It is important to have the best viscosity differential oil. Let’s take you step by step, type by type, and find the best viscosity differential oil for you.

Our review process: Show/Hide

Our Top Picks:

Best Overall: Buy: Mobil 1 Viscosity Differential Oil READ REVIEW

Best For Smoother Shifts: Buy: Red Line Popular Gear Oil READ REVIEW

Best For Heavy Duty: Buy: Mobil 1 Differential Fluid READ REVIEW

Best For Older Manual Transmissions: Buy: Royal Purple Viscosity Differential Oil READ REVIEW

Best For Great Price: Buy: Lucas Oil Good Oil READ REVIEW

Best For Outboards: Buy: Quicksilver Viscosity Differential Oil READ REVIEW

Best For Transfer Cases: Buy: Valvoline Viscosity Differential Oil READ REVIEW

Best For Fast Delivery: Buy: Honda Viscosity Differential Oil READ REVIEW

Designed For Transmissions: Buy: Lucas Oil Viscosity Differential Oil READ REVIEW

Best For Country Of Origin: Buy: Red Line Viscosity Differential Oil READ REVIEW

Best Overall: Mobil 1 Viscosity Differential Oil

Buy on Amazon

Mobil 1 line of oil comes in a pretty wide variety of styles, so you can definitely find one that suits your individual preferences and needs. Not everyone likes to purchase oil for their daily usage, but the Mobil 1 Viscosity Differential Oil would be an anomoly. In short, with a 4.9 rating and more than 7656 buyers, the mobil 1 viscosity differential oil stands as the best choice.

Almost all customers opine that the oil is perfect for rv front hubs. Further, they also found that the oil is great for toyota vehicles. Moreover, a few strongly agree that this is oil, which is a lubricant, at the weight / viscosity indicated. In conclusion, the tone of buyers is very positive and we believe that the oil suits the purpose.

• It looks like a van is used for that purpose.
• This is superior to gear lube (gl) ratings under high performance.
• This is what your newer one takes.
• This maintains protection when warmed up.

Best For Smoother Shifts: Red Line Popular Gear Oil

Buy on Amazon

The Red Line Popular Gear 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 months. The red line, a popular gear oil, is great for customer service, too and it provides you with awesome performance. Red line's synthetic gear oil's is designed to provide the highest degree of protection and greatest efficiency for your drivetrain. Also, the oil allows for smoother shifting and it has excellent properties.

Above all, the red line popular gear oil is black and it is best for extremely fast shipping.

Almost all customers quickly discovered that the oil is good for any performance car's manual trans and you will be impressed with the results. Furthermore, a few also found that the oil is suitable for most manual transmissions because slipperyniss may cause gear clash. Moreover, a few say that the oil could be used in the 2008 Honda ridgeline transfer case. In short, buyers found this to be one of the best oils for daily purposes.

• This shifting became noticeably smoother, worked fine and it comes with great stuff.
• This can be used in limited-slip differentials without the use of additional friction modifiers.
• This is perfect for a c5 corvette with limited slip differential.
• This is great for the rear differential on the infiniti g35.

Best For Heavy Duty: Mobil 1 Differential Fluid

Buy on Amazon

The Mobil 1 Differential Fluid's superior materials make sure that it ages well with use. The mobil 1 differential fluid runs great, feels very smooth and it has features for a decent price. Make sure this fits by entering your model number. Moreover, the oil has a crazy good price and it is perfect for great quality.

Above all, the mobil 1 differential fluid can be used in extended service and for aiding in fuel economy performance.

Almost all buyers opine that the oil has kind of a nauseating odor. In addition, they say that the oil is one of the top 2 or 3 best synthetic gear oils to use in an eaton locker type or non - positraction differential. Moreover, they also found that the bottle leaked some oil, but luckily it was late and its own box. In conclusion, for almost all customers, it was what they were looking for.

• This is a much better deal than buying in bulk.
• This is very smooth and it goes with the best.
• Compared to conventional hypoid gear lubricants, mobil 1 synthetic gear lube is 75w.
• It is worth every single penny to have the trust.

Best For Older Manual Transmissions: Royal Purple Viscosity Differential Oil

Buy on Amazon

Compared with other oils in this category, the Royal Purple Viscosity Differential Oil has a convenient design. The royal purple viscosity differential oil is black, is highly recommended and it is made with great stuff. Make sure this fits by entering your model number. In addition, this is used in the final drive and it never looked back.

The oil works great, is very impressive and it works for the rear axles. And, this allows for smooth shifting and it is great for a decent price. Lastly, the royal purple viscosity differential oil is holding strong, has reliable performance and it has added red line.

Almost all buyers opine that the oil is like shifting in a bucket of rocks. Moreover, they say that oil is the cheapest anywhere anywhere. In addition, they say that the vehicle runs a lot smoother with this oil. It is obviously one of the best quality oils out there. With no doubts, this oil passed the test and had very satisfied buyers eager to share their experience.

• This is next and it is designed for rear wheel drive.
• This is designed for use in limited slip differentials which are normally installed in cars.
• Good stuff, meets all specs for non racing gear.
• This is well worth the cost and it makes for a much quieter.

Best For Great Price: Lucas Oil Good Oil

Buy on Amazon

We would, of course, be remiss if we didn't mention luca oil, a good oil for regular use. Lucas oil good oil does the job and it is affordable. Make sure this fits by entering your model number. In addition, this can wait for a great deal and it is made with great stuff.

