How to Choose the Right Engine Oil for Your Car
Choosing the right engine oil isn't just a matter of picking between 5W-30 and 10W-40, and it doesn't mean the most expensive oil is always the best. The correct oil is the one that matches your vehicle manufacturer's specifications in terms of viscosity grade, performance level, and required standards.
In Kuwait specifically, where temperatures run high and drivers spend a lot of time using the AC and sitting in traffic, paying attention to engine oil becomes an essential part of maintaining your car's performance and extending your engine's lifespan.
1. Start with Your Owner's Manual, Not the Weather
The first step in choosing engine oil is checking your owner's manual or the manufacturer's recommendations. You'll typically find the required viscosity grade, such as:
0W-20
5W-30
5W-40
10W-40
The manufacturer may also specify a performance standard such as API or ACEA, or a proprietary specification of its own.
It's not advisable to switch to a thicker oil just because Kuwait's climate is hot; many modern engines are designed to run on low-viscosity oils even in hot regions. That's why the manufacturer's recommendation remains the primary reference.
2. What Do the Viscosity Numbers Mean?
Let's take 5W-30 as an example.
The first number followed by the letter W indicates the oil's flow characteristics at low temperatures, while the second number indicates its viscosity at high engine operating temperatures.
This doesn't mean 10W-40 is better than 5W-30, or that 20W-50 is "stronger" than either. Each grade is designed to meet specific requirements, and using the wrong viscosity can affect lubrication, engine efficiency, and fuel consumption.
3. Pay Attention to the API or ACEA Performance Standard
Viscosity alone isn't enough. You also need to make sure the oil meets the performance standard required for your engine.
For gasoline engines, many oils use API classifications. One of the more recent standards is API SQ, introduced in 2025, which offers improved requirements for protection against deposits, wear, and certain issues associated with modern engines. That said, this doesn't mean you should randomly buy the newest classification available — the reference point is always what your car's manufacturer allows.
Some European cars, meanwhile, may require ACEA specifications such as A3/B4, C2, or C3, and these categories vary depending on engine design, exhaust treatment systems, and viscosity requirements.
4. Full Synthetic, Semi-Synthetic, or Mineral?
Engine oils are generally divided into:
Full synthetic oil: Offers good stability under operating conditions and high temperatures, and is used in many modern vehicles.
Semi-synthetic oil: Combines mineral oil with enhanced base oils, and may be suitable for certain cars according to manufacturer recommendations.
Mineral oil: Used in some engines, particularly older ones, if their specifications allow for it.
Once again, the type of oil shouldn't be chosen by name alone; what matters is that it meets the viscosity and specifications required for your engine.
5. Does Kuwait's Heat Mean You Should Change Your Oil Type?
Not necessarily.
Kuwait's heat, traffic congestion, and frequent stop-and-go driving can make operating conditions more demanding on the oil, which is why it's important to monitor oil levels and stick to the specified maintenance intervals. But that doesn't mean you should switch from 5W-30 to 20W-50, for example, on your own just because the weather is hot.
Some manufacturers classify driving in extreme heat or frequent stop-and-go conditions as severe usage conditions, and may recommend different maintenance intervals in that case — so check your car's specific maintenance schedule.
6. Don't Forget the Oil Filter
Even the best oil won't do its job properly if the oil filter is old or unsuitable. The filter captures contaminants and impurities in the oil, so follow the manufacturer's recommendation on when to replace it — it's usually changed along with every oil change service.
7. Buy Oil from a Trusted Source
Make sure to buy oil with clearly labeled information, including viscosity grade, performance standard, and manufacturer specifications where relevant.
The B2B Auto Kuwait website features a section for oils and lubricants, including genuine Total engine oil among its products. Whatever product you choose, make sure the viscosity grade and specifications listed match what's required for your car before purchasing.
Conclusion: How Do You Know Which Oil Is Right for You?
Before buying new oil, remember this simple rule:
Owner's manual first, then viscosity, then performance standard, and only after that, the appropriate brand.
Don't rely solely on other people's experiences — an excellent oil for one car may not be suitable for yours. Given driving conditions in Kuwait, using the right engine oil and sticking to the recommended change intervals helps reduce wear and keeps your engine clean and performing well over the long term.
