Quick Answer

Frequent Question Can 5w40 be used instead of 5w20?

The quick answer is no you should not use 5w20 when 5w40 is recommended by manufacturer. The thinner oil may not lubricate the internal engine as designed.

Can I use 5w40 instead of 5w30?

Can You Add 5w40 To 5w30? Miscible oils are those that are not formed by heat. It is not necessary to add one to the other in any significant proportion since they will easily form a solution together. If you mix 1 litre of 5W30 with 5W40, there will be no harm to the engine, as long as it is mixed with 5W40.

Which is thicker 5W-40 or 5W-20?

As an example: Mobil 1 5W-40 has a viscosity of 80 at 40 degrees C, and 13.7 at 100 degrees C. While Mobil 1 5W-20 has corresponding viscosities of 49.8 and 8.9. Clearly the 5W-40 is a MUCH thicker, denser, heavier oil (both full synthetics).

What can I use instead of 5w20?

10w30 and 5w20 engine oils have similar SAE ratings, which means that they will perform similarly at operating or high temperatures. The number 30 indicates the viscosity of the oil at high temperatures, as stated before. 10w30 tends to get thicker in cold weather which makes 5w20 better suited for these environments.

What is thicker than 5W20?

When it comes to their higher operating temperature performance, 5W30 motor oil performs slightly better than 5W-20 and is a thicker oil than its counterpart. 5W30 motor oil would be more robust and not break down very easily at a higher temperature.

Can you mix 5W 30 and 5W 40 engine oil?

you can mix 5w30 with 5w40, you won’t notice much of a difference in regular temperatures, but if you have a high-end, luxury car or performance car, it might be a good idea to use the only 5w40, even in emergencies, as it might cause inconsistencies especially under load which can lead to unwanted damage.

Is 5w40 good for summer?

Can You Run 5w 40 In The Summer? The new 5W40 is great for summer, with its great cold start specs and great performance. The soot load and dilution of fuel will determine how long you can go without interruption.

Is 5w40 better for high mileage cars?

5w30 can be used by different type of vehicles and in different range of temperatures, but is ideal for colder temperatures. 5w40 is often used in higher mileage engine sand performs better in warmer temperatures.

Is 5w 40 oil thicker than 5w30?

5w40 oil is not thicker has it has a higher viscosity. 5w30 has lower viscosity hence it is suitable to use in hot or lower temperatures. 5w40 has higher viscosity hence it is not suitable at all temperatures. 5w30 is a multi-graded oil which is suitable to use in lower temperature.

What happens if I use 10W40 instead of 5W20?

Lose a little gas. mileage and lubrication is not as good plus it puts more strain on the oil pump. Never go thicker than a 5w30 and that would be more for an older higher mileage engine in warmer climates. So go change it back to 5w20.

Can you put 10w30 in a 5W20 engine?

Originally Answered: Can I put 10w30 instead of 5w20? You can, but you will get worse mileage, and in most cases shorten the life of your engine, as it will take longer to pump up pressure for your bearings and lifters, and won’t spray your lower cylinders for an extra second or so on each cold start.

What does 5W 40 motor oil mean?

5w40 motor oil has a winter viscosity grade of five, meaning it’s less viscous at very low temperatures, compared to, say, 10w40. It has a hot viscosity grade of 40, which means it is just as viscous as 10w40 at high temperatures but less viscous than oils such as 15w50.

What oil is closest to 5w20?

Registered. 0W20 should be a acceptable substitute for 5W20, as it will (should) be in the apropriate viscosity range over the same temperature range.

Can I use 5W 30 instead of 5w20?

Can You Use 5w30 Instead Of 5w20. It is not recommended. Although they both have the same winter rating of 5, the thickness (viscosity) of 5w30 is a bit higher than 5w20. That means your engine’s at stake for using the high viscosity oil.

Is 5W-20 thicker than 10w30?

Main Differences Between 5w20 and 10w30

5w20 is thinner at lower temperatures, whereas 10w30 is thicker at lower temperatures. 5w20 is better for cold-weather starting, whereas 10w30 is better for sealing action. Light duty petrol and diesel engines use 5w20, whereas large weight carrying engines need 10w30.

What oil does Kia recommend?

What Kind Of Oil Does A Kia Sportage 2018 Take?

Viscosity: 10W-30 (Above -18) 5W-20, 5W-30 (All TEMPS)
Capacity: 5.1 quarts. (with filter)After refill check oil level.
Torque: 25-32 ft/lbs (Oil Drain Plug)

Can I use 5w30 instead of 5w20 in my Honda CRV?

The thicker 5W-30 oil will result in a slight reduction in fuel economy and horsepower output for your engine due to its increased resistance. The internal engine components are designed to be used with 5W-20 motor oil, so you are also at risk of engine damage if you use 5W-30 instead of 5W-20.

Is all 5w40 oil the same?

When the engine is running and hot, the differences are negligible
5w40 and 10w40 both have high viscosities and are equally effective in protecting against engine wear. Always consult your owner’s manual when choosing an engine oil, or use Total Lub Advisor, inputting your registration or make and model.

Can I top up oil with different oil?

You can add any engine oil as long as it has the right specifications — preferably with an official approval of the OEM (Original Equipment Manufacturer). Not the brand, but the specification and viscosity indicated in your car’s manual are your reference for using the right oil.

What happens if you put a different oil in your car?

Using the wrong fluid can cause poor lubrication, overheating, and possibly transmission failure. A mechanic might not be able to reverse the damage, even by flushing the transmission. Mistakenly adding motor oil or brake fluid can also destroy your transmission.

How long does 5w40 last?

How Long Does 5w 40 Oil Last? It seems like even a good dinosaur can travel 7500 miles without being severely duty-bound. The 5W-40 syn should get you 7500 miles. It is safe to extend drain intervals by using an oil analysis, and then 10-15K intervals can be reached within a few months.

What oil is better for hot weather?

Generally, you’ll get the best protection in the summer when you use a thicker grade of oil, such as a 10W30 instead of a 5W30. Summer heat and the effects of thinning the oil out of engines make them require thicker oils.

Is 5w40 good for Mercedes Benz?

Approved for use in Mercedes-Benz

It offers excellent overall lubrication and wear protection performance for all driving styles and conditions, from mild to severe. Mobil 1 Formula M 5W-40 motor oil is designed to help deliver outstanding overall performance and protection.

Is 0w40 better than 5w40?

However, the two are not on the same level when exposed to cool surroundings. The 0w40 will withstand extreme cold due to its low viscosity. 5w40 will bring its best in extreme conditions, but not at the same level as its companion. If you live in relatively cold to warmer areas, the 5w40 will serve you perfectly.

Is 5W40 fully synthetic?

Full synthetic 5W-40 motor oil is formulated to flow like 5 Weight oil from a cold start in winter temperatures and like 40 Weight oil once the engine has reached its normal operating temperature. Castrol® EDGE® is an advanced full synthetic 5W-40 motor oil.

Can I use 5W40 instead of 5w30 for BMW?

Registered. The Castrol oil that BMW used to spec was midway between a 30 and 40 weight. Anything from 0W30 to 5W40 will be fine if it has the LL-98 or LL-01 rating. You don’t even need that if you are running shorter change intervals.

Is 5W40 good for diesel engines?

One engine oil for mixed fleet operations

Mobil 1 Turbo Diesel Truck 5W-40 engine oil is recommended for use in all super-high-performance diesel applications, including modern low-emission engine designs with Exhaust Gas Recirculation (EGR).