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can you put any motor oil in a car

2 Answers
DanteMarie
12/20/25 8:01pm

No, you absolutely cannot use any motor oil in a car. Using the wrong oil can lead to reduced engine performance, poor fuel economy, and even severe, costly damage over time. The correct oil is specified by your vehicle's manufacturer based on exacting engineering requirements for viscosity, additives, and performance standards.

Your car's engine is designed to operate with oil that has a specific viscosity grade (e.g., 5W-30). Viscosity refers to the oil's resistance to flow. The "W" stands for winter, indicating how the oil flows in cold temperatures, while the second number indicates its viscosity at high operating temperatures. Using a thicker or thinner oil than recommended can affect lubrication and protection.

Furthermore, oils must meet specific industry service categories set by organizations like the American Petroleum Institute (API). The "starburst" symbol on a bottle certifies it meets current engine protection standards. Using an oil that doesn't meet the required API "SN Plus" or "SP" level for modern engines, for instance, can fail to protect against issues like low-speed pre-ignition in turbocharged engines.

Key FactorWhy It MattersExample/Standard
Viscosity GradeDetermines flow at different temperatures; critical for lubrication.0W-20, 5W-30, 10W-40
API Service CategoryCertifies performance standards for engine protection.API SP (Current Standard)
Synthetic vs. ConventionalSynthetic offers superior protection, longevity, and performance in extremes.Full Synthetic, Synthetic Blend
OEM SpecificationSome manufacturers have their own strict standards beyond API.GM dexos1, Ford WSS-M2C946-B1
High-Mileage FormulationsContains additives to condition older seals and reduce oil consumption.For vehicles over 75,000 miles

Always consult your owner’s manual. It will list the exact viscosity grade and performance standards required. If you’re unsure, a quick call to a dealership parts department can provide the definitive answer. The few dollars you might save by using the wrong oil are insignificant compared to the risk of a several-thousand-dollar engine repair.

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StCarmen
12/28/25 9:58pm

Nope, it's a surefire way to hurt your engine. Think of motor oil like a prescription—your car’s manufacturer specifies exactly what it needs. I just grab what the manual says, usually something like 5W-30 full synthetic. It’s not worth guessing. Throwing in the wrong stuff can gum things up or lead to worse wear and tear. I stick to the book to keep my car running smoothly for the long haul.

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