favored for towing, heavy service, or extreme driving conditions.
- 2015–present models: Dexos1 Gen 2 compatible 5W-30 is typical. Many owners run full synthetic 5W-30, especially in demanding use or with modern emission control systems. Always verify the exact Dexos requirement for your vehicle.
Bottom line: Dexos certification is a key consideration for recent GM 5.7L engines. If your manual or fill-cap specifies Dexos, use a Dexos-certified oil (Gen 1 or Gen 2 as required). If Dexos isn’t listed, you can use a high-quality API SN/SN+ or ILSAC GF-5 oil with the correct viscosity, but verify warranty and manufacturer guidance.
Oil capacity and change intervals
Knowing how much oil your engine holds and how often to change it helps ensure proper lubrication and longevity. The numbers below are typical guidance but can vary by exact engine configuration and model year.
- Oil capacity: Approximately 6 quarts (about 5.7 liters) with a filter; some configurations may vary slightly. Always confirm exact capacity from the service data plate or owner's manual.
- Oil change intervals: Conventional oil is commonly changed around 3,000–5,000 miles; synthetic or synthetic-blend oils often support 5,000–7,500 miles, depending on driving conditions and OEM recommendations. Severe service (towing, frequent short trips, or extreme temperatures) may shorten these intervals.
Note: If you’re unsure which Dexos version your vehicle requires, or if you’re using a non-GM aftermarket oil, consult your dealer or a qualified mechanic to avoid warranty or protection issues.
Summary
In most cases, a 5.7 L 350 Chevy takes 5W-30 motor oil, with the Dexos specification depending on the year: pre-Dexos-era engines may use conventional 5W-30 or 10W-30, while 2010s models typically require Dexos1 Gen 1 or Dexos1 Gen 2 with 5W-30. Always verify the exact specification for your vehicle in the owner's manual or on the under-hood label, and follow the recommended oil capacity and change intervals to keep your engine in peak condition.