Automotive Accessories

10 Best Conventional Motor Oil Consumer Reports 2020 | Reviewed

When it comes to the car’s maintenance, some people are really concerned about their vehicle’s performance, presentation, and overall outlook. They are very picky in choosing car’s accessories, handing their car to a certain mechanic, or choosing the brand of conventional motor oil. 

Choosing the right conventional motor oil for your vehicle is of utmost importance because it decides your car’s engine performance. Hence, it is one of the most prime decisions one has to take. Conventional motor oils are made directly from crude oils and not from any chemical substances as is the case with synthetic oils. 

Moreover, conventional motor oils are pretty affordable and provide all the basic services of protection to your engine. Most automakers and car mechanics prefer using conventional motor oils due to its organic origin, affordability, and above-average performance. 

However, when it comes to buying a conventional motor oil for your vehicle, there is a vast variety of brands available in the market. Seeing all this variety leaves the buyer in a perplexing situation. To help you overcome this issue, we have listed down ten best conventional motor oils from the market today.

Top 10 Best Conventional Motor Oil Consumer Guide

These motor oils are selected under the guidance of expert reviews and automakers’ feedback. There is no chance that you may go wrong with any of these choices. A buyer’s guide and some frequently asked questions, in the end, may be of great help to help you choose the right conventional motor oil for your type of vehicle.

1. Quaker State Advanced Durability Conventional 5W-30 Motor Oil

Quaker State Advanced...
  • Protects against corrosion and contains acid...
  • Meets or exceeds North American warranty...
  • Provides stay in grade viscosity throughout...
  • Advanced Durability Motor Oil is formulated...

If you are in search of an oil brand that has been in the market for almost a century and is considered among the top-notch motor oil brands, then consider trying the Advanced Durability Conventional 5W-30 Motor Oil by Quaker State. 

This motor oil from Quaker State is undoubtedly the best when it comes to quality and performance. Its viscosity is rated between 5W-30W. Its label also suggests that this conventional motor oil has been approved by the American Petroleum Institute (API). 

This motor oil provides twice more wear protection than standard conventional oil. It also inhibits rust and corrosion. The oil is environmentally-friendly and also stable at wide ranges of temperature and weather. 

Overall, the Quaker State Advanced Durability Conventional Motor Oil can be a great choice because this oil maintains viscosity rating from the time you start using it till the time of changing the oil. It gives the vehicle’s engine complete protection and enhances its performance efficiently.

PROS
  • Approved by the American Petroleum Institute
  • Environmentally-friendly
  • Adequate viscosity range
  • Increases the lifespan of the engine
  • Optimal performance
  • Anti-wear protection
  • Rust and corrosion inhibitors
CONS
  • Not the best for diesel engines
  • A bit pricey

2. Formula Shell Conventional 10W-40 Motor Oil

Formula Shell Conventional...
  • For best performance, follow the...
  • Protection for extremely high temperatures
  • Protection against harmful deposits and...
  • May be used at any time in an engines...

If you are someone with a heavy-duty truck, trailer, or pick-up vehicle, then consider getting the Formula Shell Conventional 10W-40 Motor Oil. This motor oil efficiently lubricates the engine like butter. It can lubricate the most damaged engine with its heavy-duty performance.

This motor oil by Shell saves extra money by providing all the facilities the additional additives provide. This conventional motor oil has viscosity rating of 10W – 40 which is quite amazing. Moreover, this motor oil inhibits corrosion and keeps the engine free from extra impurities and dirt. 

All in all, the Formula Shell Conventional 10W-40 Motor Oil enhances the performance, durability, and reliability of the engine. The only drawback of this motor oil is the price it comes with.

Most people choose other motor oil by comparing the prices. However, this motor oil indeed is expensive but does justice to every single penny by providing outstanding engine performance.

