Engine oil lubricates, cools, and cleans the engine. Using the wrong grade can reduce protection and efficiency.
Your owner’s manual lists the correct specification.
Viscosity grades
Labels like 5W-30 describe how oil flows. The first number with W is for cold starts — lower means it flows better in cold weather. The second is thickness at operating temperature.
Types of oil
- ▸Mineral — refined crude oil; for older engines
- ▸Semi-synthetic — a blend, offering more protection
- ▸Fully synthetic — best protection and stability, common in modern engines
Specifications matter
Many manufacturers require oils that meet particular standards (such as ACEA, API, or manufacturer codes). Using an oil without the correct approval can affect warranty and long-life service intervals.
Checking and topping up
Check oil on level ground with the engine cold or after a few minutes off. Top up with the correct oil, little by little, between the minimum and maximum marks.
CAUTION: This is general automotive information, not professional mechanical advice. Always follow your vehicle manufacturer’s specifications and service schedule, and have brakes, steering, tyres, and other safety-critical systems inspected by a qualified mechanic.