There are several advantages of having a 5w40 fully synthetic engine oil. In the following post, we will help you to select the best 5w40 fully synthetic engine oils.

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Our Top Picks:

Best Overall: Buy: Shell Rotella 5W40 Fully Synthetic Engine Oil READ REVIEW

Best For High Performance: Buy: Castrol 5W40 Fully Synthetic Engine Oil READ REVIEW

Best For German Car: Buy: Motul Motor Oil READ REVIEW

Best With Fast Shipping: Buy: Liqui Moly 5W40 Fully Synthetic Engine Oil READ REVIEW

Best For Cheap Price: Buy: Shell Rotella Diesel Engine Oil READ REVIEW

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

Best For Older Cars: Buy: Pennzoil 5W40 Fully Synthetic Engine Oil READ REVIEW

Best For Great Price: Buy: Mercedes Benz 5W40 Fully Synthetic Engine Oil READ REVIEW

Best For Outstanding Protection: Buy: Mobil 1 5W40 Fully Synthetic Engine Oil READ REVIEW

Best For Universal Fit: Buy: Motul 5W40 Fully Synthetic Engine Oil READ REVIEW

Best Overall: Shell Rotella 5W40 Fully Synthetic Engine Oil

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The Shell Rotella 5W40 Fully Synthetic Engine Oil's superior materials makes sure that it ages well with use. The shell rotella 5w40 fully synthetic engine oil is running strong and it does for engine noise. Increased shear stability for better viscosity control and optimal engine oil pressure. Further, the oil is effective, is great for track days and it is great for great protection.

The oil offers an enhanced fuel economy capability of up to 1.5%* that can save money in fuel consumption, without compromising engine protection or durability. Most importantly, the shell rotella 5w40 fully synthetic engine oil features exclusive triple protection plus technology, formulated with fully synthetic base oils plus advanced additives to protect against wear, deposits, and oil breakdown.

Almost all customers agree that the oil is great to run the t6 5 40 in your power stroke. Also, they also found that the oil comes in a box with 3 bottles, 1 gallon each. In addition, a few say that the top number 40w means that is the oil 's viscosity at normal operating temp required by the production.

• This is able to get in and lubricate everything.
• This is great for flat tappet cams as well as motorcycles with wet clutches.
• This can truly make you dizzy thinking about.
• It looks like the price has increased dramatically.

Best For High Performance: Castrol 5W40 Fully Synthetic Engine Oil

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The Castrol line of oil comes in a pretty wide variety of styles, so you can definitely find one that suits your individual preferences and needs. The Castrol 5W40 Fully Synthetic Engine Oils are for right off the bat and it has improved gas mileage. Castrol’s motorcycle lubricants include race - proven additives that protect your bike’s hard - working components, enhancing the thrill of your ride and your bike’s performance, while simultaneously protecting three critical zones of your engine. Moreover, it has been at the forefront of motorsports racing and lubricant innovations for 120 years.

Above all, the Castrol 5w40 fully synthetic engine oil is white and it has features for a decent price.

Most buyers agree that the oil is designed to meet the high temperature and high rpm, of many motorcycles. And, they strongly agree that the oil is rated with higher api ratings than most car engines require. Moreover, they strongly agree that the dry clutch does n't get engine oil, so if the engine is recommended for full synthetic there 's no problem for the " dry " clutch. Overall, at the price, they believe that they got a steal of a deal with it.

• This is an advanced, synthetic, premium quality engine oil designed for 4-stroke motorcycles.
• This is compatible with part number, is incredible and it has the best price.
• This is comfortable and it provides better gas mileage.
• Excellent share stability to prevent viscosity breakdown.

Best For German Car: Motul Motor Oil

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The features department is where Motul Motor Oil truly manages to shine. The motul motor oil can be used in vehicle engines instead of motor oils refined from crude oil, and often provides superior mechanical performance over traditional motor oil, including increased gas mileage and reduced engine wear at extreme temperatures. Include conventional, synthetic, diesel, bio - based, hybrid ( blends of conventional and synthetic ), and recycled oils. Moreover, it is a full synthetic oil, meaning crude oil is not used in making it.

