20 Best 40w Synthetic Oil [2024]

Are you looking for the best 40w Synthetic Oil? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling 40w Synthetic Oil.

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# Preview Product
1 Valvoline European Vehicle Full Synthetic SAE 5W-40 Motor Oil 5 QT Valvoline European Vehicle Full Synthetic SAE 5W-40 Motor Oil 5 QT
2 Valvoline VR1 Racing SAE 40 High Performance High Zinc Motor Oil 1 QT, Case of 6 Valvoline VR1 Racing SAE 40 High Performance High Zinc Motor Oil 1 QT, Case of 6
3 Castrol 03101 EDGE 0W-40 A3/B4 Advanced Full Synthetic Motor Oil, 5 quart, 1 pack Castrol 03101 EDGE 0W-40 A3/B4 Advanced Full Synthetic Motor Oil, 5 quart, 1 pack
4 Pennzoil Platinum Euro Full Synthetic 5W-40 Motor Oil (1-Quart, Single) Pennzoil Platinum Euro Full Synthetic 5W-40 Motor Oil (1-Quart, Single)
5 Valvoline 4-Stroke Motorcycle Full Synthetic SAE 10W-40 Motor Oil 1 QT Valvoline 4-Stroke Motorcycle Full Synthetic SAE 10W-40 Motor Oil 1 QT
6 Lucas Oil 10299-PK4 Synthetic 15W-40 CJ-4 Truck Oil - 1 Gallon Jug, Pack of 4 Lucas Oil 10299-PK4 Synthetic 15W-40 CJ-4 Truck Oil - 1 Gallon Jug, Pack of 4
7 Castrol 03111C GTX High Mileage 10W-40 Synthetic Blend Motor Oil, 5 Quart Castrol 03111C GTX High Mileage 10W-40 Synthetic Blend Motor Oil, 5 Quart
8 Castrol Edge 5W-40 A3/B4 Advanced Full Synthetic Motor Oil, 5 Quart Jug Castrol Edge 5W-40 A3/B4 Advanced Full Synthetic Motor Oil, 5 Quart Jug
9 Valvoline Premium Blue Extreme SAE 5W-40 Full Synthetic Diesel Engine Oil 1 GA, Case of 3 Valvoline Premium Blue Extreme SAE 5W-40 Full Synthetic Diesel Engine Oil 1 GA, Case of 3
10 Mobil 1 FS European Car Formula Full Synthetic Motor Oil 0W-40, 5 Quart Mobil 1 FS European Car Formula Full Synthetic Motor Oil 0W-40, 5 Quart
11 Pennzoil Ultra Platinum Full Synthetic 0W-40 Motor Oil (1 Quart, Case of 6) Pennzoil Ultra Platinum Full Synthetic 0W-40 Motor Oil (1 Quart, Case of 6)
12 Red Kap Men's Utility Pant with Mimix, Charcoal, 40W x 34L Red Kap Men's Utility Pant with Mimix, Charcoal, 40W x 34L
13 Valvoline Premium Blue One Solution SAE 15W-40 Diesel Engine Oil 1 GA Valvoline Premium Blue One Solution SAE 15W-40 Diesel Engine Oil 1 GA
14 Valvoline High Mileage with MaxLife Technology SAE 10W-40 Synthetic Blend Motor Oil 5 QT (Packaging... Valvoline High Mileage with MaxLife Technology SAE 10W-40 Synthetic Blend Motor Oil 5 QT...
15 Motul 7100 4T 10W-40 Synthetic Oil 4 Liters (104092) Motul 7100 4T 10W-40 Synthetic Oil 4 Liters (104092)
16 Mobil 1 Turbo Diesel Truck Full Synthetic Motor Oil 5W-40, 1 Gal Mobil 1 Turbo Diesel Truck Full Synthetic Motor Oil 5W-40, 1 Gal
17 Amazon Basics Full Synthetic Motor Oil, 5W-40, Euro Formula, 1 Quart, 6 Pack Amazon Basics Full Synthetic Motor Oil, 5W-40, Euro Formula, 1 Quart, 6 Pack
18 Triax Fleet Supreme ESP 15W-40 API CK-4 Full Synthetic Diesel Engine Oil, Friction Optimized and... Triax Fleet Supreme ESP 15W-40 API CK-4 Full Synthetic Diesel Engine Oil, Friction Optimized and...
19 Castrol EDGE 5W-40 A3/B4 Advanced Full Synthetic Motor Oil, 1 Quart, 6 Pack Castrol EDGE 5W-40 A3/B4 Advanced Full Synthetic Motor Oil, 1 Quart, 6 Pack
20 Liqui Moly 2332 Leichtlauf High Tech 5W-40 Engine Oil - 5 Liter Liqui Moly 2332 Leichtlauf High Tech 5W-40 Engine Oil - 5 Liter
SaleBestseller No. 1
Valvoline European Vehicle Full Synthetic SAE 5W-40 Motor Oil 5 QT
  • ADVANCED PROTECTION IN EUROPEAN VEHICLES agains the four main causes of engine breakdown: wear friction heat and deposits
  • EXTRA WEAR PROTECTION vs. industry and OEM standards with advanced anti-wear additives