PROS
  • Amazing viscosity rating
  • Environmentally-friendly
  • Formulated with impeccable additives
  • Inhibits corrosion
  • Inhibits oil oxidation
  • Ideal for heavy-duty trucks and trailers
  • Reduces carbon emissions
  • Stable at wide range of temperatures
  • Suitable for heavy-duty diesel engines
CONS
  • Pricey

3. STP 5w30 Pro Formula Motor Oil

STP 5w30 Pro Formula Motor...
  • For best performance, follow the...
  • Scientifically formulated to insulate your...
  • Helps reduce engine wear while maintaining...
  • Controls sludge formation and cleans key...

If you are in search of a brand that offers solid performance and is also affordable, then check out the STP 5w30 Pro Formula Motor Oil. This conventional motor oil is uncommon and rarely used by a multitude of people but is inevitably great.

This motor oil is certified by the American Petroleum Institute (API) and has undergone chemical testing and experiments to confirm its performance. It has a viscosity rating of 5W-30 or 5W-20 which is pretty amazing for commercial vehicles to a bit heavy-duty vehicles as well. 

Overall, the STP 5w30 Pro Formula Motor Oil does what it promises. It provides excellent protection to the engine in extreme weather conditions. This conventional motor oil effortlessly maintains fuel efficiency, improves engine’s performance, and provides the required lubrication to the engine.

PROS
  • Removes impurities from the engine
  • Perfect viscosity ratings
  • Inhibits corrosion and rust
  • Easy to store
  • Contains additional additives to improve performance
  • Prevents engine wear and tear
CONS
  • Less volume
  • Rare and unusual

4. Castrol 03094 GTX 10W-40 Motor Oil

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Castrol 03094 GTX 10W-40...
  • Unique TriShield technology provides superior...
  • Maximum protection against viscosity and...
  • Ultra low friction to improve gas mileage;...
  • Premium, custom made additives enable...

Castrol is one of the few names in the automobile industry that is prevalent from decades. They are known for their high-quality motor oil all over the world. The Castrol 03094 GTX 10W-40 Motor Oil is amongst them and is considered the ‘best’ worldwide.

This conventional motor oil is known for its excellence in removing the sludge of your engine efficiently. It has a viscosity rating of 10W-40 which is more than enough for small to large sized engines. The feature that makes this motor oil amazing is the fact that it reduces fuel consumption rate.

All in all, the Castrol 03094 GTX 10W-40 Motor Oil can serve as a potential choice for most people because it inhibits thermal breakdown. It is stable at a wide range of temperatures and weather conditions. However, this motor oil can be dangerous if used with naked hands and can also harm eyes.

PROS
  • Reduces oil consumption
  • Inhibits thermal breakdown
  • Easy to store
  • Adequate viscosity ratings
  • Anti-wear additives
  • Generous volume
  • Reasonably priced
CONS
  • Might be harmful to eyes and hands if not handled carefully

5. Shell Rotella T4 Triple Protection Conventional 15W-40 Diesel Engine Oil

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Shell Rotella T4 Triple...
  • For best performance, follow the...
  • Formulated for enhanced deposit protection to...
  • Exclusive low ash formulation helps protect...
  • Meets or exceeds API CJ-4 requirements, and...

If you are someone with a heavy-duty truck, trailer, or pick-up vehicle, then consider getting the Formula Shell Conventional 10W-40 Motor Oil. This motor oil efficiently lubricates the engine like butter. It can lubricate the most damaged engine with its heavy-duty performance.

This motor oil by Shell saves extra money by providing all the facilities the additional additives provide. This conventional motor oil has a viscosity rating of 15W – 40 which is quite amazing. Moreover, this motor oil inhibits corrosion and keeps the engine free from extra impurities and dirt. 

All in all, this motor oil by Shell is loved by millions mainly because of its affordable price for diesel engines. This motor oil improves the durability and longevity of the engines by enhancing the overall performance. Moreover, it maintains optimal engine oil pressure and inhibits oil oxidation.

