20 Best Gear Oil For Noisy Differential (2022 Updated)

Have a 2015 Jeep Wrangler. When I 1st got it I changed all the fluids. It’s only been about 10k miles and I felt that the rear diff was just a bit noisy. I checked the level and it was fine. I decided to go ahead and drain the rear so I could remove the cover and get a better look at the gears.

I cleaned everything and inspected the gears. All the teeth were there and not a single chip and no shavings in the drained oil. A recently purchased a heavy duty diff cover from TeraFlex so after getting all the surfaces cleaned and attaching the new cover I had purchased the Lucas synthetic gear oil and filled it up to the fill line and tightened everything down.

Took it for a spin and WOW! The gear oil in combo with the thicker cover all the noise coming from the rear was gone. I’ve decided to do the front diff as well as the transfer case. Been 800 miles since I changed out the diff oil and still purrs nice and quiet.

I recommend this product to anyone especially fellow gear heads who listen to there rides.

This product has always been a great performance product. It will blend well with other gear lube so no need to drain the rearend simply add it to bring up to normal level. If you chose to drain outthe old gear lube first it will give more an far superior protection against wear an heat build up.

Either way Lucas gear lube is the best way to add life to differentials.

Used this for my Subaru WRX and my daughter’s Crosstrek. I was able to maneuver the soft container up to the differential fill plug opening much easier than with the regular (rigid) bottles I used in the past (had to use a hand pump).

Great design. The only downside is that it’s easy to squeeze the packs and spill oil out the top. But the advantages outweigh the disadvantages. I’d definitely use this again.

I use this in a 2008 Nissan Rogue SL AWD with 235,000+ miles on it and have used it in the transfer case and rear differential since it’s first gear oil change from brand new. Still looks clean after 30,000 mile change intervals.

Also use it currently in a 2008 Nissan Titan front axle, 1995 Nissan D21 pickup rear differential and farm equipment gearboxes, all at 30,000 mile or 2 year change intervals regardless. Moisture and corrision reduction and piece of mind.

Exceptional gear oil that does what it’s supposed to do. Lubrication, Protection and Longevity. Valvoline Synthetic gear oil is even better I’m sure. I just don’t use Synthetic gear oil unless required by manufacturer.

This conventional stuff is just as good!.

Greasing fishing reels is problematic, too thick you gum up the works, too light, the gears sling it off, making a mess, attracting dirt to slick everywhere. This seems to be a good compromise between the two, grease and oil for reel gears; to be clear, not for reel bearings, or reel bushings, which requires, and you should use, only a good light weight reel oil.

Yes, grease is used in things like bicycle wheel hub bearings, but in reels you are throwing light weight loads, grease is too thick for any kind of performance in reel bearing. Bicycle hub bearings take more revolutions, higher stress, they need grease.

With the size, price, you can do gear maintenance more often, as you like. Think of the size, price, its helps offset the price of good reel oil, this container should last a long time.

The price of this gear oil is quite good. The feel of the oil is good. It doesn’t smell great, but that is to be expected. I used this oil in the rear differential on my 2007 Cadillac CTS along with a K&W additive.

Prior to that I would hear whine from the differential when on the highway. I drained the diff and found that it was about 0. 3 quart low. The new oil and additive seems to have eliminated the noise.

My only complaint is that the cap seal is not very good. I put a hose on the top to get better access to the differential and the cap would leak as I applied pressure. Tightening the cap simply made it jump the threads and leak more.

There was a fine balance between minimal leaking and torquing the cap. Overall, I am satisfied with my purchase.

Good stuff. Not Swepco but interesting. It’s gear oil. Looks like it. Smells like it. Tastes like it. Yep. It’s gear oil.

Premixed with friction modifier (supposed to not hurt if you do not have a Limited Slip Differiential), easy to transfer without pumps or tubes. Limited capability to get all of the product out of the conatiner depending on the space available under your vehicle.

If you are refilling the whole differiential, then you can transfer the residual from container to container and save the other spout (I needed 3 qts. ) for another project, they seem to fit most 1 qt oil containers.

BEWARE: Buy extra as the soft body can colapse and cause inadvertent spills, thus the need for more than you thought when you statred. Also make sure of exactly how much you need to start with, so you can get the right ammount.

I used all i bought, so I am not sure how these containers will hjold up on the shelf waiting to top off the level if needed in the future. Luckily, this is a project that only nees to be accomplished on rare occasions based on milage and use.