  • SUPERIOR PERFORMANCE FOR EUROPEAN gasoline and diesel engines
  • EXCEPTIONAL HIGH/LOW TEMPERATURE PROTECTION defends your engine no matter the climate or driving conditions
  • MEETS OR EXCEEDS ALL REQUIREMENTS of API SN, ACEA A3/B3, A3/B4, MB 229.5, 229.3, & 226.5, VW 50200/50500 & 50501, BMW LL-01 & LL-14FE+, Porche A40,...
Bestseller No. 2
Valvoline VR1 Racing SAE 40 High Performance High Zinc Motor Oil 1 QT, Case of 6
  • Race-level protection for high performance engines
  • High zinc and phosphorus for extreme wear protection
  • Formulated to maximize horsepower
  • Anti-foam system protects during extreme stress
  • Compatible with gas and full or part-alcohol fuels
Bestseller No. 3
Castrol 03101 EDGE 0W-40 A3/B4 Advanced Full Synthetic Motor Oil, 5 quart, 1 pack
  • 42 Percent Better Rating On Fighting Power Robbing Deposits
  • Superior Engine Protection Vs Conventional And Synthetic Blend Oils
  • Superior Performance Against Deposits, Wear And Oxidation; Bottle Color: Black
  • Meets Mercedes Benz 229. 5 And 229. 3, Porsche A40, Vw 505. 00 And 502. 00, Ford Wss-M2C937-A, Psa B71 2296
Bestseller No. 4
Pennzoil Platinum Euro Full Synthetic 5W-40 Motor Oil (1-Quart, Single)
  • Made from Pennzoil's patented gas-to-liquid PurePlus Technology combined with a high-performance additive system for complete protection
  • Nothing keeps your engine closer to factory clean (based on Sequence VH and M-111 sludge test using SAE 0W-40)
  • No other leading motor oil provides better protection from friction (based on Sequence IVA wear test using SAE 0W-40)
  • Provides better fuel economy (meets the requirements of MB 229.5 which includes Fuel Economy Improvement (FEI) requirement as determined in industry...
  • Formulated to deliver faster low-temperature oil flow and protection in extreme heat
SaleBestseller No. 5
Valvoline 4-Stroke Motorcycle Full Synthetic SAE 10W-40 Motor Oil 1 QT
  • Full Synthetic Formula Helps Maximize Power And Acceleration
  • Formulated To Provide Outstanding Wet Clutch Protection For Maximum Power Transfer And Smooth Shifting
  • Added Protection Against Harmful Deposits That Can Decrease Engine Performance
  • Excellent Wear And Corrosion Protection To Help Keep The Engine Performing Its Best
Bestseller No. 6
Lucas Oil 10299-PK4 Synthetic 15W-40 CJ-4 Truck Oil - 1 Gallon Jug, Pack of 4
  • For best performance, follow the manufacturer's recommendations in your vehicle owner’s manual.
Bestseller No. 7
Castrol 03111C GTX High Mileage 10W-40 Synthetic Blend Motor Oil, 5 Quart
  • Superior detergency that helps prevent deposit build up
  • Superior oil burn off protection versus leading conventional oils
  • Seal conditioners help reduce leaks; Bottle Color: Green
  • Advanced additives that help prevent engine wear
SaleBestseller No. 8
Castrol Edge 5W-40 A3/B4 Advanced Full Synthetic Motor Oil, 5 Quart Jug
  • Castrol Edge Euro Car Fluids Are Engineered With Fluid Titanium Technology To Transform Under Pressure, Increasing Its Film Strength To Prevent Oil...
  • Castrol Edge Euro Car Product Range Has Been Optimized To Meet The Stringent Requirements Of The Various European Automobile Manufacturers Association...
  • Many European Vehicles Are Equipped With Ultra-Efficient, High Performance Engines That Generate Extreme Pressure And Operate At High Temperatures....
  • For Use In Both Gasoline And Light Duty Diesel Applications And Recommended By World-Leading Car Manufacturers
SaleBestseller No. 9
Valvoline Premium Blue Extreme SAE 5W-40 Full Synthetic Diesel Engine Oil 1 GA, Case of 3