PROS
  • Adequate viscosity ratings
  • Easy to store
  • Environmentally-friendly
  • Reduces oil oxidation
  • Enriched with additives to improve performance of the engine
  • Reasonable price
  • Stable at wide range of temperatures
  • Suitable for heavy-duty diesel engines
CONS
  • Harmful to eyes and skin

6. Valvoline Daily Protection SAE 20W-50 Conventional Motor Oil

Valvoline - 822344 Daily...
  • Extra wear protection designed to help keep...
  • Added detergents help protect against sludge...
  • High quality additives resist motor oil...
  • Meets the API SN Plus classification...

If you are a student and do not have a good amount of cash to spend on your vehicle’s engine, consider checking out the Valvoline Daily Protection SAE 20W-50 Conventional Motor Oil. This motor oil, although extremely cheap, is in no way inefficient. It does its job of improving engine performance amazingly. 

This motor oil is enriched with additives that reduce the wear of the engine and removes all the impurities. It also entails in multiple viscosity ratings from which you can choose from according to your vehicle’s compatibility. This motor oil is injected with detergent ingredients to counter attack sludge – the enemy of the engine. 

Altogether, the Valvoline Daily Protection SAE 20W-50 Conventional Motor Oil is reliable and efficient. It is certified by the American Petroleum Institute (API). However, the only downside to this product is their ungenerous volume and bottle size which makes the customer buy more than one bottle.

PROS
  • Extremely affordable
  • Certified by the API
  • Stable at a wide range of temperature and weather
  • Comes in various viscosity ratings for different vehicles
  • Enriched with detergent additives
CONS
  • Less volume
  • Unusual bottle design

7. Amazon Basics Conventional Motor Oil – 5W-30

AmazonBasics Conventional...
  • For best performance, follow the...
  • Helps prevent build up that can cause rust...
  • Reduces friction for less engine wear
  • High resistance to viscosity and thermal...

If you are looking for a motor oil that improves your fuel consumption and engine performance, then consider buying the Amazon Basics Conventional Motor Oil. This motor oil is recommended by a number of automakers because of its efficiency of reducing oil consumption. 

This motor oil by Amazon Basics comes in a variety of viscosity ratings from which you can select for your type of vehicle. If you have a small-sized, commercial vehicle then consider getting the 5W-30 or 5W-20 viscosity rating motor oil. On the other hand, if you have a heavy-duty truck or trailer, then consider getting 10W-40, 10W-30, or 20W-50 viscosity rating.

Overall, the AmazonBasics Conventional Motor Oil is an amazing deal to grab. It protects the engine from wear and tear due to the anti-wear additives present. It also inhibits rust and corrosion in the engine. Generally, this motor oil is recommended for gasoline engines.

PROS
  • Reduces oil consumption which increases fuel economy
  • Certified by the API
  • Affordable
  • Inhibits rust and corrosion
  • Reduces friction and cleans impurities
  • Stops low-speed pre-ignition problems
CONS
  • Opaque container
  • Doesn’t come with user manual

8. Valvoline – VV155-6PK High Mileage with Max Life Technology SAE 5W-30 Synthetic Blend Motor Oil

Valvoline High Mileage with...
  • Maximizes the life of engines over 75, 000...
  • Thicker anti-wear film protects against...
  • Extra detergents fight sludge and deposits
  • Premium seal conditioners help prevent auto...

If you are looking for a partially synthetic motor oil that is compatible with your vehicle, have a look at the Valvoline – VV155-6PK High Mileage 5W-30 Synthetic Blend Motor Oil. Although, this motor oil is a bit pricey but it does justice to each cent. 

This motor oil by Valvoline is quite popular worldwide due to its impeccable efficiency in improving engine performance. It protects the engine from rust and corrosion by the anti-wear additives present in the oil. It is stable at extreme temperature and weather conditions.