Not hard, but not real easy to do either. Take you time, keep it clean adn seal it up tight and you will not have to worry about it for a long time to come.

I bought my first car in 1969, a new Jaguar E-Type which I have kept in a restored condiion for the past 45 years, now with over 180,000 miles. I recently tried to buy lube for my transmission and rear differential and found that my earlier sources no longer made compatible products.

After doing some internet research I learned about Red Line Synthetic GL-5 Gear Oil, which meets the needs of my limited slip differential, and 75W90 Non-Slip, which won’t harm my transmissions brass syncronizers.

Prior to changing the lubes I was having occasional trouble making smooth up and down shifts and attributed it to my loss of shifting skill over the years but after installing the 75W90 product it all came back, not so much my skill, but the transmission shifting is once again as smooth as it has ever been.

During a recent aggressive acceleration I also determined that my limited slip is also doing what is supposed to with the GL-5 product. I used to worry about finding compatible products that meet the needs of my 45 year old car’s technology, but not after finding Red Line.

Straight after changing my gearbox oil, it was so smooth. Smoother than when I first got it. Some of the guys who own GT4’s who recommended it to me, claims it will outlast my gearbox. So the amount you pay is justified by the smoothness, protection and also the fact you won’t have to change your gearbox oil for another 5 years.

(Another GT4 owner has not changed his oil for 5 years, everytime he takes the motor out he drains the oil into a clean container and re-uses it). Awesome product.

This is what most NASCAR teams use in their diffs. I use it in my 600hp Mustang with a Torsen T2-R differential for road racing. Probably not necessary for drag racing. Torsen diffs work great on road courses but generate a lot of heat.

I don’t use a diff cooler so I need something that can handle high temps.

Very hard to give an accurate answer on this. I think it would require scientific and laboratory tests to really prove how good or otherwise it is. However from a point of gearbox operation it seems fine, that’s all I can say.

very expensive though.

Easier to shift into gear on my 2016 Can Am Outlander 1000R. When it was Hot , sometime’s had to shut the Motor off, for it to go into gear. NOW , its a Pieace of cake going into gear now , Hot or Cold.

I change ALL my fluid’s once a year , regardless of Mileage. I sure DON’T use the factory fluid’s , they are over price and are JUNK ! It’s Redline or Amsoil ! Well enough said. Ciao !.

Ended up changing the front diff, transfer case and rear diff on my 2013 X5. Rear diff was one hole and just sucked it out and replaced with another liter of the liqui moly stuff. Transfer case was harder to fit a small piece of allen and wrench to the fill plug (takes different fluid sold by shell or bmw).

The front diff was the hardest but this kit worked great and the car drives noticeably smoother and quieter. There’s a couple resources for the front diff on the X5 but after the LCI it seems they put some brake or hydraulic lines that weren’t on the older models directly in front of the fill hole.

I came at it from the bottom and debated whether or not to do it since it was so far up my fingers couldn’t reach it to thread the new plug back it. With a bunch of tools it worked out and I measured what came out and refilled with the exact same amount.

So far so good! Liqui Moly FTW!.

Ive used Liqui Moly engine oil and gear oil in my diesel Lexus for many years now and never had any issues. Car runs smoothly and gear changing is easy and quiet. I always change my oils at the recommended intervals according to the service book and Liqui Moly has never let me down yet.

A great brand to use in any car but use the correct viscosity and grade according to your manufactures recommendations.

This fluid already has the limited slip additive. Autozone is the only place I have found that keeps this product in stock.

Used on my personal vehicle; 2001 Chevy 2500 HD Crew Cab for years on the rear. Using the Mobil 1 75W90 on the front with no problems for years as well. No disadvantage, only benefits to using synthetics and if anything, the more we switch to them we (the consumer) save money in the long run by using a better product then dino oil.

The country also would use less oil. A good 2nd choice would be Amsoil. They do not have the market penetration like a major oil company does with Mobil 1 but that may be a good thing?.

I plan on doing a fair amount of towing, so I wanted a synthetic 140 weight gear lube. I bought four quarts of this for the front and rear differentials in my AWD truck. Mobil is a good brand and I cannot imagine ever needing to swap it out again, unless I find myself fording some rivers in the future.

Should provide better protection than the 80W-90 oil that is spec’d. A/A’s retail price for this stuff is borderline ridiculous, but the 40% off online coupon codes they offer from time to time make purchasing some more reasonable.

