0W20 Vs 5W20 Truck Motor Oil. Which Oil Do I Use???

SAE 0W-20 and SAE 5w-20 are quite similar except that when it comes to the lowest temperature they can flow at, one is better than the other. Other than composition differences and lowest temperatures of flowing, both oils allow your engine to run as efficiently as possible in cold weather conditions. So you’re probably wondering how these two oils differ?

The primary distinction between them is their weight or viscosity grade (how thick a fluid seems). The first number in an oil’s designation denotes its nominal viscosity.

For example, 1 means watery thin whereas 10 stands for something very viscous like honey so on this scale 20 would stand somewhere near extremely viscous motor oil. Since winter grades have much lower numbers than summer grades, 0W-20 is thicker than 5w-20.

There would be no difference in lubrication and performance between these two oils used in cold weather when compared to each other but during the summer or hotter climates, one being thinner may perform better than the other.

Why Should I Choose Different Oils?

Oil is a critical component of your car. Using the wrong type can damage it or even cause expensive engine repairs, so knowing how to choose which one you need and when to use each grade will save money over time.

0W-20 (can be referred to as 0w20) is recommended for cold climates where temperatures are below -10 degrees Celsius during winter months because they flow more readily at low temperatures than 5W30(5w30).

Both work well in other seasons but don’t forget that viscosity grades like 10W40 etc should not be used if there’s no requirement unless specified by the manufacturer since these types have very high resistance against heat while working under load on motorway speeds.

But never ever try using them with a manual gearbox since it will cause your clutch to wear very quickly and damage your bearings so for manual cars in summer choose 5w30.

Viscosity grades for motor oil are either single-grade or multi-grade. Single grade oils have 11 options, which include 0W to 60 and 20 to 50 temperatures ranges. Multigrade oils only consist of two viscosity levels but can function in a wide range of temperature conditions due to special polymers added that make them adaptable in both cold and hot weather.

Single-grade oil has 11 viscosity grades which do not have modifiers while multi-grade oils are more versatile and can change with temperature changes.

0W 20 Oil Vs 5W20 Breakdown

Motor oil has different grades, including 0W20. The ideal grade for winter conditions is a low-temperature one and can be used in subzero weather as well as at normal operating temperatures of an engine after it starts running.

These oils are liquid enough to flow smoothly while still providing lubrication during cold start issues or other problems that might arise from colder climates when using lower temperature motor oil than what’s recommended by your car manufacturer.

5W20 oil is a low-temperature grade that saves fuel consumption and has fewer exhaust emissions. This type of oil typically provides the best fuel economy, so it’s recommended for winter use with 10W30 as an alternative for higher temperatures. 5w20 is sought globally by motor manufacturers and governments – led by Japan, Europe, and the U.S.

Both 0W20 and 5W20 are low-viscosity, high-quality oils that can massively optimize fuel economy. These properties remain the same when used in fair weather conditions; however, there is little to no difference between the two at colder temperatures.

0W20 Vs 5W20 Best Uses

Thick motor oil has many uses, but which is the best? We’ll explore some of the potential benefits and drawbacks to help you decide.

Thick motor oils are good for lubrication when it comes to bearing surfaces, gears, or other machinery. When people use thick oils in their car engines they may find that it lasts longer due to its thicker consistency.

However, this type of oil can be harder on a car engine because it needs more time and power from the engine and can create unwanted friction with internal parts.

Manufacturer’s Recommendations

Your owner’s manual is there for a reason: to help you with your vehicle. It’s quite simple, yet often overlooked – always check it out and make sure that the recommended viscosity of oil matches what they recommend in your car model. If both 0W20 and 5W20 variants are on their list, use them alternately without hesitation depending on weather conditions!

To find an oil that meets the SL service rating, look for a starburst and API donut. The starburst symbol indicates that your motor oil has passed tests like those listed under SL service while the API donut means it’s been tested by ACEA (European equivalent of American Petroleum Institute).


0W20 & 5W20 are within almost the same temperature spectrum as they both fall between 40°C and 68°F (5°C). These numbers change depending on whether or not you live somewhere hot like Florida or colder climates such as Alaska.

It’s better to opt for a 0W-20 if your location experiences temperatures below zero while using a 5w-30 will be best suited for warmer areas that experience summer weather beyond 86°F (30°C)

When looking for quality engine oil, choose an oil brand with the right viscosity grade and an API donut. The starburst symbol shows that the oil has passed all tests listed in SL service while the API donut means that your motor oils have been tested by American Petroleum Institute (API) which meets current SL standards. ACEA is a European equivalent of API as they test their own brands’ motor oils to meet similar requirements.


The 0W20 variant is thinner than 5W20 and delivers better fuel economy. It also meets the demands of turbo-diesel engines which allows for more efficient engine performance in colder weather conditions at startup such as during winter months or early morning starts when temperatures are below 68°F/20°C.

