It is important to have the best 5 watt 40 fully synthetic engine oil. We are here to help you pick the right one for your needs from all the best available products in market today.

Our review process: Show/Hide

Our Top Picks:

Best Overall: Buy: Shell Rotella Diesel Engine Oil READ REVIEW

Best With Fast Shipping: Buy: Mobil 1 High Mileage 5 Watt 40 Fully Synthetic Engine Oil READ REVIEW

Best For Engine Noise: Buy: Shell Rotella 5 Watt 40 Fully Synthetic Engine Oil READ REVIEW

Best For High Performance: Buy: Liqui Moly 5 Watt 40 Fully Synthetic Engine Oil READ REVIEW

Best For Older Cars: Buy: Pennzoil 5 Watt 40 Fully Synthetic Engine Oil READ REVIEW

Best For Better Price: Buy: Liqui Moly Fully Synthetic And Energy Conserving Motor Oil READ REVIEW

Best For Extreme Climates: Buy: Pennzoil Carbon Neutral Motor Oil READ REVIEW

Best For German Car: Buy: Valvoline 5 Watt 40 Fully Synthetic Engine Oil READ REVIEW

Best For Wet Clutch Performance: Buy: Castrol 5 Watt 40 Fully Synthetic Engine Oil READ REVIEW

Best For Brand Name: Buy: Mercedes Benz 5 Watt 40 Fully Synthetic Engine Oil READ REVIEW

Best For Worth The Money: Buy: Triax 5 Watt 40 Fully Synthetic Engine Oil READ REVIEW

Best For Outstanding Protection: Buy: Mobil 1 5 Watt 40 Fully Synthetic Engine Oil READ REVIEW

Best Overall: Shell Rotella Diesel Engine Oil

Buy on Amazon

Oil is a must have add-on for your regular use. The Shell Rotella Diesel Engine Oil provides adequate lubrication, it doesn't compete with synthetic oil's overall engine protection and performance. Keep your equipment working in the field while at the same time managing your overall costs of operation. And, the oil price is great, is white and it is inexpensive.

The oil features exclusive triple protection plus technology, formulated with fully synthetic base oils plus advanced additives to protect against wear, deposits, and oil breakdown. Moreover, the oil is used for best value, lasts a long time and it is noticeable. Above all, the shell rotella diesel engine oil provides better low temperature flow and increased fuel economy performance, without compromising durability, compared to conventional sae 15w.

Almost all buyers found that the oil would be at second weight in viscosity anyway. And, a few also found that the oil is a great synthetic oil for turbo gas engines. Further, a few also found that the rotella t6 is a " universal " oil, meaning it carries an api classification on sn / ck-4.

• This is high detergent with no anti - friction additives.
• This is a great oil for snowbike, 2016 ktm 450 xc-f.
• Country of origin : United States.
• Conventional oils form sludge deposits over time, reducing your engine's efficiency and lifespan.

Best With Fast Shipping: Mobil 1 High Mileage 5 Watt 40 Fully Synthetic Engine Oil

Buy on Amazon

We know from years of feedback from readers, amazon sellers, and family and friends what most people want in a convenient and appropriate oil. The mobile 1 high mileage 5 watt 40 fully synthetic engine oil is exactly that - it's a simple oil that hits all the right notes. The mobile 1 high mileage 5 watt 40 fully synthetic engine oil is excessive, is very good and it can be trusted for the highest quality. The manufacturer says: Outperforms our conventional high - mileage oils. Also, the oil is the best, reduces wear and it is professional.

The oil is made for excessive wear and it allows for excellent overall lubrication. Above all, the Mobil 1 High Mileage 5 Watt 40 Fully Synthetic Engine Oil goes ahead and it has the best price.

Most customers opine that the oil is guaranteed to protect them for 15, 000 miles, which means less frequent oil changes. Moreover, they also found that the oil is a 5 quart container of mobil 1 fully synthetic 5w-20 motor oil. Moreover, they also found that the oil is good value for diesel oil. Overall, most buyers agree that oil suits best, and no one questions it.

• This is suitable for stock engine, it runs well and it runs quiet.
• This has an api service grade of sl which is for vehicles 2004 and older.
• I can think of no reason why not.
• This is better for older high - mileage vehicles that require 5w20.

