Can you use 10w40 instead of 10w30?

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.

What happens if I put 10W40 instead of 10w30?

Between a 10W-30 and 10W-40, 10W30 motor oil would run smoother in colder climates while a 10W40 would be more effective in preventing engine wear and tear in warmer temperatures.

Which is better 10w30 or 10W40?

10w40 is more viscous than 10w30. The thicker oil helps older engines handle higher temperatures and manage wear and tear more efficiently. The thicker oil will reduce wear and tear and extend the life of your engine.

Can you mix 10w30 and 10W40?

They will mix right in with each other and no harm will be done. Even if you were to mix syn with conventional you’ll be fine. If you were to labratory test your oil it will read out as not a true 10w-30 but no harm will be done.

What oil can I use instead of 10w30?

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Yes. 5w30 and 10w30 are both 30 weight oils and the exact same thickness in your engine when it is at operating temperature. The 5w30 is better because it thickens less when cool or cold.

What is the best engine oil for hot weather?

  1. Valvoline Advanced Full Synthetic 10W-30 Motor Oil.
  2. Shell Rotella T5 Synthetic Blend 10W-30 Diesel Motor Oil.
  3. Castrol Edge Advanced Full Synthetic 10W-40 Motor Oil.
  4. Valvoline High Mileage with Max Life Synthetic Blend 10W-40 Motor Oil.
  5. Mobil 1 Advanced Full Synthetic 10W-30 Motor Oil.

When should you use 10W40 oil?

Using the correct viscosity oil eases starting, reduces friction, and slows wear. For even more effective start-up protection, use a synthetic 10W-40 instead of a conventional 20W-50. The synthetic 10W-40 flows easily and still maintains enough viscosity to protect piston skirts and bearings when it gets hot.

Is Thicker oil better for older engines?

Newer vehicles can utilize thinner oils for faster lubrication of new engine parts. In contrast, older, high-mileage engines benefit from thicker oils to prevent friction and oil loss.

When should I use thicker oil?

If, for instance, clearances between engine components have increased, gotten sloppy, a thicker oil can help to fill the void. Within reason, thicker oil maintains a better lubricant film between moving parts. Some have even used thicker oil in a leaky engine to prevent oil from seeping out.

What is 10W 30 oil recommended for?

10w30 engine oil can be used in most automotive petrol or diesel engines. Even though this engine oil can be used for starting the vehicle in cold weather, it is best suited for use in hot weather. It is also mainly used in vehicles which are supposed to carry heavy loads or haul heavy luggage.

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Is 10w40 synthetic?

Semi-synthetic oils such as 10W40 have long been the standard. Their base is refined crude oil, which is then blended with additives.

Which oil is thicker 5w30 or 10w40?

A 10w-40 motor oil is a thicker oil at startup than a 5w-30 motor oil. Therefore, 10w-40 oil clings to the engine’s moving parts more than the lower viscosity 5w-30 oil.

What is 10W-40 oil for?

10W-40 motor oil Higher viscosity oil such as a 10W-40 can be useful for older engines burning or leaking oil. We offer Mobil™ 10W-40 high viscosity motor oils for use in vehicles with more than 75,000 miles, and a synthetic blend oil when cost is a consideration.

Is 10W30 good for high mileage?

Mobil Clean High Mileage 10W-30 is designed for vehicles with more than 75,000 miles. Its advanced formulation helps protect seals and prolong engine life. … These oils protect against sludge and engine rust and corrosion under high and low-temperature operating conditions.

Will thicker oil increase oil pressure?

Yes thicker oils will increase oil pressure, but will reduce engine horsepower. Excessive oil pressure may explode the oil filter, damage seals, blow out oil passage plugs or even damage bearings.

Can I mix synthetic and regular oil?

The short answer is… 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.

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