All in all, the Valvoline – VV155-6PK High Mileage Synthetic Blend Motor Oil is best for vehicles that have quite high mileage. It has a viscosity rating of 5W-30 which is amazing for any small-sized, commercial to heavy-duty engines. Moreover, the container is pretty handy and pours easily into the engine.

PROS
  • Amazing engine performance
  • Environmentally friendly
  • Withstand a wide range of extreme conditions
  • Certified by API
  • Resist rust and corrosion
  • Easy to pour bottle
  • Easy to store
  • Reduces friction
CONS
  • Pricey but worth it
  • Volume can be increased

9. Castrol 03060 GTX MAGNATEC 0W-20 Motor Oil

Castrol 03060 GTX MAGNATEC...
  • -Dramatically reduce engine wear
  • -Leave critical engine parts 4X smoother* *...
  • -Superior wear protection on critical engine...
  • -Unsurpassed level of protection against...

Castrol is one of those names in the automobile industry that is prevalent from decades. They are known for their high-quality motor oil all over the world. The 03060 GTX MAGNATEC 0W-20 Full Synthetic Motor Oil is amongst them and is considered the ‘best’ worldwide.

This motor oil by Castrol is enriched with intelligent molecules that adhere to the metal hence called magnetic. This magnetic approach keeps the metal from rusting and corroding. It is stable at extreme conditions and provides outstanding engine performance.

Altogether, the Castrol 03060 GTX MAGNATEC 0W-20 Motor Oil is certified by the API and has passed rigorous testing. It protects the engine from eating which makes it one of the best motor oils. It also offers protection against viscosity breakdown.

PROS
  • Affordable
  • Certified by API
  • Protect against viscosity breakdown
  • Reduce engine wear
  • Easy to store
  • Stable at extreme conditions
CONS
  • Ungenerous volume

10. Lucas Oil 10679 10W-30 Petroleum Oil

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Lucas Oil 10679 10W-30...
  • Lowers oil temperature
  • Minimizes metal fatigue
  • Improves pressure in worn engines
  • Contains the high levels of zinc necessary to...

Last but certainly not the least, we have the Lucas Oil 10679 10W-30 Petroleum Oil. This conventional motor oil provides amazing engine protection which enhances performance and longevity. This motor oil contains high levels of ZDDP (Zinc) that is essential to protect flat tappet cams, lifters, and pushrods.

Moreover, this motor oil gives amazing thermal stability in extreme hot temperatures. It also inhibits rust, corrosion, and cleans any impurities. This motor oil comes in multiple viscosity ratings of 10W-30, 10W-40, and 20W-50. You can select any based on the compatibility with your vehicle type.

All in all, the Lucas Oil 10679 10W-30 Petroleum Oil is amazing in what it does. It protects the engine from wear and tear due to the anti-wear additives present. This motor oil improves the durability and longevity of the engines by enhancing the overall performance.

PROS
  • Provides excellent thermal stability
  • Comes in multiple viscosity ratings
  • Inhibits rust and corrosion
  • Contains ZDDP that aids in protection
  • Environmentally-friendly
  • Stable at extreme hot temperatures
CONS
  • Expensive

Best Conventional Motor Oil Consumer Buyer’s Guide

Before getting your hands on any brand of motor conventional oils, understand the basic concepts and requirements of your vehicle. These would help you choose the right brand of conventional oil  that goes hand in hand with your type of vehicle. 

Viscosity 

Vehicle’s conventional motor oil viscosity indicates the ease with which the oil can be poured at a particular temperature. It is obvious that thinner oils can be poured easily as compared to thicker oils due to the difference in their viscosities. However, if you are to compare the two, the former reduces friction and also improves the performance of the vehicle. 

Basically, viscosity is the measure of the fluid’s thickness or consistency depending on temperature. A good motor oil must behave accordingly with changes in temperature. If motor oil is treated with extreme heat, it must become thinner. However, if it is treated with extreme cold temperatures, it must become thicker. The best range of viscosity for a vehicle must be in between 5W-20 or 5W-30. 

