Which oil is better 20W50 or 25W-60?

Article by: Antonio Preciado | Last update: April 10, 2022
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25w60 oil

It is a higher grade, ideal for the summer, but also for engines that have an internal problem of oil consumption or metal play.


When should I use 25w60 oil?

A 25W-60 motor oil is often used in older cars or in especially hot climates. Castrol GTX 25W-60 has been specially formulated to extend the life of your engine by keeping it free of sludge, even in extremely high temperatures.

What does 25W-60 mean?

These are the temperatures at which the oil will have the optimal viscosity and performance to work inside your car. So the 25w-60 means that the correct minimum operating ambient temperature for this oil will be 25°C and the maximum 60°C.

What is the difference between 20W50 and 25w50 oil?

What is the difference between 20w50 and 25w50 oil? The difference between 5W-30 and 20W-50 motor oil is in its viscosity index at different temperatures. The first number is a temperature reading, the second is the viscosity index.

What happens if I use 20W50 oil?

Benefits. 20W50 motor oil is a high viscosity oil that provides cushioning and protects against metal-to-metal contact. It is also a more effective sealant than thinner oils. Both of these benefits extend engine life.

17 related questions found

How long does 20W 50 oil last?

The oil has a lifespan equivalent to the rate of use of the vehicle, although there is a very efficient average that simplifies change times; This is 6 months or 7,500 kilometers, whichever comes first, as this fluid begins to burn from use, thickening and losing its properties…

What is the difference between 15W40 and 20W50 oil?

The 15W40 is recommended for engines with power requirements and moderate demand. The 20W50 is specially designed for high mileage vehicles that by design require a lubricant with a higher viscosity index.

When is 25w50 oil used?

Mobil Special 25W-50 is recommended for the lubrication of high mileage vehicle engines. Before using Mobil Special 25W-50 oil, consult your vehicle owner’s manual and verify the manufacturer’s recommended viscosity grade and API Quality Level classification.

What happens if I use thicker oil in the engine?

Engines with very viscous oil have a harder time starting. Also, if there is increased resistance between parts due to the “thickness” of the oil, it can start to cause damage. It may even begin to fall into the combustion chamber, resulting in burning.

What is the best high mileage motor oil?

High mileage vehicles should use 20W-50 or 20W-60 viscosity oil. You should change the oil every 5,000 km or every six months, whichever comes first.

Which oil is thicker 25w50 or 25W-60?

25w60 oil

It is a higher grade, ideal for the summer, but also for engines that have an internal problem of oil consumption or metal play.

What does 20w 60 mean?

If we take for example 20w60 oil, the viscosity at room temperature is 20 and 60 when the engine is hot. The ‘w’ indicates “winter” or winter, and is the value of the viscosity at low temperatures.

What does the W stand for in motor oil?

This W stands for “winter”, and the number indicates the viscosity of the oil at low temperatures. An oil with a low SAE W number will have better fluidity, thus facilitating cold starting and reducing engine wear.

What grade of oil to use based on mileage?

A thin oil 5W30, 5W40, 10W30, or 10W40 is recommended, make the oil change between 15,000 and 20,000 km. How do I find a reliable mechanical workshop? You can use a thicker oil such as 5W50, do the oil change between 15,000 and 20,000 km.

What is better a thick or thin oil?

The fact that the oil is thicker does not mean better lubrication, it means greater resistance to the movement of the moving parts of the engine, causing 2 effects.

What happens if I change the viscosity of the motor oil?

Switching to a higher viscosity will result in internal shearing (shearing) of the oil, as a result of the process of internal movement of the oil molecules passing over each other, causing an increase in temperature and a decrease in operating efficiency.

What if the oil is very thin?

As noted above, oil that is too thin will not provide enough hydrodynamic lubrication and oil that is too viscous will not flow properly. Eventually, as the engine wears out, it may be necessary to compensate for this wear by slightly raising the viscosity.

What cars use 25w50 oil?

What type of vehicle is it recommended for? Recommended for gasoline engines of cars and trucks with more than 100,000 kilometers, model 2004 and earlier, where the manufacturer’s manual recommends an oil with API SL service quality or earlier.

What is the best oil for a freshly overhauled engine?

Initial Oil: you must use the oil recommended by the vehicle manual, preferably a multigrade oil, API SG grade or Superior, for Gasoline engines, CF-4 for two-stroke Diesel.

What type of oil can I put in my car?

If you want to know the oil that your car uses, it is best to look for it in the manual that came with the car when you purchased it, since all the needs of the vehicle are indicated there and the necessary type and viscosity of this product will be present, although not a brand is mentioned.

When should 15W40 oil be used?

The 15W40 lubricating oil is precisely designed to protect the diesel engine of trucks, trailers and tractors, since it supports the differences in operation between a car and these vehicles.

When should I change from 15W40 oil to 20w50?

When the car is taken to all the maintenance during the warranty period at the dealership, they will inform you of the oil that must be applied once the car reaches a certain mileage, some brands recommend changing after 70 thousand kilometers of travel to a 20w50 oil, this should be recommended by the…

When is 15W40 oil used?


As a 15W-40 viscosity grade, it flows like a 15 viscosity oil from winter start-up; however, it provides anti-wear protection 40 once the engine reaches full operating temperature.

How many kilometers does Castrol 20W50 motorcycle oil last?

It depends a lot on the use that is given to the motorcycle, it is normally specified in the motorcycle’s instruction manual, but in most cases it does not adapt to reality, it is advisable to change the oil every 5,000 or 6,000 km.

How many kilometers 20 50 Castrol?


Choose Castrol® GTX® 20W-50 to protect against sludge and Castrol® GTX® High Mileage for older cars over 100,000 miles. Castrol® GTX® High Mileage 20W-50 is specially formulated for cars with more than 100,000 kilometers.

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