Lucas differential additive

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Got car issues? Well, we've got the answers! Easily search thousands of entries to find exactly what you're looking for. Need advice on a dealing with a blown head gasket? Oil Leak? Cracked block or leaking radiator? Be sure to leave a comment or question on anything that may interest you. You can also send an email to our pro for direct assistance! A differential leak is not an uncommon leak on many vehicles equipped with a differential.

But how do you know if your vehicle has a differential? The differential in your vehicle accomplishes a variety of tasks all in a small space.

Faq ␘s

The main purpose of the differential in your vehicle is to multiply the power transmission devices. Your vehicle has just one engine but must drive 2 or 4 wheels with that engine.

Most four-wheel drive vehicles have a front and rear differential. For vehicles that are front wheel drive, the multiplication happens inside the transmission, which can technically be called a transaxle.

A transaxle takes one input from the engine and turns it into 2 outputs, one to each of your front wheels. In the case of a 2-wheel drive vehicle that is rear wheel drive, power exits the transmission through the driveshaft and the driveshaft provides a single input into a differential.

Inside the differential that single power input is split into two shafts, the axles, to supply power to both rear wheels. The differential in your vehicle also provides another important drivetrain feature and that is providing the final drive ratio. Even with the gear reduction in your transmission, the driveshafts in your vehicle are spinning very quickly so you need one final gear reduction to reduce the speed.

This requires a ring gear, pinion gear, spider gears and carriers to support them. This set of gears requires specific types of lubricants to make sure things stay cool during normal operation and that wear is kept to a minimum. Along with the gear set, very specific bearings are used to carry the loads on the shaft and keep the gears at exact distances from each other so the gear teeth can engage properly.

Like any lubrication, there are seals to keep the lubricants from running out of your differential. Some differentials put these seals just outside the bearings, while others have the seals all the way at the end of the axle tube.

The 6 Best Gear Lubricants for your Vehicle

Due to different designs, your differential can leak from many different places making it difficult to determine the exact leak location.Your question may be answered by sellers, manufacturers, or customers who purchased this item, who are all part of the Amazon community.

Please make sure that you are posting in the form of a question. Please enter a question. Lucas Oil 75W90 Synthetic Gear Oil is a non-foaming, super slick, long lasting lubricant designed especially for heavy duty or high performance applications where other gear lubricants just aren't good enough. This gear oil contains a special additive package that cushions gears and resists "squeezing out" under extreme pressure situations where other gear lubricants just aren't good enough.

Specially designed to stand up to high temperatures without losing its lubricity. Skip to main content. One-time purchase:. Qty: 1 2 Qty: 1.

How to Fix a Differential Leak

Lucas Oil PK4 75W Add to Cart. Choose how often it's delivered From once a month to once every 6 months. Skip or cancel any time We'll send you a reminder before each delivery.

Get it Monday, May Deliver every:. Set Up Now. Other Sellers on Amazon. Sold by: RevPlanet. Have one to sell? Sell on Amazon. Image Unavailable Image not available for Color:. You can return the item for any reason in new and unused condition and get a full refund: no shipping charges Learn more about free returns.

How to return the item? Go to your orders and start the return Select the ship method Ship it! Only 2 left in stock - order soon. Ships from and sold by Amazon. This fits your.AU Diff Whine. What is the additive to quiet them down???

lucas differential additive

Posts: Slotted Rotors. Post subject: AU Diff Whine. Location: Perth WA, Australia. What is the additive to quiet them down?? Appearently its pretty common in AU series 1's. I droped my car off at ford this morning for the recall job, and they recon that it is not common at all and that there is no additive that they have or can put int to quiet them down. Does anyone know what it is that they put in there to shut em up???? Cheers Guys. Is whine a sign of wear? Mine has whined ever since I got the new gears in, but im not really bothered by the sound.

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Posted: Wed Dec 01, am. Parts Gopher.

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Disco Frank. Fordmods Junkie. Aurora Post subject: The diff Posted: Wed Dec 01, am. Getting Side Ways. My AU1 forte had diff whine and this is what I used to stop it completely Redline Heavy grade Shockproof Gear Oil - full synthetic 85W Any brand of gear oil that's really thick should do the job Works a treat The tickford XR6 AU1 which was built same time has no such whine or clunk either but I still use the same gear oil for best protection.

Post subject: Oil brands Posted: Wed Dec 01, pm. I also use Fuchs Lubricants super gto 10w30 engine oil and I rate them up there with royal purple, gulf western, amsoil, penrite and all the other top shelf brands. Posted: Wed Dec 01, pm.

