Does it matter what engine oil I use?

Does it matter what engine oil I use?

No. Switching brands is not harmful to your engine as long as you choose an oil marked with the API donut of the same level, e.g., API SN. You may give up enhanced performance if you switch from synthetic or high mileage to conventional oil. MYTH: When motor oil becomes dark, that means it’s time to change it.

Can I put 10w40 instead of 5W30?

The recommended oil viscosity for your vehicle, according to Kia documentation, is 10W-40. If you drive the vehicle in exceptionally cold weather, well below 32 degrees, you can use 5W-30 oil but even 10W-40 is still perfectly OK to use if outdoor temperatures are below freezing.

Is synthetic oil bad for old engines?

Yes, you can use synthetic oil in your classic car. Or your 20-year-old Taurus. The idea that synthetic oils are bad for older cars probably comes from the fact that early synthetic oils (we’re talking 1970s) contained a chemical compound that could damage engine seals and, in some cases, cause leaks.

Can you mix synthetic and regular oil?

yes. If you don’t have a choice, adding synthetic oil to regular oil can help you out in a pinch. Since motor oils are generally made from the same ingredients (base oil and additives), they are typically compatible when mixed.

Will it hurt my car if I use 5w30 instead of 5w20?

Due to the increased resistance of the thicker 5W-30 oil, your engine will produce slightly lower fuel economy and horsepower output. You also risk engine damage when using 5W-30 instead of 5W-20, as the internal engine components are specifically designed to be used with 5W-20 motor oil.

Is it OK to use 5w30 instead of 5w20?

In general, you can use 5w30 motor oil instead of 5w20. The 5w30 motor oil is more viscous than the 5w20. If the oil is more viscous, it will provide more protection against friction because it is more resistant to heat and does not easily break down.

What happens if you mix 5W20 with 5w30?

What Actually Happens When You Mix 5W30 with 5W20? Nothing serious is going to happen. The oils will come together, but they are unlikely to blend into a single oil; so, they’d stay and flow separately.

Is 5W20 good for winter?

5W20 motor oil is another low-temperature grade typically recommended for winter use, with a 10W-30 as an alternative for higher temperatures. This oil type is common because it provides the best fuel economy, saves fuel consumption, and has fewer exhaust emissions.