The oil is suitable for leaded or unleaded gasoline, diesel fuels and lpg. And, the oil works as expected and it has better throttle response. Above all, the motul motor oil is great with an awesome price and it is excessive.

Almost all customers quickly discovered that the oil would ship with nice bubble wrap and secured in a bag and then the next time it's lost in a box shifting around, potentially getting damaged or puncured and then somehow leaking. In addition, they say that the oil is easy to drip down the bottle. Further, they also found that the oil is a great oil and costs around 85. Overall, most buyers agree that oil suits best, and no one questions it.

• This is great oil for the 2006 vw jetta 2.5l.
• This works great and it can" go with longer engine life.
• This has raving fans for supercars.
• This is great priced oil to meet late model Mercedes specs.

Best With Fast Shipping: Liqui Moly 5W40 Fully Synthetic Engine Oil

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Next on the list, we've got yet another oil that manages to win our hearts. It's the Liqui Moly 5W40 Fully Synthetic Engine Oil and it's widely considered as one of the most convenient oils you can buy. The liqui moly 5w40 fully synthetic engine oil is noticeable and it provides better gas mileage. The Manufacturer says: And we have been raising the bar in terms of quality and service for 60 years. In addition, it is perfect for protection against wear, It runs quieter and has a nice design.

Lastly, the liqui moly 5w40 fully synthetic engine oil is running strong and it is ideal for best quality.

Almost all customers opine that oil is the best oil for bmws, so don’t use anything else. Further, they also found that the oil was for a 2003 Porsche boxster, damn car needed two of these, not all of it but most of it. Also, a few also found that this is the only oil that makes the engine come to life after 8 years. In conclusion, for most buyers, Liqui Moly product was what they were looking for.

• This makes for a happy engine/ smooth and crisp.
• This oil does run hot though.
• This will work according to bmw, although the factory fill is an ll.
• This is the best, comes with great stuff and it looks good.

Best For Cheap Price: Shell Rotella Diesel Engine Oil

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Next on the list, we've got yet another oil that manages to win our hearts. It's the Shell Rotella Diesel Engine Oil and it's widely considered as the oil that has the most suitable features. The shell rotella diesel engine oils have more power and higher torque but with higher compression ratios. Increased shear stability for better viscosity control and optimal engineoil pressure. And, it is white, is very smooth and it is compatible with conventional oils.

The oil also produces more soot and also improves low-temperature flow. Further, the oil provides excellent protection against harmful engine wear. Above all, the shell rotella diesel engine oil is made with low ash, goes strong and it is even hotter.

Most customers opine that the oil is made for high - mileage engines. Moreover, they say that oil is a great year - round oil for diesel. Moreover, they say that this oil has been formulated specifically for diesel engines. In short, the tone of buyers is very positive and we believe that oil suits the purpose.

• This is good in a straight 6 jeep.
• This is not intended for 2 - stroke motor.
• This is great in gas engine zero turns.
• Better cold-cranking properties and low-temperature pumpability for reaching critical engine parts faster.

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

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We would, of course, be remiss if we didn't mention liqui moly, fullysynthetic and energy - conserving motor oil for daily use. The liqui moly is fully synthetic and energy - conserving motor oil more smoothly, It is good for peace of mind and has a unique design. The Manufacturer says: Our solutions are largely based on our own recipes, which we permanently test and adapt to the latest technical circumstances. And, this is very happy, lasts longer, it is more responsive and has a nice design.

Lastly, liqui moly, fully synthetic and energy - conserving motor oil is common and it is great for Germany.

Most customers agree that the oil is easy to spill when pouring. Moreover, they say that oil works in the German automotive industry. In addition, a few say that the oil is approved by vw (it says vw 502 on the tub) and it is a high quality oil. Overall, many customers have used the oil for more than a few months without any complaints, and it shows no sign of giving up.

• This is made with good products and it works as advertised.
• This has a grayish color because of a robust additive package.
• This oil 's list price of $ 100.00 is a little far fetched.
• This is made from raw material deliveries, to production, right through to shipment.

