What kind of oil does a 350 TBI take?
Most 350 TBI engines use 5W-30 motor oil as the standard. In very hot climates or on higher-mileage engines, 10W-30 can be acceptable. Always verify the exact specification in your vehicle’s manual.
Oil type and viscosity guidance
Below are the typical oil viscosity options that work well with a 350 TBI (5.7L V8) engine. Choose the one recommended by your manual or a trusted mechanic based on climate and engine condition.
- 5W-30 conventional oil — the standard choice for most model years and climates.
- 10W-30 conventional oil — acceptable in hotter climates or if you’re experiencing startup or cold-start issues with 5W-30; confirm with manual.
- Synthetic 5W-30 or 10W-30 — offers enhanced protection and performance, especially in extreme temperatures or high-mileage engines. Ensure compatibility with your year/model.
In practice, many owners stick with 5W-30 for year-round use, unless local temperatures or engine wear suggest otherwise. If your vehicle is stock and in normal service, 5W-30 is typically sufficient.
Climate and mileage considerations
Climate and engine wear play a big role in oil choice. Cold climates favor lower viscosity for easier starts, while very hot environments may benefit from slightly thicker oil. High-mileage engines sometimes benefit from a high-mileage formula, still within the recommended viscosity range, to protect seals and reduce leaks.
Maintenance best practices
Follow the manufacturer’s recommended oil change interval, which for many older GM 5.7L TBI engines is roughly every 3,000–5,000 miles with conventional oil and up to 7,500–10,000 miles with newer synthetic blends, depending on driving conditions. Use a quality filter and avoid overfilling. If in doubt, consult a qualified mechanic.
Where to find the exact specification
Check the owner's manual, the under-hood oil fill cap, or the maintenance label in the glove box for the precise viscosity and API service category recommended for your exact year and configuration. If your engine has non-stock modifications, or if you’re unsure, seek guidance from a Chevrolet dealership or a trusted indie shop.
Summary
In most cases, a 350 TBI (5.7L V8 with throttle body injection) takes 5W-30 oil, with 10W-30 as an alternative in hot climates or high-mileage situations. Synthetic options are acceptable if they meet API standards. Always follow the vehicle’s manual for the exact specification and adjust based on climate and engine condition. Regular maintenance and using a quality filter are key to keeping the engine running smoothly.
How much oil does a 5.7 TBI take?
The oil capacity for a 5.7L TBI (Throttle Body Injection) engine is 5.1 quarts with a filter change, though some applications may vary slightly. Always consult your vehicle's owner's manual for the most accurate information, as variations can occur based on the specific year, model, and oil pan.
5.7 TBI oil capacity
- Standard capacity: 5.1 quarts with a filter change for many applications.
- Variations: Some older or specific models, like a 1987 V10, may have a different capacity, but 5 quarts is a common amount.
- Post-fill check: After refilling, always check the oil level on the dipstick to ensure it is at the correct mark.
What kind of oil does a TBI 350 take?
The recommended oil for a 350 TBI is 5W-30 or 10W-30, depending on the climate and specific engine recommendations. The preferred weight for all temperatures is 5W-30, but 10W-30 can be used in warmer climates. It is important to check your specific engine's owner's manual for the most accurate information.
Oil recommendations:
- Preferred weight: 5W-30 is the preferred weight for all temperatures.
- Alternative weight: 10W-30 is a suitable alternative, especially in warmer climates or for older engines that may have developed a leak with thinner oil.
- Conventional vs. synthetic: Both conventional and synthetic oils are acceptable. Many users report good results with either, but synthetic oils can offer better protection.
- High mileage oil: For older engines, a high-mileage synthetic blend can help with seals and reduce oil consumption.
- Additives: Some users add oil stabilizers like Lucas Oil Stabilizer to their oil, especially with 10W-30, to help with performance and seal longevity.
- Zinc content: Older engines may benefit from oil with a higher zinc content, which helps protect flat-tappet cams.
What to consider:
- Climate: Use 5W-30 for colder climates and consider 10W-30 or a high-mileage oil for warmer climates.
- Engine condition: If your engine is older or has high mileage, a high-mileage oil might be beneficial.
- Leakage: If you notice oil leaks, a slightly thicker oil like 10W-30 might be a good temporary solution, but it's still best to address the leak.
What kind of oil does a 1990 5.7 take?
SAE 5W-30
5W-30 (All TEMPS) - SAE 5W-30 is preferred. Capacity: 5 quarts (with filter).
What type of oil does a Big Bear 350 take?
The Yamaha Big Bear 350 requires a 10W-40 four-stroke engine oil, preferably a high-quality, wet-clutch compatible oil like Yamalube. Always replace the oil filter when changing the oil to ensure the best protection and performance for your ATV.
Oil and maintenance details
- Oil type: 10W-40 four-stroke engine oil.
- Compatibility: Look for oil that meets JASO MA/MA2 standards, as this indicates wet-clutch compatibility, which is necessary for ATVs with a shared engine/transmission.
- Brand examples: Yamalube, AMSOIL, and Putoline are all mentioned as compatible brands.
- Oil filter: Always replace the oil filter during an oil change to prevent contaminants from recirculating.
- Oil capacity: The exact capacity can vary slightly by model year, but it is approximately 2.1 to 3.17 quarts for a service fill. The owner's manual will provide the most accurate capacity for your specific year.
- Differential fluid: For the front and rear differentials, use a quality 80W-90 gear oil.
