Asked by: Pusa Ascherl
business and finance gasoline prices

What oil should I get for my car?

Last Updated: 18th February, 2020

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The carmakers usually specify a 5W-20 or 5W-30 oil, particularly for lower temperatures, with a 10W-30 oil as optional, particularly for higher ambient temperatures. These three ratings cover just about every light-duty vehicle on the road. Even more important, though, is changing the oil and filter regularly.

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Correspondingly, how do I know what oil to put in my car?

There's no substitute for reading your owner's manual. It will list what type of oil the automaker recommends for your car. It may also recommend different oil depending on whether you live in a hot or cold climate. The most important thing is to use oil that's the right thickness, or viscosity, for your car's engine.

Subsequently, question is, which company engine oil is best? Best Motor Oil Reviews & Recommendations 2019

  • Best Overall: Mobil 1 High Mileage 5W-30 Motor Oil. Amazon.
  • Best Value: Valvoline High Mileage Synthetic Blend Motor Oil. Amazon.
  • Honorable Mention: Liqui Moly Premium 5W-40 Synthetic Motor Oil. Amazon.

Thereof, can I use 5w30 instead of 5w40?

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.

Can I use 10w30 instead of 5w30?

The 10W30 and 5W30 both have different thicknesses in cold temperatures, and 10W30 is thicker than 5w30. So, it is best for vehicles running in cold climates to use the 5W30 since it is thinner than the 10w30. Low numbers indicate lower viscosity, meaning the oils are thinner.

Related Question Answers

Tandy Isard

Professional

What happens if I put the wrong oil in my car?

Motor oil slip-ups.
The brand of motor oil matters little, but its viscosity grade (10W-30, for example) is important. Use only what the owner's manual specifies. Using the wrong oil can lead to reduced lubrication and shorter engine life. If the manual says to use synthetic oil, do so.

Rogers Sale

Professional

Should I use thicker oil in an older 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. The engine does not leak and I've never seen a whiff of blue smoke.

Svetoslav Knopke

Professional

Which oil is better 5w30 or 10w30?

5w30 is less viscous than 10w30. 5w30 is also the thinner engine oil of the two at lower temperatures. 5w30 is used for light-duty engines while 10w30 is used for engines which carry heavier loads. 10w30 provides sealing action in the engine due to the fact that it is thicker than 5w30 engine oil.

Mouhcine Acero

Explainer

Is synthetic oil better for diesel engines?

Western Turbo Diesel & Fuel Injection
There are many advantages to using synthetic engine oil in your diesel engine. Synthetics have a much better flow rate in cold weather than conventional engine oils, allowing critical moving parts to be better lubricated on start up.

Yunus Agayan

Explainer

Can I use 10w40 instead of 5w30?

Your vehicle does not use 5W-30 oil. 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.

Saturnina Terrades

Pundit

Is there a difference between motor oil and engine oil?

Motor oil is for your vehicle's engine. A couple of differences are the following: An engine oil is designed to deal with the products of combustion, whereas an automatic transmission fluid (ATF) does not see contaminants from fuel burning.

Dieynaba Oitaven

Pundit

Does my car need synthetic oil?

Check your owner's manual to determine whether you vehicle requires synthetic oil. Most newer cars require synthetic oil but older cars should run just fine with a conventional oil unless your car has over 75,000 miles on it, in which case a high-mileage oil is recommended.

Kaila Espil

Pundit

What is the difference between 5w30 and 5w40 engine oil?

In fact, the only major difference between 5w30 and 5w40 is the viscosity in warmer temperatures. This makes the 5w30 better suited for colder temperatures and the 5w40 better suited for warmer ones.

Macarena Lanzinha

Pundit

What oil is thicker 5w30 or 10w40?

5w30 is less viscous while 10w40 is more viscous. The 5w30 has a viscosity of 30 at high temperature while a 10w40 has a 40 viscosity at high temperatures. When at high temperatures, the 5w30 oil becomes thinner than the 10w40 oil since 30 is lower as compared to 40.

Adelaido Andratschke

Pundit

Which oil is thicker 5w30 or 5w40?

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.

Sindo Jacini

Teacher

Can you get sludge with synthetic oil?

Synthetic motor oil will not thicken during cold temperatures which will make engine starting and oil pressure buildup better. Synthetic motor oil does not evaporate as quickly. At this high temperature oxidation can occur which will develop deposits and varnish. These also can cause sludge.

Mayda Hensgen

Teacher

What is 5w 40 oil?

The number before the 'W' is the 'cold' viscosity rating of the oil, and the number after the 'W' is the 'hot' viscosity rating. So a 5W40 oil is one that behaves like a 5-rated single grade oil when cold, but doesn't thin any more than a 40-rated single grade oil when hot.

Aizhu Stas

Teacher

Is 5w30 good for old cars?

So yes as long as you have good oil presure with 5W30 you can run it with no problems.

Nelly Leitholt

Teacher

What is 5w 30 synthetic oil?

Mobil 1 5W-30 Full Synthetic Motor Oil, 5 qt.
Mobil 1 5W-30 is an advanced full synthetic engine oil designed to keep your engine running like new by providing exceptional wear protection, cleaning power and overall performance.

Chelo Daak

Reviewer

Will 5w30 hurt a 5w20 engine?

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.

Melodia Manuel

Reviewer

What cars use 5w30 oil?

5W-30 oil is a common motor oil viscosity that's recommended by many auto manufacturers for use in all types of modern vehicles - passenger cars, SUVs, light vans and trucks - including high-performance turbo-charged and supercharged engines.

Hnia Vaniev

Reviewer

Which is better Castrol or Motul?

People who use Castrol say it's better. People who use Motul say it's the best ever, and so on. You get the idea. Whatever oil you use you better be sure it meets your specific automobile requirements for approval standards and viscosity range.

Lizabeth Pavlyuk

Reviewer

Which is better Liqui Moly or Motul oil?

Motul and Liquimoly are both brands, and they have a range of products. For racing, Motul 300V is a better oil, but the gains are minuscule , less than 1% and more in the 0.3–0.5% range.

Montesclaros Sankaranarayanan

Supporter

How long does synthetic oil last?

Synthetic Oil Change Interval
If you are using synthetic oil, the interval between oil changes can be extended. Manufacturer recommendations range from 5,000 miles to 7,500 miles, on average. Some recommended intervals might be shorter or longer.