Question: Which Is Thicker 5w40 Or 10w40?

What’s better 5w40 or 10w40?

The 5W40 is thinner than the 10W40 at lower temperatures.

But when the temperature is higher, both motor oils similarly perform their intended functions (using the same viscosity).

However, the main difference between these two engine types is that the 5W40 can work better than 10W40 in very cold places..

Can I use 10w 40 instead of 5w40?

10w40 is thicker than 5w40, ONLY when cold. At operating temperature it is exactly the same. … Multi-viscosity oils with a lower W number are specifically designed to flow better, and thus lubricate better, at very low temperatures. There is no need to use a 5w-40 if the vehicle only requires 10w-40.

Should I use thicker oil in a high mileage engine?

A: Yes. This is a practical method to improve oil pressure in an older, high-mileage engine. The slightly thicker oil film from the heavier base weight oil – 10W – can help protect worn engine bearings as well.

Is 10w40 good for summer?

The only difference between 10w30 and 10w40 oil is their thickness at engine operating (hot) temperatures. … Using 10w40 oil in the summer will help the oil stick to internal components in high temperatures, avoiding the wear and tear from metal-to-metal contact between moving parts.

What does 5w40 mean?

5w40 engine 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. Why does the viscosity of engine oil matter?

Which is thicker 5w40 or 5w30?

The working viscosity of 5w30 is basically from 9.3 to 12.5mm2/s whereas the operating viscosity of 5w40 is 12.5 to 16.3mm2/s. That means 5w40 has larger viscosity than 5w30. So, 5w30 is better than 5w40.

Can I mix 5w30 and 5w40 oil?

You don’t need to worry about adding one to the other in any proportion as they will easily form a solution. You can use 1 litre of 5W30 mixed with 5W40 and it will not cause any sort of ill effects to the engine. … In the long run, though, stick to using one type of oil to get the best performance out of your engine.

When should I use 10w 40 oil?

When to Use 10w30 vs 10w40 Using 10w30 oil in cold weather will help reduce excessive oil temperatures and drag as the engine warms up. Using 10w40 oil in the summer will help the oil stick to internal components in high temperatures, avoiding the wear and tear from metal-to-metal contact between moving parts.

Is 5w30 good for high mileage?

1. Valvoline 5w30 – Editor’s Choice Best Synthetic Blend High Mileage Oil. … Having a large market share also allows Valvoline to cater to all niches, but we think that this is the best all-around motor oil for a high mileage engine that we saw. That is why the Valvoline 5w30 is our Editor’s Choice best high mileage oil.

Can I replace 5w30 with 10w40?

When you change the viscosity of your oil, you will be gaining an advantage for some engine parts to the detriment of some other parts. I would not recommend going to a 10w-40 unless the engine had an oil consumption problem or was used exclusively in a high load application in hot ambient temperatures.

What oil is thicker than 10w40?

A 10W40 oil will be thicker in the cold than 15W40 oil, but they will have the same viscosities at higher temperatures. The winter viscosity number dictates cold-start performance. A lower number indicates that the cold oil will be thinner, hence applying less static friction on the engine, and less drag.

What is 5w40 oil used for?

5W-40 motor oil. The 5W-40 viscosity is a prevalent recommendation for performance engines in European vehicles with gas-powered engines, and in American diesel pickup trucks. We offer 5W-40 oils for gasoline- and diesel-powered engines.

Will 5w40 hurt a 5w30 engine?

Takeaway. If you are racking your brain to choose between 5w30 and 5w40, we recommend you go with 5w30. However, if it is too expensive or not available for use, you can always go with the 5w40, which is just as good and will not cause any damage to the engine parts.

Will thicker oil damage my engine?

Not only that, but the engine will waste energy pumping the thicker motor oil, reducing fuel economy. Since thicker oils don’t transfer heat as well as thinner oils, operating temperatures will increase, too, possibly leading to accelerated chemical break down and harmful sludge and deposits.

Is 5w40 OK for my car?

5w40 is better for starting your engine at low temperatures as it flows more easily in this environment. 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.

Is 10w30 thicker than 5w40?

Characteristics of 10W-40 Motor Oil 10W-40 is a bit thicker than 5W-40 but is still rather thin and works well to lubricate the moving parts of an engine during start-up. This oil’s number “40” means it will be a little thicker than average while exposed to the heat of a running engine.

Is 5w40 good for summer?

5w30 oil is designed to operate at temperatures as low as -25°C, but is also a great choice for warmer climates that reach up to 25°C.

When should I use 5w40 oil?

5w30 can be used by different vehicles in a different range of temperatures. However, it is ideal for colder temperatures. The 5w40 is often used in higher mileage engine sand and functions better in warmer temperatures.