Posted: Thu Dec 02, am. Posted: Wed Dec 08, am. Posted: Sat Dec 11, am. Posted: Mon Dec 13, pm. Bug wrote: Is whine a sign of wear? Incorrect preload when they rebuilt the diff. Only cure now is to rebuild it again. Stock as a Rock.

lucas differential additive

Our local Ford dealership buys the Holden additive off me, they have had better success with the GM Goodwrench additive than the Ford stuff. If you have trouble getting it let me know and i will get you some.

Can Changing your Transmission Fluid Cause Damage?

Posted: Tue Dec 14, pm. I like the Banana Idea.The environment within a gearbox is extreme. Gears either come into and out of mesh, or they are in constant contact, but the only thing preventing gearbox damage is gear oil.

Not all gear oils work in every situation, though. Read on to find the best gear lubricant to use. Red Line MT Royal Purple Max Gear. Lucas Oil Synthetic Gear Oil. Castrol Syntrax Limited Slip. Whether in a manual transmission, transfer case or differential, all automobiles use gear oil of one form or another. Depending on the configuration of the gears, the oil is required to remedy certain conditions.

Like motor oil, gear oil has specific tasks. The best gear lubricant will prevent the metal-to-metal contact that causes friction and wears gears down, and it removes heat from around gears. The gears sit in a sump and carry oil with them as they turn. Synthetic gear oil offers several advantages over conventional oil that consumers would be wise to implement.

First, it flows better in the cold and retains its initial viscosity in the heat better than dinosaur oil. Second, synthetics retain their properties longer, extending drain intervals.

Gear oil must overcome the high pressure in some differentials. Extreme pressure EP additives help gear oil retain its lubricating qualities in such conditions. This article explains EP additives in more detail than there is space for here. Sulfur was long the EP additive of choice, but its corrosive properties has led some manufacturers to find less volatile substances. Sulfurized synthetic additives are now less reactive, and phosphorus-based additives contribute lubricity, as well as EP properties to gear oils.

Other additives found in gear oils include metal deactivators to prevent corrosion, anti-rust agents, friction modifiers and dispersants. The American Petroleum Institute defines four performance categories of gear oil. GL-4 lubricants have these additives, and are used in differentials that operate in mild conditions. It is used in the most severe conditions, such as hypoid gear differentials.

API MT-1 oil is for manual transmissions that lack synchronizers, thus requiring more thermal stability than GL-5 oils. It remains fluid to degrees Celsius, yet it retains its viscosity even in hot-running, high-performance differentials and rear axles, including limited-slip differentials. It extends drain intervals while reducing wear thanks to its phenomenal shear stability. Manual transmissions require a gear oil with reduced slipperiness to improve synchronizer function.

Its additive package also enables easier shifting in cold temperatures. Like all GL-4 lubricants, MT lacks the sulfur additives that can corrode and damage brass and copper manual transmission components. Its base stock is ester-based, so it is shear-stable in most operating temperatures. Royal Purple enjoys a reputation for high performance and long drain intervals, and its Max Gear lubricant lives up to the hype.

Max Gear is fully synthetic, so it flows in cold temps and retains its viscosity in hot-running, heavy-duty hypoid differentials and other GL-5 applications.

Unlike many other gear lubricants, Max Gear is also suitable for GL-4 applications like manual transmissions and front-wheel-drive transaxles.

Royal Purple manages to satisfy both ratings with its proprietary Synerlec additive package, which does not harm soft metals in synchronizers.

Lucas lubricants have a reputation as simply being a quick fix, delaying costly repairs. While true, Lucas Trans and Diff Lube prevents many such issues from ever occurring. This GL-5 rated lube is extremely slippery, reducing wear and friction in hypoid and limited-slip differentials.

It can smooth operation in aging gearboxes as well, but its high sulfur content suggests it may damage brass bearing cages or other yellow metals in manual transmissions.The design of modern cars includes a number of components and assemblies that are mandatory for all their brands, models, classes, and types.

These are, above all, the engine, gearbox, and brake system. The differential is also on the list. Every single car has a differential, and some vehicles even have a couple of them. The importance of the differential is hard to overestimate. That is why it is necessary to keep it in good condition.

Differential oil is exactly the thing that cares for the differential maintaining.

lucas differential additive

Gear oil prevents the gearbox damage. However, each gear oil works differently in every situation. It is not that easy to choose the best gear oil as it may seem.

It is necessary to know the properties of various gear oils to choose the best gear lubricant. In order to help select the oil for differential correctly, the best gear oils are gathered and presented on the list. They all perfectly fit differential, however, each one has its peculiarities, which should be considered.

