If you own a vehicle, you can never deny the fact that gear tends to be a significant automotive part of it. A constant driving force is provided by a gear to your vehicle. You must be knowing that the various components of your vehicle require periodic maintenance and servicing. Gear is not a different component in such a case.
If you want to ensure that your gear performs well over a period of time, its maintenance and servicing are mandatory. A synthetic gear oil undoubtedly serves to be a prime element that can aid in keeping the gear in better working conditions. This article is going to be about the best 75W140 synthetic gear oil.
What is a gear oil?
You must be well aware that the conditions inside your vehicle’s gearbox are characterized by extremity. Either the gears will be in constant contact or they will be coming into and out of mesh. In both cases, gear oil is something that prevents and minimizes the damage done to the gearbox.
This article is going to serve you as an authentic guide about the best 75W140 synthetic oil. It will let you know the reason why gear oils are needed and will also guide you about what factors you should look forward to before investing your resources on them. To simplify your buying decisions we will also be providing you with a product reviews section that will feature the best brands of 75W140 synthetic gear oil present in the market. Let’s proceed.
Why is a gear oil needed?
There are many benefits to using gear oil. First of all, it helps to prevent metal-to-metal contact that can lead to friction. This further results in gears getting worn down. A good quality gear oil also aids in removing the heat that is present around the gears. Being in a sump, gears carry oil as soon as they get turned on. The feature of high viscosity present in a specific gear oil coats the gear and lubricates the bearings as well.
You must keep in mind that synthetic gear oil is a better choice over conventional gear oil as it is characterized by several advantages. A good-quality synthetic gear oil retains its properties for a longer period of time and extends drain intervals. Synthetic gear oil also tends to flow better in the cold and retains the initial viscosity.
Top 5 Best 75w140 Synthetic Gear Oil Reviews
1. Valvoline SynPower Full Synthetic Gear Oil
If you are looking out for a great quality 75w-140 full synthetic gear oil, then in that case this product can serve you the best. It has been formulated to maintain a great level of fluid protection at lower levels. It aids in providing a substantial amount of thermal stability which ensures cleanliness and longer service life.
The presence of special additives in its aid in providing assistance to protect gear teeth from rust and corrosion. It also reduces the unnecessary chattering that occurs in limited-slip differentials. When it comes to manual transmissions, this synthetic fluid works pretty fine.
This 75W-140 full synthetic gear oil is recommended for conventional and limited-slip differential as well as non-synchronized manual transmissions in which API GL-5 or API GL-4 fluid is specified. This product serves to be a great synthetic fluid and that too at a pocket-friendly size.
2. Red Line 57915 75W140 GL-5 Gear oil
This gear oil is characterized by formulas that are fully-synthetic and have been created from polyol ester base stocks. These further help in offering a great degree of lubrication and that too under severe conditions. The high-viscosity index or the VI of this gear oil provides relatively constant viscosity along with film thickness catering to the changes in temperature. The ester base stocks and friction modifiers help in providing added slipperiness which lower operating temperatures.
As compared to synthetics and conventional gear oils, this gear oil provides minimized levels of oxidation and superior shear stability. If you are looking out for an improved level of differential efficiency which ensures better mileage, less wearing, and the highest degree of protection, you can confidently go with this product.
You can use this gear oil on cars and light trucks including Toyota Tundra, Dodge Ram, Ford F-150, Ford Mustang, and Jeep Cherokee. It is recommended for API GL-5, MT-1, MIL-L-2105E, GL-6, and SAE J2360. You must keep in mind to not use this product in manual transmissions or transaxles. This is because extreme levels of slipperiness might cause synchronizer mesh issues. This further may lead to shifting problems.
3. Lucas 10122 75/140 Synthetic Gear Oil
This 75/140 synthetic gear oil is super slick and long-lasting in nature. When it comes to applications that may require heavy-duty or high-performance operations, this synthetic gear oil will work the best. The presence of a special additive package enhances the lubricity and further ensures lesser gear noise. It also helps in providing your gear with a longer bearing life. You can use this synthetic gear oil in limited-slip differentials.