Product Label 

The product’s label says a lot about the product’s quality and longevity. A good conventional motor oil must be stable at all ranges of temperature and weather. The oil must be approved by an authorized petroleum institute of your country and must pass the energy conserving test. Also, before buying a motor oil, check the label for the category of the vehicle type that motor oil is meant for. 

Manufacturer’s Recommendation 

If you plan on changing your vehicle’s motor oil type, take advice from your car’s automaker or a trustworthy car mechanic to get the right piece of suggestion. Also your vehicle’s manual or manufacturer can give an idea of whether it is right to change the motor oil type from synthetic to conventional. There are some cars that are compatible with any kind of motor oil. 

Engine Oil Additives 

Before buying a motor oil for your vehicle, check out the additives listed on the container. These additives are meant to increase performance and efficiency of the engine oil. Certain additives boosts and uplifts the effectiveness of the motor oil to another level. These may include the following. 

  • Dispersants
  • Detergents
  • Friction Modifiers
  • Antioxidants
  • Pour-Point Depressants
  • Anti-Wear/Anti-Friction Agents
  • Rust and Corrosion Inhibitors
  • Viscosity-Index Improvers
  • Foam Inhibitors

Is Full Synthetic Oil Better?

Some experts believe that synthetic oil is better for the engines as compared to conventional oil. They say so because synthetic oil has less impurities as compared to conventional oils. Another advantage of synthetic oil is that it can last a complete year or in other words mileage of 10,000 to 15,000 miles which is an amazingly great amount of period.

Is thicker oil better for older engines?

Yes, thicker oil is better for older engines. This depends on the viscosity of the motor oil on how well the oil flows in the engine. Viscosity is a very important factor to consider before buying a motor oil. Modern or new cars work pretty well with thinner oils due to fast lubrication. On the other hand, old cars require thick motor oil to avoid friction and oil loss.

What does the label on a motor oil container mean?

The label on a motor oil container indicates whether or not the motor oil approves the current SL service rating. This is determined through laboratory and engine tests. Moreover, the SAE (Society of Automotive Engineers) logo on the motor oil’s container indicates that the oil has passed the energy conserving test.

How often should I change the motor oil in my car?

This depends completely on the type of usage you take from your vehicle. If you use your car for lighter everyday activities, then consider changing the oil after 5,000 to 10,000 miles. However, if you do heavy-duty tasks from your vehicle such as towing, stop-and-go driving, or offroading, then you need to regularly change your vehicle’s motor oil.

What is a motor oil’s shelf life?

The shelf life of a motor oil depends on the type of storage where you keep it. If the motor oil’s container is sealed and kept at an ambient temperature, the motor oil can last for years and years. However, if the seal is broken and kept in an environment with unstable temperature conditions, then the motor oil won’t last a very long time.

Is it okay to change my car oil from conventional to synthetic?

If you plan on doing so, take advice from your car’s automaker or a trustworthy car mechanic to get the right piece of suggestion. Also your vehicle’s manual or manufacturer can give an idea of whether it is right to change the motor oil type from conventional to synthetic.

Conclusion 

The conventional motor oils enlisted in this review article are of high-quality and appreciated by a number of masses. It is really difficult to choose the best one among the list because all offer some great benefits in some way possible. They improve and lubricate your vehicle’s engine efficiently. 

To choose the right conventional oil for your vehicle solely depends on the characteristics and mileage of your vehicle. Conventional motor oil type is mostly appreciated by a lot of automakers and automobile experts mainly because of its origin from crude oil. 

All in all, these top 10 conventional motor oils are the best in themselves. They provide the right level of lubrication and improvement to the vehicle’s engine. They keep the engine clean and keep the vehicle going. A car without a good quality of motor oil is completely useless. Therefore, investing in this department should not be taken lightly.

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