1. Viscosity. The viscosity of oil is measured in SAE grades, and the higher the number, the thicker the oil. For four-wheelers, you'll want to use an oil with a viscosity of 10W-40 or 15W-40.
2. API rating. The API rating of oil indicates the level of performance that it meets. For four-wheelers, you'll want to use an oil that meets the API SL or SM specification.
3. JASO rating. The JASO rating of oil indicates the level of performance that it meets for use in motorcycles. For four-wheelers, you'll want to use an oil that meets the JASO MA or MA2 specification.
If you're not sure what type of oil to use in your four-wheeler, consult the owner's manual.
Here are some specific recommendations for car oil that you can use in your four-wheeler:
* Valvoline VR1 Racing 10W-40 Motor Oil: This oil is specifically designed for high-performance engines, and it meets the API SL and JASO MA specifications.
* Mobil 1 15W-40 High-Mileage Motor Oil: This oil is ideal for older four-wheelers with higher mileage. It meets the API SM and JASO MA2 specifications.
* Castrol GTX 10W-40 Motor Oil: This oil is a good all-around choice for four-wheelers. It meets the API SL and JASO MA specifications.