This oil can sustain high temperatures and that too without the loss of its lubricity. Lucas Oil is compatible with Mobil 1, Amsoil, Royal Purple, Red Line, and other high-grade synthetics present in today’s market scenario. In general, this gear oil facilitates the smooth running of your gears, improves your coasting and it can take your fuel mileage up.
This gear oil is extremely budget-friendly. It ensures a great level of performance along with an incredible amount of durability. Its stable viscosity enables it to work well in extreme hot or cold conditions. It can serve its best when it comes to long mileage coverage.
4. Royal Purple ROY01301 Max Gear Oil
This gear oil is basically recommended to be used in truck and automotive front or rear differentials. You can also use this gear oil in manual transmissions and lower gear units of marine engines specifying the use of an API GL-5 or GL-4 fluid. It has been designed to extend gear and bearing life. It also aids in providing a great level of corrosion protection.
When it comes to the case of heavily loaded gears, this gear oil aids to provide maximum protection throughout the drive train. It combines the highest quality synthetic oils with Royal Purple’s proprietary Synerlec additive technology.
It simply allows your gear to run smoothly and quietly for a longer period of time without overhauls. Being formulated with a friction modifier additive. It certainly does not require any additional additives whatsoever. In order to ensure that you get the best performance, you need to follow the manufacturer’s recommendations that have been mentioned in your vehicle owner’s manual.
5. Genuine Ford SAE 75W-140 synthetic Oil
This is one of the best multi-purpose extreme pressure lubricants available in today’s market scenario. It has been formulated for automotive use. It has been manufactured by utilizing high-quality synthetic oils and performance additives. These components aid in improving temperature thermal and oxidative stability. The use of this lubricant also aids in the reduction of operating temperatures.
When it comes to hypoid gears, this lubricant ensures that enhanced wear protection is provided along with excellent shear stability. This lubricant also ensures that the hypoid gears remain protected from corrosion and rust. It caters to the needs of all fill-for-life requirements of the Ford Motor Company. This lubricant is the best choice for conventional as well as limited-slip differentials of passenger cars, vans, buses, and light trucks that tend to operate under mild to severe service conditions.
What factors to look for in the best 75w140 synthetic gear oil? (Buying Guide)
If you want a position driving force within the gear system of machinery, good-quality synthetic gear oil is of great relevance. The best quality gear oil aids in providing your vehicle’s gear system a better performance and a longer lifespan. In order to guide you well about which factors you should consider before investing in particular synthetic gear oil, you need to read this buying guide. The following factors are the most important.
You should always choose to go with gear oil that stabilizes the temperature and ensures the safety of the hydraulic system. It helps in avoiding the gear system from getting damaged or overhauled. These problems may occur due to overheating, high temperatures, and some other activities. A good quality synthetic gear oil characterized by a high level of thermal stability ensures a longer life of the gear teeth.
Viscosity is basically the gear oil’s ability to resist flowing in the machinery’s gear system. Oil fluids that have high flow resistance tend to have a high level of viscosity. Oil fluids having a high viscosity are more durable and improves the performance of your vehicle’s gear system.
In order to provide an appropriate level of drive force, pressure aids in facilitating an oil fluid’s breakdown. A good quality gear oil has the tendency to work perfectly in different ranges of pressure levels. This further aids in making the gear oil perfectly fit for different tasks and conditions.
A good quality gear oil should be able to operate perfectly and that too without losing any amount of lubricity. It should be powerful enough to work under a varying range of temperature conditions. Gear oils that work only in high temperatures and those that work best only in low temperatures should be your second priority.
Any above-mentioned brand of gear oil can do the job for you on the condition that the correct balance of viscosity and API rating has been used. Till now, we are pretty sure that you must have got a detailed and descriptive idea about the best 75W140 synthetic gear oil.
If you have any further queries, let us know about them in the comments section. We will surely be coming up with relevant and credible answers. Also, don’t forget to write your reviews and feedback on this article. Your positive reviews motivate us enough and serve us to present these kinds of authentic information before you. Till next time.