Quick Answer: Which Is Thicker 5w40 Or 10w40?

Is 10w 40 too thick?

Multi-grade oils could stay as close to the optimum viscosity over a range of temperatures – not too thick when it is cold and not too thin when it is hot.

The difference between 10W-30 and a 10W-40 is the high temperature viscosity.

Obviously, a 10W-40 is thicker than a 10W-30 at high temperature..

Is it OK to mix 5w30 with 5w40?

Oil 5W30 and 5W40 can be mixed. For example, if you have a sharp drop in liquid level on your way and there is no 5W40 synthetic supply, but there is a similar liquid with the same label and markings, but from an outside producer, in this case 5W30 oil from your manufacturer will help you.

Can I switch from 5w40 to 5w30?

In most cases, if they recommend SAE 5W-40, then SAE 5W-30 may cause problems with wear or even engine damage. SAE 5W-40 will always be “Thin” enough at any temperature, but SAE 5W-30 may be too “Thin” at high temperatures.

When should I use 10w40 oil?

Overall the 10W30 will be the more appropriate oil for cold weather and non-performing engines while 10W40 is perfect for warmer temperatures and older vehicles.

Is 10w40 good for summer?

However, if you live in warmer or hotter regions, you’d definitely want to grab the 10W40 engine oil. This is especially important during hot summer days when the scorching heat of the sun can really amplify the heat generated by your engine.

Which is thicker 5w30 or 5w40?

Viscosity This term is defined as how well the liquid will flow through the engine. 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.

What oil is thicker than 10w40?

The only difference between 10w30 and 10w40 oil is their thickness at engine operating (hot) temperatures. They will flow at the same rate during a cold startup since the starting viscosity is “10” for both formulations.

Is 5w30 good for high mileage?

Both high mileage 5w30 and 10w30 engine oils have the same additives, the only difference is the viscosity at cold startups. Since both oils have the same operating temperature viscosity (30) and additives, they will perform exactly the same. However, 5w30 flows much better than 10w30 during cold starts.

What oil is thicker 10w40 or 15w40?

Viscosity or thickness of the oil increases with rise in temperature. 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. … 10W40 oil will perform cold starts better than 15W40 oil.

Is Thicker oil better for older engines?

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.

What happens if I put 10w40 instead of 5w30?

If you use 10-w-40 instead of 5-w-30 specified by the manufacturer then the viscosity of 10-w-40 used by you will be higher and oil thicker than what is specified during winters. Similarly the oil viscosity will be higher and oil thicker than specified during summers.

What is 10w 40 oil for?

The lower the “W” number the better the oil’s cold temperature/cold start performance. The 40 in a 10w-40 simply means that the oil must fall within certain viscosity limits at 100°C. This is a fixed limit and all oils that end in 40 must achieve these limits.

Is 10w40 thicker than 5w40?

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). … On the other hand, the 10W40 motor oils are thicker than the 5W40 oils for good reasons.

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 good for summer?

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.

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.

When should I use 20w50 oil?

20W50 motor oil is suitable for warmer climates, where the higher temperature causes the oil to thin. It is also useful for vehicles subject to hot temperatures and for those used for high-stress activities such as hauling or pulling trailers.

Is 10w40 good for winter?

Yes, although they are both technically 10w oils, a 10w-40 is much thicker in cold conditions compared to a 10w-30.