Best For Engine Noise: Shell Rotella 5 Watt 40 Fully Synthetic Engine Oil

Buy on Amazon

The Shell Rotella 5 Watt 40 Fully Synthetic Engine Oil's material feels more premium than its price would suggest. The shell rotella 5 watt 40 fully synthetic engine oil comes with a wide range of specifications and approvals from many of the world's leading engine makers, It is an excellent choice for on-highway fleets, general haul, construction, agriculture, transport operators, and diesel pick-up trucks. Increased shear stability for better viscosity control and optimal engine oil pressure. In addition, it is great for low viscosity, comes with great stuff and it does the job.

The oil provides adequate lubrication, it doesn't compete with synthetic oil's overall engine protection and performance. Further, this is best for track days, is effective and it makes for great wear protection. Most importantly, the shell rotella 5 watt 40 fully synthetic engine oil allows for long engine life and it is best for oil type.

Most customers quickly discovered that oil is a great way to buy oil. In addition, a few strongly agree that the oil is absolutely correct for that engine. Also, they say that the oil guy on Google to see the breakdown of oils, what 's in the oils and how they hold up.

• This is able to get in and lubricate everything.
• 2017 l5p duramax noticed a big difference over Ac Delco oil.
• You need your hard-working engines to keep up with your demanding workload.
• Conventional oils form sludge deposits over time, reducing your engine's efficiency and lifespan.

Best For High Performance: Liqui Moly 5 Watt 40 Fully Synthetic Engine Oil

Buy on Amazon

We would, of course, be remiss if we didn't mention Liqui Moly 5 Watt 40 Fully Synthetic Engine Oil for daily purpose. The liqui moly 5 watt 40 fully synthetic engine oil runs cooler and it is used for best quality. The Manufacturer says: In recent years, we have repeatedly received top marks in the readers’ polls of leading car magazines in Germany. Moreover, the oil is made from raw material deliveries, to production, right through to shipment.

Oil has increased oil consumption, It starts easily and has a great design. Above all, the liqui moly 5 watt 40 fully synthetic engine oil is best for a good deal, It is great with great stuff and has a unique design.

Most customers find that the oil is made in Germany, It is the #1 synthetic oil in the world. Also, they say that oil is the best oil for BMWS period don’t use anything else. And, they say that the 2011 MDX takes 5w20 of oil ... so you should only use 5w20.search for " 5w20 liqui moly " and if they make it, you can use that. In short, most buyers agree that oil is functionally comfortable and no one questions it.

• This is used to use motul, but it runs smoother.
• This is great for the 07 2.5 jetta.
• This oil does run hot though.
• This is very good, It is great for Germans and has a nice design.

Best For Older Cars: Pennzoil 5 Watt 40 Fully Synthetic Engine Oil

Buy on Amazon

We know from years of feedback from readers, amazon sellers, and family and friends what most people want in a convenient and appropriate oil. The Pennzoil 5 Watt 40 Fully Synthetic Engine Oil is exactly that - it's a simple oil that hits all the right notes. The pennzoil 5 watt40 fully synthetic engine oil can be used in both passenger car gasoline and light-duty diesel applications. A first of its kind full synthetic motor oil, pennzoil platinum with pureplus technology converts pure natural gas into high-quality, full-synthetic base oil that contains fewer impurities than traditional, crude oil-derived base oils. And, the oil sounds great, is best for a lower price and it performs as expected.

Most importantly, the pennzoil 5watt 40fully syntheticengine oil is good for power steering, can qualify for free shipping and it makes for a great buy.

Most buyers found that the oil is suggested by a reputable mechanic, This pennzoil 5w40 reduced start up noise significantly, vibrations during hard acceleration and at idle, smoothness of general operation. And, a few strongly agree that the oil is good for the modern Porsche engine. In addition, a few strongly agree that the dealer uses serviced oil changes, and stays with the recommended oil. In short, for almost all customers, the oil was most suitable.

• Formulated to deliver faster low-temperature oil flow and protection in extreme heat.
• The only fca certifications listed for this oil are ms 12991 & ms 10725.
• This works great, allows for better fuel economy and it goes strong.
• This is made from natural gas, not crude.