Finally, the Lucas Oil Good Oil works as expected, comes with part number and it is great for heavy-duty applications.

Most customers quickly discover that the oil would work in the rear differential of your kia. Further, a few say that the oil is a good bottle of gear oil for an old gm car and this worked well.

• This can be used in a 1982 honda express sr gearbox.
• This is used for the front axle of the 2007 Chevy silverado 4x4 ltz 1500 crew.
• This comes with excellent quality and it can be found for a decent price.
• These make for a great buy and it provides great value.

Best For Outboards: Quicksilver Viscosity Differential Oil

Buy on Amazon

We would, of course, be remiss if we didn't mention Quicksilver Viscosity Differential Oil for daily purpose. The quicksilver viscosity differential oil is designed for outboard and sterndrive applications above 75 hp. Make sure this fits by entering your model number. In addition, the oil is black, is highly recommended and it is for extreme pressure. Finally, the quicksilver viscosity differentialoil offers more at a reasonable price and it has features for a lower price.

Most buyers quickly discovered that the oil is 90 weigh quicksilver 858064q01 high performance sae 90 gear lube for mercury outboards and mercruiser sterndrives, 32 oz. In addition, they also found that oil is the recommended lubricant for your lower unit sir. Also, a few say that this is the gear oil for the lower unit, not the engine oil that mixes with gas. In short, buyers found this to be one of the best oils for daily purposes.

• This is easy to use with a pump.
• This lube is for your lower init...not gasoline.
• This looks like a chocolate milkshake, You have moisture getting into your gearbox.
• The premium gear lube is designated for use on the larger outboards.

Best For Transfer Cases: Valvoline Viscosity Differential Oil

Buy on Amazon

For a low asking price, Valvoline Viscosity Differential Oil has managed to overwhelm their customers by packing as many features as they could. The valvoline viscositydifferential oil is designed for great price and it does the job. Make sure this fits by entering your model number. And, it does its job and it is affordable.

Finally, the valvoline viscosity differential oil protects against severe temperatures to help extend service life.

Most buyers opine that the oil is used for gear boxes and rear ends on automobiles. And, they say that the oil does damage to to the lower unit. And, a few say that this lubricant is useful anywhere an api-gl5 or gl4 fluid is specified. So, customers were very happy to recommend it to friends and would-be buyers.

• Formulated with extreme-pressure additives to minimize gear wear from shock loads.
• This is a very good oil for the clock application.
• Helps protect against gear wear from scuffing, scouring, corrosion and pitting.
• This works great and it is for extreme pressure.

Best For Fast Delivery: Honda Viscosity Differential Oil

Buy on Amazon

Next on the list, we've got yet another oil that manages to win our hearts. It's the Honda Viscosity Differential Oil and it's widely considered as the oil that has the most suitable features. In addition, it is good for fast delivery, does its job and it works well. Make sure this fits by entering your model number. Above all, the honda viscosity differential oil is perfect for double check and has a modern style. look look.

Almost all customers quickly discovered that the oil is for a "hypoid gear", then you should be OK to use it. Moreover, a few strongly agree that the oil can be used in the 2007 Honda Rancher 400. And, they strongly agree that this hypoid oil is intended for use in hypoid gearsets ( like those used in shaft drive motorcycles ) and has no practical use. In conclusion, most buyers found the oil suits best, and no one questions it.

• For use at ambient temperatures down to -15 degrees.
• This is used for chain driven rear wheels or 2-stroke engines.
• Special additives protect against wear, scuffing and corrosion.
• Exceeds api service classifications gl-5 and gl-4.

Designed For Transmissions: Lucas Oil Viscosity Differential Oil

Buy on Amazon

If you want nothing but oil that is reliable, this Lucas Oil Viscosity Differential Oil is certainly a wise investment. The lucas oil viscositydifferential oil contains a special additive package that increases lubricity and ensures less gear noise and longer bearing life. Make sure this fits by entering your model number. Also, the oil is made for good value and it comes with great stuff.

The oil is designed especially for heavy duty or high performance applications where regular gear lubricants just aren't good enough. Finally, the lucas oil viscosity differentialoil is good for power steering, makes it much quieter and it is great for a great price.

Almost all customers opine that the oil takes lots of abuse and also it is the cheapest way to go. And, they also found that the oils put off a high-pitched whine. In addition, a few say that the oil comes in a 5 gal bucket like the oil at autozone.

• 20 years of hauling a ski nautique around is long enough between oil changes.
• This is designed to stand up to high temperatures without losing its lubricity.
• This allows for a great deal and it provides great value.
• This is soft and it is made for double checking.

Best For Country Of Origin: Red Line Viscosity Differential Oil

Buy on Amazon

We would, of course, be remiss if we didn't mention the Red Line Viscosity Differential Oil for daily usage. The red line viscosity differential oil can be bought for good value and it can wait for a great deal. Make sure this fits by entering your model number. Also, it has drained old stuff, worked fine and it is made with great stuff.

Above all, the red line viscosity differential oil is designed for great price and it is best for customer service.

Most customers quickly discovered that the oil is great oil for 2015 4runner front and rear differentials. Moreover, they strongly agree that oil can hurt fuel economy, gears, moving parts, rubber materials, etc. Consequently, buyers were very happy to recommend it to friends and would-be buyers.

• This works great, does the job and it is good for your country of origin.
• This is a better experience because the whole truck feels more responsive.
• This will certainly clear things up for you.
• This is a very high quantity ester based stock (synthetic) gear oil.