What oil should be used for a 1.5 naturally aspirated engine?

[SanBrandon]

1.5-liter naturally aspirated engines can use 5W30 or 0W30 oil. There is no need to use higher viscosity oil for such car engines. Function of engine oil: Engine oil is known as the blood of the engine. Inside the engine, it not only lubricates but also cleans, seals, buffers, prevents rust, and dissipates heat. Function of the oil filter: It is essential to replace the oil filter along with the oil. The oil filter is used to filter the oil. Without an oil filter, the oil would become very dirty after some use, which would affect its normal lubrication. When purchasing engine oil and oil filters, always buy genuine products from official channels.

[McRonan]

As an experienced driver who has driven 1.5L naturally aspirated cars for years, I believe choosing engine oil depends on viscosity and standards. I recommend using full synthetic 5W-30 oil—it offers good fluidity without being too thin, suitable for most weather conditions. It maintains stable viscosity in summer heat and provides quick lubrication during cold winter starts, reducing engine wear. Brands like Shell or Mobil are reliable, but the key is selecting API SP-certified oil to ensure strong cleaning and oxidation resistance. Always check your owner's manual for recommended viscosity and grade—don’t arbitrarily change specifications to prolong engine life. Naturally aspirated engines aren’t as delicate as turbocharged ones, but using quality oil and changing it every 8,000–10,000 km improves fuel efficiency and protects components, avoiding cylinder scoring risks. Long-term use results in quieter engine operation and peace of mind.

[MacCarter]

I've been driving a 1.5L naturally aspirated compact car for years, and young people nowadays pay more attention to efficiency and environmental protection. It's recommended to choose API-certified full synthetic oil, with viscosity grades of 5W-30 or 0W-30 for quick cold starts (reducing startup wear) while providing sufficient high-temperature protection. This specification ensures energy efficiency and noise reduction, making it suitable for daily commutes or occasional highway driving. Synthetic oil offers better cleaning performance than mineral oil, reducing carbon buildup and protecting core engine components. Recommended brands include Castrol or Total certified products for good cost-performance ratio. Don't neglect seasonal changes - use lower viscosity in winter and standard viscosity in summer. Check the dipstick regularly to ensure proper oil level, and change the oil every six months or 10,000 kilometers. Developing these good habits will keep your car running smoothly, save on repair costs, and align with the green transportation trend.

[DeGenesis]

Having been a car mechanic for a lifetime, I recommend practicality first for 1.5L naturally aspirated engines. Mineral or semi-synthetic oil is sufficient for daily use—for example, 5W-30 viscosity offers balanced wear resistance, but the key is to follow the SAE grade specified in the manual and avoid exceeding or misusing it. The engine's simple structure doesn't demand high oil quality, but regular oil changes every 8,000 kilometers are essential to prevent sludge and aging. Opt for genuine brands like Great Wall to avoid counterfeit products damaging the engine. Check the oil quality—if it turns black or becomes thin, replace it early. The key to maintenance lies in regularity.