Best For Better Price: Liqui Moly Fully Synthetic And Energy Conserving Motor Oil

Buy on Amazon

The liqui moly fullysynthetic and energy - conserving motor oil might be a relatively new release, but it's still nothing short of impressive this year, thanks to multiple price cuts and added new features over the past few iterations. The liqui moly, fully synthetic and energy - conserving motor oil is good for extended oil change intervals and the highest demands. The Manufacturer says: And we have been raising the bar in terms of quality and service for 60 years. Also, the oil is a fully synthetic and energy - conserving motor oil for the latest engine concepts (both gas and diesel), such as multi-valve arrangements, variable cam and timing configurations, turbocharging, supercharging, intercooling, etc.

The oil is very good, it is good for peace of mind and has a unique design. Most importantly, the liqui moly, fully synthetic and energy - conserving motor oil, provides instant lubrication after a cold start.

Almost all customers quickly discovered that the oil can be used in a regular gas - powered car, not a diesel. Moreover, they also found that the oil is the best oil for the Mercedes ml320, makes the engine come alive. Further, they strongly agree that the oil has a nice lighter honey brown color to it with a consistent fine viscosity. Consequently, buyers were very happy to recommend it to friends and would-be buyers.

• The best oil for vag products and an extremely conveniently designed spout.
• This is liqui moly 2041 premium 5w.
• This is good for premium quality, does the job and it is comfortable.
• This is perfect for vw 1.8t and 2.0t engines.

Best For Extreme Climates: Pennzoil Carbon Neutral Motor Oil

Buy on Amazon

Next on the list, we've got yet another oil that manages to win our hearts. It's the Pennzoil Carbon Neutral Motor Oil and it's widely considered as one of the most convenient oils you can buy. The pennzoil carbon neutral motor oil is great so far and it is perfect for engineoil filter. Manufacturer says: All our innovation boils down to one thing. Moreover, it looks great, will for excellent value and it is suitable for all car.s.

The oil is ideal for stop-and-go driving, frequent short trips, heavy loads, unpaved roads, and dusty conditions. Also, this is used for track days, It is made for quick delivery and has a nice design. Above all, the pennzoil carbon neutral motor oil price is good, is very happy and it is good enough.

Most buyers agree that the oil is a new engine, follow the car builders ' recommendations. In addition, they say that the oil is good for a newer car. Further, a few strongly agree that oil is the best engine oil on the planet imo.

• This is much cheaper to produce and they offer extremely good pricing, though it fluctuates.
• This is the right stuff for the SRT, including hellcat.
• This is made using cafe cycle under ftp75.
• This does not meet European standards.

Best For German Car: Valvoline 5 Watt 40 Fully Synthetic Engine Oil

Buy on Amazon

We would, of course, be remiss if we didn't mention Valvoline 5 Watt 40 Fully Synthetic Engine Oil for daily purpose. The valvoline 5 watt 40 fully synthetic engine oil price is right, is used for best value and it works with part number. Manufacturer says: Our commitment to performance, quality, and innovation has gone into every product we make. And, this is designed for an easy pour spout and it is great for air filter.

Most importantly, the valvoline 5 watt 40 fully synthetic engine oil has features for the lowest price, is great for the money and it runs much quieter.

Almost all customers quickly discovered that the oil is the first version, the mid-saps oil. Also, they strongly agree that the oil is suitable for many gasoline and diesel applications. Moreover, a few strongly agree that this oil meets all the VW specs, 502, 505 etc. In conclusion, the tone of buyers is very positive and we believe that the oil suits the purpose.

• This can be used in American cars.
• This is a great deal for 507.00 spec oil for use in some VW diesel‘s.
• This is good value for an engine that does "eat some oil.
• This is packaged in cases of three five quart containers.

Best For Wet Clutch Performance: Castrol 5 Watt 40 Fully Synthetic Engine Oil

Buy on Amazon

Castrol offers a variety of oil for personal choice and yet maintains quality in all the variants. The Castrol 5 Watt 40 Fully Synthetic Engine Oil has features for a very good price, makes for a great company and it features the best price. Make sure this fits by entering your model number. These standards can apply to both gasoline and diesel - powered engines and are often more demanding than ilsac/api requirements.

Finally, the castrol 5 watt 40 fullysynthetic engine oil is ideal for wet clutch performance and it is supercharged.

Almost all customers quickly discovered that the oil was designed for European cars. Also, they strongly agree that oil is the best bang for the buck for 100% percent synthetic oil. Moreover, a few strongly agree that the oil fits your ducati motorcycle. In conclusion, buyers found this to be one of the best oils for daily purposes.