Blending 0W20 With 5W20

There are mixed reactions when enthusiasts and motor oil savants are asked if this is possible. Most experienced mechanics err on the side of caution and warn against mixing 0W20 with 5W20, as SAE 0 oils may be full-synthetic while a 5W20 might be only partially synthetic or conventional.

Even if your variants were 100% synthetic, you’d need to worry about warranty issues for using such thin oils in modern engines (made within the last ten years) that have tight tolerances since they’re more efficient than older ones made decades ago before synthetics existed yet did well without them then.

Check the stuff you are planning on mixing to ensure compatibility and consult your owner’s manual about what kind of oil grade it permits!

There are many reasons why you shouldn’t mix and interchange 0W20 oil with 5W20. One is that the SAE J300 specifications only allow a maximum viscosity or thickness of -35°C, so it won’t pass this test when used as a 5W-30 or 10w40 because they have more additives than regular motor oils to protect parts at high speeds in extreme conditions.

It could also mean trouble if contaminants remain stuck on engine components which would make for an unpleasant mixture between 20 weight viscosities along with other types of chemicals present within those particular brands’ products.

FAQs For 0W20 Vs 5W20 Truck Motor Oil

Is 0W20 Good For Summer?

The 0W-20 oil is a type of multi-viscosity engine oil that contains special additives to make it have different viscosities when cold. During the summer, OW-20’s high viscosity makes this ideal for hot climates, and during winter low-temperature conditions with its thinner properties are preferable.

However in contrast 5w30 will be better suited for colder seasons because due to lower temperatures an air pocket may form between the lubricant layer which could lead to severe damage over time if not corrected by changing out your vehicle’s motor oils more frequently.

The engine oil label will specify the weight number of each grade and should be followed for your particular application. It is not recommended to use 0W-20 in most heavy-duty diesel trucks as well as any gasoline-powered engines.

In conclusion, it is not recommended to mix different viscosity engine oils for your car. The 0W-20 oil is best mixed with other like grades as well as approved and certified by the manufacturer of your vehicle for use in specific service intervals depending on their own recommendations. If you are unsure about what product to purchase, or have

Can You Use 5W20 In The Summer?

The choice of oil you use is dependent on the time of year and what your car manufacturer recommends. 5W20 will work better for colder temperatures, but using it in warm weather can risk putting engine components in more danger due to thinner oil not protecting as well against heat.

If your car requires 5W30 or another spread that should be used all year round (5w40), then make sure this is recommended by either yourself or an automotive professional before switching up oils during different seasons.

Some cars such as Audi A4s or Mercedes Benz have their oil requirements already listed in the owner’s manual. If you are unsure of what your vehicle requires, check with your car manufacturer’s service department and have them look up the appropriate weight number to use for your engine type.

Using the incorrect weight motor oil can put wear on parts that are not protected against heat, the opposite of what is needed during summertime.

If you have questions about your particular car make and model’s oil requirements, consult with an automotive professional or manufacturer before switching up oil blends to find out which one works best for you!

Can I Substitute 5W20 For 0W20?

If you live in a region with extremely cold weather, 0W20 is the better option. If there’s no chance of it getting so much colder than minus 25° F (minus 31° C), choose 5W-20 instead. But if conditions are that harsh and your car isn’t going to be idle for long enough to warm up properly between starts or stop often during driving.

Instead, use 0w 20 oil because its thicker viscosity may help prevent engine damage from starting problems caused by a less viscous lubricant at low temperatures – as happened once on my Subaru Forester when I used regular weight Mobil 1 synthetic motor oil rather than the AW/50 winter-grade version which is meant for these extremes!

0W20 Vs. 5W20 Price

The 0w20 and 5w20 are essential oils to pay attention to as they differ in prices, functionality, and cold conditions. The price of these two types may vary based on the supplier but it’s most likely that the 5w-20 is slightly cheaper than its counterpart – which has a top grade efficiency for colder temperatures.

It’s worth noting that both multi-grade engine oils cost more than your average monograde type due to their high-performance capabilities; despite being expensive you get great value out of them – especially when looking at how well they work with different climates or weather changes.

Main Takeaways – 0W20 Vs 5W20 Truck Motor Oil

While there are many different variables to consider when it comes to choosing the best motor oil that fits your needs, one of the most important factors is its viscosity. Viscosity refers to how thick or thin an oil is and has a direct impact on engine performance by regulating heat transfer in the cylinders.

A lower viscosity means better flow at higher RPMs while higher viscosities provide more protection for high-stress situations like cold starts. If you want more horsepower without sacrificing wear protection, then 5W20 truck motor oil may be worth considering!

The difference between the two oils is primarily one of weight. A 20-weight oil will be thinner and slip through engine parts more easily than a 10-weight, but it will also evaporate faster in cold weather.

If you need an oil that provides better lubrication at colder temperatures, then 5W20 might suit your needs well. However, if you want to minimize how often you have to change your oil or worry about running out during the winter months because it evaporates so quickly, 0W20 may be right for you!

Thanks for reading and stay dirty