  • “The Only One“ endorsed and recommended by Cummins
  • Superior synthetic base stocks provide faster, safe starts during freezing weather and enhanced thermal properties for hot weather operations
  • Outstanding oxidation resistance supports long oil life in heavy duty engines
  • Superior wear protection for hardworking heavy-duty trucks and equipment
Bestseller No. 10
Mobil 1 FS European Car Formula Full Synthetic Motor Oil 0W-40, 5 Quart
  • Mobil 1 Fs European Car Formula Full Synthetic Motor Oil 0W-40 Helps To Extend Engine Life Even In Severe Conditions
  • Helps To Control Oxidation To Prevent Oil Breakdown And Maintain Excellent Viscosity For Up To 10,000 Miles Between Oil Changes
  • Provides Outstanding Engine Wear Protection And Performance With Uniform Synthetic Oil Molecules For Better Friction Reduction
  • Keeps Your Engine Running Like New By Working To Prevent Damaging Deposits And Sludge Buildup
Bestseller No. 11
Pennzoil Ultra Platinum Full Synthetic 0W-40 Motor Oil (1 Quart, Case of 6)
  • Full synthetic 0W-40 engine oil made from natural gas, not crude, using Pennzoil's patented gas-to-liquid PurePlus Technology
  • Feel the difference of next level performance, on or off the track, with Pennzoil Ultra Platinum, motor oil designed to deliver complete engine...
  • Pennzoil 0W-40 is a carbon neutral motor oil, achieved through verified Nature Based Carbon Credits that offset the CO2 lifecycle emissions
  • Helps protect engines from loss of power and provides better fuel economy—drive on average an extra 550 miles per year (versus a dirty engine)
  • Pennzoil Ultra Platinum 0W-40 is the only motor oil trusted to be factory fill in every Chrysler SRT8 HEMI engine, and the SRT Viper (Chrysler, HEMI,...
SaleBestseller No. 12
Red Kap Men's Utility Pant with Mimix, Charcoal, 40W x 34L
  • Touchtex Technology provides breathable comfort, lasting colors and stain resistance with an even softer hand
  • Built-in MIMIX flex panels provide superior mobility and a comfortable fit so you can bend, squat, and stretch without restriction
  • Slim through seat and thigh with a leg opening that fits over work boots
  • Straight Fit features an updated rise that sits slightly below the waist
  • Two slack-style front pockets, two set-in pockets, left pocket has button closure
SaleBestseller No. 13
Valvoline Premium Blue One Solution SAE 15W-40 Diesel Engine Oil 1 GA
  • One Solution Technology Suitable For A Wide Range Of Heavy-Duty Engines Including Diesel, Gas And Natural Gas Applications
  • “The Only One“ Endorsed And Recommended By Cummins
  • Outstanding Oxidation Resistance Supports Long Oil Life In Heavy Duty Engines
  • Superior Wear Protection For Hardworking Heavy-Duty Trucks And Equipment
SaleBestseller No. 14
Valvoline High Mileage with MaxLife Technology SAE 10W-40 Synthetic Blend Motor Oil 5 QT (Packaging...
  • 40% BETTER WEAR PROTECTION than the industry standard with enhanced anti-wear additives, keeping critical engine components safe and preventing metal...
  • EXCEPTIONAL TEMPERATURE PROTECTION no matter the weather with superior viscosity modifiers to ensure oil flows more easily, coats more completely, and...
  • ENHANCED FRICTION PERFORMANCE HELPS MAXIMIZE POWER with advanced friction-fighting agents that properly lubricate moving parts and help your older...
  • REDUCE SLUDGE, DEPOSITS, CORROSION, AND RUST with added detergents and anti-corrosion additives, sustaining your engine’s performance and preventing...
  • REFRESH AGING SEALS AND PREVENT LEAKS both inside and outside your engine with premium seal conditioners