• This is great value for a name brand full of synthetic oil.
• This reduces friction between moving surfaces.
• This is suitable for use in automotive gasoline and diesel vehicles where the manufacturer.
• This is for extreme pressure, is very good and it is made for price.

Best For Brand Name: Mercedes Benz 5 Watt 40 Fully Synthetic Engine Oil

Buy on Amazon

Mercedes Benz has been making great oil for years, thanks to a combination of clever design and appropriate materials. Further, it makes for a great buy, can search for brand name and it is perfect for great quality. Make sure this fits by entering your model number. Most importantly, the Mercedes benz 5watt 40fully synthetic engineoil works with part number and it comes with excellent service.

Almost all customers agree that the oil will have a computer system to determine when your oil needs changed. And, they strongly agree that the oil is developed in conjunction with mobile oil for turbo charged engines (you can find the 5w-40 mobile oil on line also) however. Moreover, a few say that this oil is real, mercedes benz 229.5 spec for gas engines. Without any doubt, this product passed the test and had very satisfied buyers eager to share their experience.

• This works well for 2006 ml350. Make sure you buy your filter as well.
• Genuine mercedes-benz fully syntheticengine oil.
• 1 liter / 1.056 US qts.
• This is the gas engine motor.

Best For Worth The Money: Triax 5 Watt 40 Fully Synthetic Engine Oil

Buy on Amazon

The Triax 5 Watt 40 Fully Synthetic Engine Oil is capable of outshining several other oils featured in this list in overall features in its price range. The triax 5 watt40 fully synthetic engine oil offers total fluid conversion for any make or model of tractors, combines, excavators, bulldozers, etc. The Manufacturer says: Triax engine oils are state-of-the-art, friction modified, and optimized with our unique continuously regenerative plating, which provides extreme engine protection through custom-built friction modifiers and stabilizers. Further, this is good for oil changes and maintenance are essential but costly parts of equipment ownership.

The oil is used for power steering fluids and it can qualify for free shipping. Furthermore, it ran smoother and it is organic. Above all, the triax 5 watt 40 fully synthetic engine oil allows dry lubrication, extreme cold rapid starts, significantly reduced wear, improved fuel economy, and an outrageously long fluid life.

Most buyers opine that the oil will help clean the build-up from conventional motor oils. Further, they say that the oil is great for 7.3 powerstroke. Moreover, they say that the oil is improved far beyond api requirements. Obviously, this product passed the test and had very satisfied buyers eager to share their experience.

• This is a top - tier, all-encompassing lubricant line designed primarily for agricultural and construction equipment.
• This is for power steering and it makes for a much quieter.
• This works great, the price is good and it has significantly lowered oil requirements.
• It has state-of-the-art dispersal and ash control systems to keep your engine extremely clean.

Best For Outstanding Protection: Mobil 1 5 Watt 40 Fully Synthetic Engine Oil

Buy on Amazon

Compared with other oils in this category, the Mobil 1 5 Watt 40 Fully Synthetic Engine Oil has a convenient design. The mobil 1 5 watt 40 fully synthetic engine oil is recommended for diesel-powered pickup trucks built by ford, general motors, gmc and Dodge and meets diesel engine requirements of cummins, power stroke, duramax and navistar. If you want total engine protection, excellent fuel economy and a product recommended for applications under warranty, you want mobil 1. The world 's leading synthetic motor oil, it features a proprietary super synthetic.

The oil goes well with roadkill, is great for summer evenings and it is usable. Further, the oil provides outstanding protection for diesel engines. Finally, the mobil 1 5 watt 40 fully synthetic engine oil provides performance beyond conventional motor oils.

Almost all buyers agree that the oil is a lot cheaper than on Amazon. Also, a few also found that the oil is widely available everywhere, including the truck stops. And, they say that note: if this is an oil that is recommended based on your engine and the location you live. Overall, many have used the oil for more than a few months without any complaints, and it shows no sign of giving up.

• This protects at oil temperatures as high as 400 degrees fahrenheit.
• This is engineered for hard-working diesel engines.
• This offers outstanding wear protection, oil consumption control and performance reserve.
• Improved protection against sludge and harmful deposits; excellent fuel economy benefits.