Can I use 20w50 instead of SAE 30?

As I was getting at in the above section, no, SAE 30 is not the same as 20w50. They are actually very different types of motor oil. The biggest difference is that SAE 30 is only rated for its viscosity one time while hot. This is because SAE 30 is only intended for use in engines that don't need to start in the cold.
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What can I use instead of SAE 30?

You can use 10w30 instead of SAE 30 in your lawn mower if you want. Since 10w30 has the same viscosity grade at operating temperature, you won't run into any problems by using it instead of SAE 30.
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Can I use 20W 50 in a lawn mower?

The short answer is yes, you can use 20w50 oil in a lawnmower but results may vary. That's not the end of it though. This kind of oil is not designed specifically to be used in a lawnmower. 20W50 is actually a fairly specialized petrol engine oil formulated for use in engines made generally before 1980.
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Will 20W 50 hurt my engine?

If you use 20W-50 oil in an engine that requires 5W-30, for example, you won't notice any immediate engine damage. But your vehicle will experience engine wear each time you start your engine at a low temperature.
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What happens if I use 20w50 instead of 10w30?

The main reason for using 20w50 is to slow down oil burning. If this is the case, using 10w30 would speed up the burning. I have had oil burners before, and used 20w50 in the summer, with no problem. But, your car will be hard to start in very cold weather with 20w50.
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Will Thinner Oils Damage Your Engine?



What is 20w50 oil good for?

A SAE 20W-50 motor oil is typically used in older vehicles or in particularly warm climates. Castrol GTX 20W-50 has been specially formulated to help extend the life of your engine by keeping it free from sludge, even when operating in extremely high temperatures.
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Can I use 20w50 instead of 5W 30?

20w50 is actually thicker than 5w30. This will result in less fuel efficiency, less horsepower, and more engine damage because it will have to work harder to rotate.
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Is 20W50 good for petrol engine?

Suitable Vehicles

Depending on the recommendations for the particular vehicle, 20W50 oil is suitable for large or small diesel engines, gasoline engines, motorcycles and aviation vehicles. It is also suitable for both air- and liquid-cooled engines.
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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.
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Can too thick oil damage engine?

Not only that, but the engine will waste energy pumping the thicker oil, reducing fuel economy. Since thicker oil doesn't transfer heat as well as thinner oil, operating temperatures will increase, possibly leading to accelerated chemical break down (called “oxidation“) and harmful sludge and deposits.
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Is 20W 50 the same as SAE 30?

Is SAE 30 Thicker Than 20w50? As far as viscosity goes, SAE 30 is not thicker than 20w50 when hot, but it is thicker than 20w50 when cold. Since it is a multi-grade oil, 20w50 has additives in it that allow it to remain thin (at a viscosity of 20 to be exact) when cooled.
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Can you put motorcycle oil in a lawn mower?

Got a two-stroke engine? Any two-stroke motor oil made for air-cooled engines, such those in chainsaws, water pumps and weed eaters, will work perfectly in your two-stroke lawn mower engine.
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What is the difference between SAE 40 and SAE 20W 50?

SAE 40 is a mono-grade oil that includes a thickness inside as far as possible when tried at 100°C (212°F) and 150°C (302°F). As a mono-grade oil, it can't consolidate any polymeric consistency file improvers. SAE 20W-50 is a multigrade oil.
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What is the closest oil to SAE 30?

SAE 30 is equivalent to ISO VG 100. SAE 20 is equivalent to ISO VG 46 and 68. SAE 10W is equivalent to ISO VG 32.
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Can I use 10w40 instead of 30?

However, in general, I probably wouldn't recommend using 10w40 instead of SAE 30 in your lawn mower. Most lawn mower engines are designed to use oil with a viscosity rating of 30. Because 10w40 has a higher viscosity, your engine might not be able to lubricate itself as easily.
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Which oil is best for old engines?

When you're choosing the best oil for older cars or high mileage engines, there are several criteria you can look at.
  • Pennzoil High Mileage Conventional Motor Oil. ...
  • Castrol GTX Part-Synthetic High Mileage. ...
  • Valvoline MaxLife High Mileage Synthetic Blend. ...
  • Mobil1 High Mileage Engine Oil. ...
  • Amsoil Premium Protection Motor Oil.
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What kind of oil is best for high mileage engines?

10 Top-Rated Oils and Additives for High-Mileage Vehicles
  • Valvoline High Mileage with MaxLife Technology Synthetic Blend Motor Oil. ...
  • Pennzoil High Mileage Motor Oil. ...
  • Slick 50 Recharged High Mileage Treatment. ...
  • Gumout Fuel System Cleaner. ...
  • Royal Purple High Mileage Synthetic. ...
  • Techron Fuel Cleaner. ...
  • Mobil Super High Mileage Oil.
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Will the wrong oil damage my engine?

Cause damage to engine life

The wrong engine oil can cause engine damage because it does not properly lubricate its components. This will lead to metal-on-metal contact since the moving parts are not being lubricated. Friction quickly follows, causing engine parts to wear.
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What is 20W 40 engine oil used for?

It provides strong oil film for lubrication and total protection to engine viz. protection from rust, corrosion, with reduced wear under a wide temperature range in air-cooled new generation 4 stroke motorcycles.
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What is 20W 40 oil used for?

20W40, similar to other motor oil with different grading, is used for engine lubrication, protection against rust and corrosion, and keeping the engine clean.
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What happens if I use 20W50 instead of 20W40?

20W50 will hold on to the viscosity marginally better than 20W40 when the engine gets hot. However, 20W50 mineral oil will cause more sludge than a similar 20W40 because 20W50 will have more viscosity improvers. Pulsar 150's manual recommends 20W40, but you can use either, not much of a difference.
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Is thicker engine oil better?

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. But really, thicker oil is not good for your engine. Not when “thicker” means higher viscosity than the manufacturer recommends.
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Is 20W-50 oil good for Corolla?

No, not okay. 20W-50 is too heavy of an oil for your Corolla. You need to be running 5W-30 oil which was determined to be best by the engineers and designers at Toyota.
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Is 20w50 oil thicker than 10w30?

It really comes down to personal preference. As your engine does put out significant horsepower, we would lean toward using 20W-50. If your engine sees very light duty or is built exceptionally tight, 10W-30 would be fine. But again, if you twisted our arm, we would give 20W-50 the nod for the thicker viscosity.
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