- Main Types of Modern Engine Oils
- Brand Comparison Table of Top Global Oils (2025)
- How Do You Pick the Right Oil?
- 5W-30 vs. 5W-40: Which Is Better?
- Essential Tips for Engine Longevity
- Expert Opinion
Choosing the right engine oil is no longer an afterthought in the age of modern engines, turbocharging, and smart tech. The correct oil means stable performance, fuel savings, and lasting engine health. But how should you decide? Is synthetic always superior to mineral oil? What about the top brands? Here’s the scientific, comparative guide for smart selection.
Main Types of Modern Engine Oils
Mineral Oil:
Petroleum-based, lower in cost, best suited for older engines or gentle, short-distance driving.
More sensitive to extreme temperatures and requires more frequent changes.
Less effective at preventing carbon buildup, oxidation, and sludge.
Full Synthetic Oil:
Chemically engineered for maximum resistance to thermal breakdown and best for modern, turbo, or heavy-duty/spirited driving.
Maintains consistent viscosity across heat/cold extremes—outperforms in Gulf heat and winter cold.
Prolongs engine life and increases long-term fuel efficiency; costs more but extends change intervals up to 15,000 km.
Semi-Synthetic Oil:
A balanced blend of mineral and synthetic bases, offering a good compromise of price and performance.
Great for newer economy cars or smaller modern 4x4s.
Brand Comparison Table of Top Global Oils (2025)
How Do You Pick the Right Oil?
Oil Viscosity (numbers like 5W-30, 5W-40):
The first number (before W): how oil behaves in cold starts (lower is better in cold).
The second number: high-temp protection. In Gulf climates and with turbos, 5W-40 or 0W-40 is often ideal.
Certifications: Always look for up-to-date API SN, ACEA, and manufacturer approval numbers.
Engine Condition: Old/high-mileage cars often do best with mineral or semi-synthetic. New/turbo engines: go full synthetic.
Driving Style: Long hauls, turbo, or sporty use—choose high-grade synthetic. Gentle everyday use: semi-synthetic is sufficient.
Oil Change Interval: Typically 8,000–15,000 km for synthetic, 2,500–5,000 km for mineral oil.
5W-30 vs. 5W-40: Which Is Better?
5W-30: Suited to moderate climates and newest engines.
5W-40: Superior for extreme heat, protecting turbos and reducing evaporation.
0W-40: Excellent for all-round, long-distance, highly variable-temperature use.
Essential Tips for Engine Longevity
Never exceed your vehicle’s recommended oil change interval; check oil levels often.
Always use a quality (OEM or reputable) oil filter; don’t mix oils in a single fill.
Choose brand and viscosity based on your car’s manual—then factor climate and style.
For Gulf climates, prioritize high-temp protection and certified synthetic brands.
Expert Opinion
Automotive experts agree that full synthetics are the top choice for engines made after 2015, especially in hot regions. They highlight Mobil 1, Amsoil, and Castrol EDGE as top global performers, and recommend local brands like Petromin Ultra for Japanese/Korean cars due to tailored formulas. Service engineers stress: follow manufacturer viscosity first and inspect regularly for optimal results.