Bought a few bottles to refill my front and rear diffs on my 2012 Toyota Tacoma double cab standard bed with 35×12. 50 tires after regearing and installing a front air locker. The Lucas SAE 85W-140 gear oil is amazing.

Looks like pouring honey. LOL. After the break-in period after 500 miles, I drained the old oil and refilled with new Lucas Gear Oil. This gear oil is high quality and I’m confident it’ll help with the new gears and lockers I have on my truck.

ECGS recommended conventional Lucas 85W-140 for all differential applications. You can see the testing on their website. The film of Lucas tends to stick to the gears between provides excellent protection.

I used this gear oil in an ATV gearcase. What stood out was the great customer service! The young lady walked up and down the aisle with me helping me find things.

Probably not worth the extra cost of the name, especially if your use is in older vintage farm equipment. Not really a bad product but I would recommend the Travelers Brand for cost especially if you are using this product in vintage equipment that will probably leak.

I hate buying an expensive lubricant only to discover a leak and watch the $$$$ spent just lost. Not bad if using it in newer equipment and I’m sure meets all the lube requirements. Vintage go with the cheaper alternative in my humble opinion.

Using Lucas 80W-90 mineral Gear Oil in 8.8 with Truetrac set up for cornering with T-56 and 750+ HP. Perfect bias. 85W-140 caused inconsistent lockup. It’s Lucas 80W-90 from here out.

This is my first experience with Lucas gear oil but I’ve used several other name brands in the past. I used it for a Yukon Dura Grip install that called for a high quality non-synthetic GL-5 oil and Lucas oil exceeds the GL-5 standard and has the limited slip additive already.

It’s competitively priced too so that makes it a winner in my book. After several days of driving since the install, the differential is very quiet and the limited slip is working like a champ. So far Lucas is a winner for this application!.

Let me say first that I have an older 1991 Chevy pick up truck, I’ve had it for 15 years and it only had 140000 miles on it when I got it. Now 15 years later I have over half a million miles on it. The transmission started slipping almost a hundred thousand miles ago.

I used Lucas oil in my transmission and it stopped slipping immediately. I now regularly top off all the fluids with Lucas oil’s and my truck runs and starts better than ever before.

2000 F350 dually 7. 3 with 299,863 miles. I drained old 85W140. I upgraded to factory finned aluminium cover & 75W140 full synthetic. Truck was easier to push on level surface. Going on 2500 mile road trip next week.

This will provide best data for mpg and rear housing temp differences.

Its a LUCUS product. So you know it’s great quality. And the price is very good also compared to other name brands. I will definitely buy again when needed.

I didn’t realize until recently that my 4×4 Xterra needs more than oil and tranny fluid changes. It turns out 4×4 has rear diff and front diff, both of which require periodic Gear Oil changes. The job was super easy to perform (inlet bolt and outlet bolt) and this product spec and packaging were perfect for it.

Thanks!.

I purchased 3 quarts of this differential oil to service the rear differential on my truck. I think the Valvoline product line offers a great value while still providing a quality product for a guy on a budget like myself.

How often do we change rear diff lube? Not often is my guess. I had to do seals and bearings on a 1998 Mazda B2500 (Ford Ranger clone). Spent the money on name brand seals and bearing, fel-pro cover gasket, right socket to remove the diff spider gear locking cross pin bolt.

Made no sense to buy some no-name, dino gear oil. Doing this job ONCE and I used the synthetic given its long life, resistance to heat and wear. Great stuff.

I’ve got a 2008 GMC Duramax diesel dully and developed a problem in the differential. The locking mechanism started to hang up. I suspected that the clutch plate ramp cam was not releasing the way it should.

My truck is very low mileage for an 2008 (33K) but has done some pretty heavy trailer hauling. I was afraid that it might blow when on dry pavement. I drained the old GM grape juice and poured in Amsoil sever gear lube (75-90) and I have not experienced any lockup for a couple months now.

Fixed what could have been an expensive repair bill. Thanks AMSOIL!!!!Gary.

As many of you know its cold here in the winter -36C here today on Dec 27 2021. I was doing some regular maintenance on the vehicles and decided to change the differential fluids and gear box on my sons Subaru crosstrek with the 6MT, it was a bit premature with only 20k / km but I was curious to see what the break in looked like and how much metal I would find on the drain plug magnets.

Surprise. it was normal fine metallic paste on the front gear box and diff and the rear diff. I decided to use Amsoil to replace the Subaru OEM fluids as we intend this car to be our sons long term vehicle to get him through both learning how to drive and all the way through college and beyond.