SaleBestseller No. 15
Motul 7100 4T 10W-40 Synthetic Oil 4 Liters (104092)
  • Meets the following standards: API SL/SH/SG and JASO MA
  • Recommended for all 4-stroke motorcycles with catalytic converters
  • Ester technology improves engine response
  • Proprietary extreme pressure formula to protect the gearbox
  • Low sulfur and phosphorus formula for bikes fitted with catalytic converters
Bestseller No. 16
Mobil 1 Turbo Diesel Truck Full Synthetic Motor Oil 5W-40, 1 Gal
  • Mobil 1 Turbo Diesel Truck Is Designed For Modern Diesel Truck Engines, Delivering Long Drain Capability, Exceptional Performance, And Potential Fuel...
  • Meets Or Exceeds The Demanding Specifications Of Major Truck Manufacturers - One Engine Oil Can Be Used For Mixed Fleet Operations
  • Recommended For Use In All Super High-Performance Diesel Applications, Including Low Emission Engines
  • Helps Engines Last Longer By Reducing Low-Temperature Sludge Buildup And High-Temperature Deposits
SaleBestseller No. 17
Amazon Basics Full Synthetic Motor Oil, 5W-40, Euro Formula, 1 Quart, 6 Pack
  • For best performance, follow the manufacturer's recommendations in your vehicle owner’s manual.
  • Formulated for longer drain intervals
  • Helps prevent build up that can cause rust and corrosion
  • Reduces friction for less engine wear
  • High resistance to viscosity and thermal breakdown
Bestseller No. 18
Triax Fleet Supreme ESP 15W-40 API CK-4 Full Synthetic Diesel Engine Oil, Friction Optimized and...
  • CRP organic, metallic, Moly plating technology for unsurpassed wear protection, oxidation, and high temp stability
  • Friction modified and VI stabilizer pre-boosted; un-rivaled turbo-charger protection; will not create deposits and ash on turbo bearings (will not fry...
  • Contains state-of-the-art dispersal and ash control systems to keep your engine extremely clean
  • Extreme drain intervals capabilities; 25,000-mile drain interval for pickups and 80,000 for class 8 semi-trucks
  • Eliminates the need to clean diesel particulate filters and is for use in virtually all diesel-powered pickups and heavy-duty trucks, both pre 2007...
SaleBestseller No. 19
Castrol EDGE 5W-40 A3/B4 Advanced Full Synthetic Motor Oil, 1 Quart, 6 Pack
  • Specifications: API CF/SN, ACEA A3/B4, BMW Longlife-01, MB Approval 229.3/229.5, Porsche A40, Renault RN 0700/0710, VW 502 00/505 00
  • Castrol EDGE Euro Car product range has been optimized to meet the stringent requirements of the various European Automobile Manufacturers Association...
  • Castrol EDGE Euro Car fluids are engineered with Fluid TITANIUM Technology to transform under pressure, increasing its film strength to prevent oil...
  • Superior engine protection versus conventional and synthetic blend oils
  • Superior performance against deposits, wear and oxidation
Bestseller No. 20
Liqui Moly 2332 Leichtlauf High Tech 5W-40 Engine Oil - 5 Liter
  • Rapid oil delivery at low temperatures, high lubrication reliability at high and low temperatures
  • Long engine service life due to high level of protection against wear, mixable and compatible with commercially-available engine oils
  • Outstanding engine cleanliness, tested with catalytic converters and performance proved with turbochargers
  • Saves fuel and reduces pollutant emission; Optimum oil pressure at all engine speeds, high shear and ageing stability
  • Approvals from vehicle manufacturers for Leichtlauf High Tech 5W-40 include BMW Longlife-01, MB-Approval 229.5, Porsche A40, Renault RN 0700, 0710, VW...