Best For Older Cars: Pennzoil 5W40 Fully Synthetic Engine Oil

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The Pennzoil 5W40 Fully Synthetic Engine Oil should be able to handle its purpose and duties with ease. The pennzoil 5w40fully syntheticengine oil is running strong and it performs as expected. Make sure this fits by entering your model number. Further, it is made from pennzoil's patented gas-to-liquid pureplus technology combined with a high-performance additive system for complete protection.

The oil is very quiet, can qualify for free shipping and it is going strong. And, this makes for a great buy and it has features for a lower price. Finally, the pennzoil 5w40 fully synthetic engine oil allows for better fuel economy and it is noticeable.

Most customers found that the oil is actually the “premium” oil for bmw m2. Also, a few also found that the oil works well for 2001 bmw 325i. And, they also found that the oil is porsche a40 approved to add to that has an hours rating of 3.6. Without any doubt, this oil passed the test and had very satisfied buyers eager to share their experience.

• This is great oil for a fiat 500 abarth.
• The only fca certifications listed for this oil are ms 12991 & ms 10725.
• Exceeds the following industry requirements: api sp and all previous categories; acea a3/b3, a3/b4.
• This makes the difference in wear and tear.

Best For Great Price: Mercedes Benz 5W40 Fully Synthetic Engine Oil

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The Mercedes benz 5w40 fully synthetic engine oil should be able to handle its purpose and duties with ease. The Mercedes Benz 5W40 Fully Synthetic Engine Oil is green and it is highly recommend. Make sure this fits by entering your model number. And, it works with part number and it can search for brand name. Most importantly, the mercedes benz 5w40 fullysynthetic engineoil comes with excellent service, makes for a great buy and it is for oil pan.

Most buyers find that the oil is the gas engine motor oil. In addition, they say that the oil is however, you will have to use 5w-30. In addition, they strongly agree that this is the oil to use according to Mercedes Benz and what they " factory fill " all their engines with according to the dealership. Therefore, buyers were eager to recommend it to friends and families.

• This works well for 2006 ml350. Make sure you buy your filter as well.
• This will have a computer system to determine when your oil needs changed.
• This takes 7 4 quarts, according to the Mercedes Benz website.
• Genuine mercedes-benz fully synthetic engine oil.

Best For Outstanding Protection: Mobil 1 5W40 Fully Synthetic Engine Oil

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The Mobil 1 5W40 Fully Synthetic Engine Oil's superior materials makes sure that it ages well with use. The mobil 1 5w40fully syntheticengine 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 maintains its viscosity and has enhanced oil film strength, helping to reduce engine scuffing and bore polishing. And, it offers outstanding wear protection, oil consumption control and performance reserve. Finally, the mobil 1 5w40 fully synthetic engine oil reduces low-temperature sludge build-up and high-temperature deposits through excellent thermal and oxidation stability.

Almost all customers found that the oil is a lot cheaper than on Amazon. Moreover, they also found that the oil is widely available everywhere, including the truck stops. In addition, they say that note: if this is an oil that is recommended based on your engine and the location you live.

• Exceptional resistance to high-temperature varnish and low-temperature sludge deposits to help keep engines clean.
• This provides wear protection and reduces oil consumption with its shear stability.
• This is perfect for summer evenings and it is usable.
• This has extended engine life and it goes well with roadkill.

Best For Universal Fit: Motul 5W40 Fully Synthetic Engine Oil

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We would, of course, be remiss if we didn't mention Motul 5W40 Fully Synthetic Engine Oil for regular use. The motul 5w40 fully synthetic engine oil is perfect for automotive accessories and it is ideal for oil pan. The Manufacturer says: Capitalizing on our expertise to meet the constant demand to improve performance, Motul has a wide range of lubricant products for automobile and powersports applications. These are a complete line of heavy-duty shop products.

The oil is good for engine noise, is very happy and it is made to lower engine noise. And, oil is common and it is highly recommend. Above all, the motul 5w40 fully synthetic engine oil is supercharged and it is made for universal fit.

Most buyers quickly discovered that the oil is perfect oil for cars with modified engines. Moreover, a few strongly agree that the oil is perfect for tuned turbocharged four cylinders running e85.

• This is a good choice for street use with 5k oil change intervals.
• This is great with great stuff and it has decreased operating temperature.
• This is great oil for a bmw 435i.
• Have more stable oil pressure regardless of operating conditions.