I can say that these first few coldest days of the year -30s were a good test for the Amsoil severe gear, the gear box shifted smooth and that helps tremendously in colder temps, I have used Amsoil products in the past and find the peace of mindfulness when performing my own maintenance knowing that I am protecting my investment and as most shadytree mechanics would say by using the good stuff, I guess that’s why I use the products because they work.

Tried this extreme gear to quiet my shifting of gears, especially first gear. It did improve the engaging of the gear but not much in the noise engaging produces. Although if you hold in the clutch for 5 seconds before kicking into gear.

It slides in quietly if your not paying attention you’ll find yourself double checking. It also quiet down the noise at the transmission and overall contributed to a cooler engine. Definitely better that SYN 3.

This should be a no-brainer to anyone who wants to keep their transmission functioning properly. If you’ve ever looked at all the gears, pawls, shafts, bearings, etc. inside a Harley transmission then you understand just how complicated and expensive they can be to repair.

Eliminate the repair expense before it bites you in the wallet by ditching The Motor Company’s recommended “engine lubricants” inside your transmission. All the parts inside those small transmission housings are pushing 600-1200 lbs.

down the highway every time you go for a ride. Why take chances, give all of those parts a fighting chance by using the best lubricant to operate inside that environment. When I change out the Amsoil Severe Gear oil on the bikes I service, I love the way it still looks clean and clear and the drain plug magnet comes out clean after riding 5-10,000 miles.

That’s the difference between gear oil and engine oil in your transmission. Great product.

I am a Master Toyota Certified Technician. I own a 2020 Toyota Tacoma, after installing the severe gear in the front and rear differential’s , I immediately noticed a difference in the way the truck rolled down the road.

Effortlessly and smooth. I have co-workers that have the same trucks; needless to say they were blown away. They are going to service their differential’s with severe gear. Awesome product. I personally wouldn’t use anything but severe gear in any of my trucks.

I put this in my 2017 MK7 6MT 4motion Sportwagen because I was trying to improve the crunchy shifting and eliminate a slight but annoying pinion howl. Immediately it was clear this was much thicker than the stock fluid.

It took a long time to get the required 2. 3qts to flow into the tranny through the narrow nozzle. The first positive thing I noticed was the car seemed quieter. The pinion howl disappeared and gear lash and noise seemed diminished.

The second good thing was how much easier it slotted into gear. There was noticeably less shift effort compared to the watery stock fluid. There are some negatives however. First, my hwy mileage dropped by at least 2mpg and probably more as the weather got colder (mpg drops anyway when it’s cold so hard to say how much).

Secondly, in cold weather shifting is very notchy until the oil warms up and depending on the temp, that could take a while. Starting out at temps below freezing, I often have to double clutch and pull fairly hard just to get it in gear for the first few shifts.

Overall it’s an improvement over stock but I may try something else to see if I can find a happy medium. If you live in a warm climate this would be a great choice but in the cold upper midwest where I’m at, it probably isn’t the best option.

Impossible to say whether this gear oil is going to give the differential on my Infiniti G37 a longer life, but one thing to note is it’s an ester based oil. Not an oil expert but I do know that Nissan uses esters in their $12 per quart conventional oil, which is the recommended factory solution for certain G37 engine ticking and knocking noises, and it apparently works.

Esters are also used in Archoil, which is a $210 per gallon engine oil additive, jet engine oil, and refrigerant oil. Motul is made in France.

Highly recommended and one of the best transmission and gear motor oils for vehicles to use if owners cannot obtain their OEM transmission oil. The only sticking point is the price as it is quite expensive as you normally need around 5 LTRs for a full replacement.

I suppose it reflects the quality of the oil and from a quality brand.

I put this in my 2013 S5 rear differential and after less than 10k miles the diff is shot with a whining sound. Found metal in the oil I drained. This oil is not lubricating teh diff correctly and I am left having to replace the diff which is a 12k$ part at Audi.

Was getting some gear noise under load in boost, turned out the level was pretty low. Ordered 3 liters of LiquiMoly and transmission is quiet again. Since installing the fluid temps have dropped outside and it is a bit notchy first few miles when first starting off, a bit thicker than the factory filled fluid for sure.

But excellent shift quality when it’s hot. Trans has never been smoother/quieter. If your in colder climates might be better off with a slightly thinner fluid.

added to my 2006 BMW 330i and 2012 BMW X3 3.5i x-Drive rear and front diffs for usual fluid change