Having trouble finding a great 40w Synthetic Oil?

This problem is well understood by us because we have gone through the entire 40w Synthetic Oil research process ourselves, which is why we have put together a comprehensive list of the best 40w Synthetic Oils available in the market today.

After hours of searching and using all the models on the market, we have found the best 40w Synthetic Oil for 2023. See our ranking below!

How Do You Buy The Best 40w Synthetic Oil?

Do you get stressed out thinking about shopping for a great 40w Synthetic Oil? Do doubts keep creeping into your mind?

We understand, because we’ve already gone through the whole process of researching 40w Synthetic Oil, which is why we have assembled a comprehensive list of the greatest 40w Synthetic Oil available in the current market. We’ve also come up with a list of questions that you probably have yourself.

John Harvards has done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for 40w Synthetic Oil that you consider buying. Your questions might include the following:

  • Is it worth buying an 40w Synthetic Oil?
  • What benefits are there with buying an 40w Synthetic Oil?
  • What factors deserve consideration when shopping for an effective 40w Synthetic Oil?
  • Why is it crucial to invest in any 40w Synthetic Oil, much less the best one?
  • Which 40w Synthetic Oil are good in the current market?
  • Where can you find information like this about 40w Synthetic Oil?

We’re convinced that you likely have far more questions than just these regarding 40w Synthetic Oil, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for 40w Synthetic Oil, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible 40w Synthetic Oil. Make sure that you are only using trustworthy and credible websites and sources.

John Harvards provides an 40w Synthetic Oil buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information.

How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available 40w Synthetic Oil currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

  1. Brand Value: Every brand of 40w Synthetic Oil has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
  2. Features: What bells and whistles matter for an 40w Synthetic Oil?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: This simply is how much bang for the buck you get from your 40w Synthetic Oil.
  5. Customer Ratings: Number ratings grade 40w Synthetic Oil objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their 40w Synthetic Oil.
  7. Product Quality: You don’t always get what you pay for with an 40w Synthetic Oil, sometimes less, and sometimes more.
  8. Product Reliability: How sturdy and durable an 40w Synthetic Oil is should be an indication of how long it will work out for you.

John Harvards always remembers that maintaining 40w Synthetic Oil information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding 40w Synthetic Oil is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly!

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FAQ:

Q: Who makes the best synthetic motor oil?

A: Castrol 03084 Edge. After years of research and experimentation,in 2019,Castrol discovered a groundbreaking new fluid titanium technology. Castrol 03087 Edge. Most premium synthetic motor oils become impure or contaminated after 6-7 months of use. … Valvoline – 881147. … Pennzoil Ultra Platinum. … AmazonBasics High Mileage. … Royal Purple 51530. …

Q: What is the best synthetic CAR OIL?

A: While there are many quality synthetic motor oils on the market, Mobil 1 is most widely considered to be the best synthetic motor oil around. With careful shopping, this premium product can be in a cheap oil change, or covered by an oil change coupon.

Q: What oil is in WD 40?

A: WD-40 is the trademark name of a penetrating oil and water-displacing spray. The spray is manufactured by the WD-40 Company based in San Diego, California.

Q: Does my car need synthetic oil?

A: Check your owner’s manual to determine whether you vehicle requires synthetic oil. Most newer cars require synthetic oil but older cars should run just fine with a conventional oil unless your car has over 75,000 miles on it, in which case a high-mileage oil is recommended.