Manual gearbox requires very careful treatment and Red Line MT oil provides it. MT secures the necessary friction for most synchronizers of mechanical gearboxes, compared to many other synthetic fluids that are too slippery. Red Line gear oil is suitable for almost any transmission type. The oil belongs to the best gear oil for differential category and ensures excellent protection for the gears and synchronizers.

It provides the balanced fluidity for easy switching in cold climates. Also, MT is safe for brass synchronizers, since it does not contain active sulfur, like most GL-5 oils. It is recommended for GL-1, GL-3, and GL-4, as well as for synchronized gearboxes, in which special fluids are preferred.

Lucas Oil is a synthetic differential fluid. This lubricant perfectly fits the heavy-duty and high-performance applications, for which many other gear lubes are not good enough.

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Lucas Oil is long-lasting and provides superb slickness. It includes a special additive package that secures the softening of gears and prevents from wringing out even when pressure is extremely high. It easily manages the most extreme conditions that other gear oils cannot cope with. However, some vehicles may require using another additive with Lucas Oil to provide the best protection and operation without hesitation.

The 75W90 synthetic gear oil allows fast gear shifting, softening the synchronizers friction. Since it does not maintain active sulfur, it is safe for brass synchronizers.

Red Line oil guarantees truly reliable protection for gears and synchronizers. However, it is not recommended to use it with most manual gearboxes because this gear oil has increased lubricity.

This can disturb the correct operation of the synchronizers and lead to problems with gear shifting. This 75W90 gear oil ensures a stable viscosity for long enough periods of use. It also secures smooth clutch engagement without jerks when shifting gears and makes the rear differential less clunking. The biggest advantage of Honda fluids is that they are originally produced by the Honda Company. In such a way, the producer guarantees the high quality of the fluid.

Honda oil is created for the differentials of Honda and Acura wheel-drive vehicles equipped with the VTM-4 system. This is the only fluid suitable for pouring into the rear-wheel-drive gearbox of VTM-4 vehicles. Its distinguishable feature is a super resistance to the shifts of temperature.My Chevy 96 Impala SS makes a loud noise that comes from the limited slip differential.

The noise started after I changed the oil in the rear end. I have used Lucas 80W oils and about 5oz of an additive for limited slip differential. After driving the car for 10 miles the differential started to make noise. I thought, perhaps I should not use the additive with the Lucas gear oils or perhaps I added too much of it.

I have removed about 1 quart of the oil and replaced it with 1 quart of plain oil, the noise did not go away. Next I have opened the differential and remove all oil and filed it with plain 80W90 oil no additive for limited slip was added. The noise is still there, it is especially loud at very low speed while making turns speed as slow as very slow walk. Before I change the oil everything was OK. Any suggestions what to do next?

The additive is absolutely necessary for your LSD. Get the recommended gear oil and additive I suggest the real OEM GM stuff for both but for sure the additive and add the recommended amount of the additive. Did you fill it on level ground until the fluid came back out the fill plug?

Did you check it later to make sure there were no air bubbles giving you a false reading after filling? What does the additive for limited slip differential do?

What is the difference when you do not have it added to the oil or have too much of it in the oil? A lot of people run into this issue using the cheap or generic stuff.

Get the GM additive at the dealership…. Yep, definately get the GM rear end lube and the posi trac whale oil additive. I had a new Olds and got the disc chirp within miles.

Used the whale oil additive that that quieted it right down. If a limited-slip additive is needed, use the GM product!

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Thanks, I used the GM additive for limited slip differential from the dealership and now everything is perfect. Is the additive actually made of whale oil, as Bing suggested?

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TwinTurbo July 6,am 2.If you are an international customer who ships to a US address choose "United States delivery" and we will estimate your ship dates accordingly.

If you are an international customer and would like to change the currency that prices are displayed in, you can do so here. Image is a representation of this item. Actual item may vary. Change Currency. Transmission Fluid Additive, Anti-Shudder, 16 oz. Shipping restrictions may apply on this part. If you purchase this part, your order can only be shipped by ground.

Lucas Anti-Shudder Additive. Brand: Lucas Oil. Manufacturer's Part Number: Part Type: Transmission Fluid Additives. Volume: 16 oz. Quantity: Sold individually. Lucas Anti-Shudder additive is formulated to eliminate squawk noise in transmissions and differentials—particularly at start-up. Besides reducing noise, the fluid offers smoother shifting, quieter turning, and protection in temperatures as low as degrees F.

This versatile product is an ideal preventative maintenance lubricant for any gear box or hydraulic system. Use Lucas Anti-Shudder additive in automatic transmissions, positrac diffs, transfer cases, and agricultural equipment for squawk-free performance. Summit Racing Verified Purchase. Was this review helpful?

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Date: December 02, Date: August 26,


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