If you're not qualified and/or don't have the correct equipment, don't attempt to perform your own vehicle maintenance. A limited-slip differential (LSD) is a type of differential that allows its two output shafts to rotate at different speeds but limits the maximum difference between the two shafts. Thanks! share or like this page: There are potentially lethal dangers resulting from the vehicle during the procedure. Hypoid oils have additives to help them cope under extreme pressure, but as limited slip diffs still have hypoid gears in, I would assume limslip oil … I just got the basic 80-90W gear oil, about 5 quarts. Note that Penrite make GL-4 and GL-5 versions of ProGear 75W85. It's available in 1, 2.5, 4 and 20 litre containers. Amsoil Severe Gear 75W90:  This is a fully synthetic gear oil from US manufacturer Amsoil. the diff fluid change schedule is every 20k miles, so you are way over due. The front and rear differentials typically use the same type of fluid, unless there is a transaxle built into the front differential. Presumably the n/a 4.2 has the same diff (and possibly the 2.7D?) The transfer case and front/rear differential oils in the LandCruiser 200 should be changed at 40,000km intervals. As for changing the rear differential fluid, the estimated overall cost is a little more at a range of $80 to $150. How Long Does It Take To Charge a Car Battery? In that thread some owners were recommending a fluid change at 4K-5K miles to help avoid the failures others were seeing. No need to add more. I am changing my personal change interval to 120,000 km (75,000 miles) for the rear diff oil change. Limited Slip oil, which contains friction modifiers to reduce squeal and provide smooth power take up. Fluid was black But no shavings on the plug. 75W90 GL-5 Gear Oil Since the rear differential fluid gear oil is thicker it is best to get the differential fluid warm before draining it. It is simply a documenting of the procedure I followed for my own servicing and maintenance. If you’re going to go the cheap route and try to do the replacement job yourself in order to avoid the labor costs, be prepared to get your hands messy. Finally, be sure to clean the contaminants off the other housing components of the differentials. Differentials are what let the wheels of a vehicle rotate at varying speeds, especially when turning a corner. Clean the fill and drain plugs, including the magnet on the drain plug. It would do so every 25k, but I towed a camper so YMMV. … In this case, the front differential will use totally synthetic oil while the rear differential will use a much thicker oil. LandCruiser 200 Differential Oil. It comes in US sizes of 1 quart (946ml)  and 1 gallon (3.79L). In this situation where there’s a transaxle involved, the transaxle will need to be replaced after you drain the old fluid and replace it with new fluid. DIFFERENTIAL PROBLEMS AND SYMPTOMS: If one of the bearings in your differential becomes loose, or if thin differential fluid is causing metal on metal grinding and untimely wear you might experience the following symptoms: But for standard driving, you can change the differential fluid every 24,000 miles for the front and rear differentials. I am changing my personal change interval to 180,000 km (112,000 miles) for the front diff oil change. There are a few more choices in this grade, with the following being suitable: Penrite Pro Gear 75W90:  Progear 75W90 is a fully synthetic gearbox and differential oil from Australian company Penrite. I also have D44 LSD, with a slight knock, not like what people are saying in the above thread. If your front differential has a transaxle built into it, then you may even need to change the fluid every 20,000 miles. They produce a suitable fully-synthetic GL-5 oil which comes in US sizes of 1 quart (946ml)  and 1 gallon (3.8L). In order to avoid this, the manufacturers recommend changing the differential fluid every 50 000-60 000 miles, and in case of intensive “acceleration-braking” driving, the differential fluid change is required every 30 000-40 000 miles. Like any other automotive fluid, differential oil should not just be drained onto the ground or the grass because that would be toxic to the environment. Some car manufacturers place the differentials in the front and others place them in the back. Fluid Levels: Having the proper fluid levels are important to keeping your differential alive. Fit new crush washers to the fill and drain plugs. There are many additional checks which take place during routine vehicle servicing. The GL-5 spec is quite high, and generally means you'll have to select a fully synthetic oil. Instead of formulating multiple gear oils of the same viscosity, but different frictional properties to address occasional chatter in limited-slip differentials, you can use a gear-lube additive that alters the fluid’s original frictional properties and eliminates chatter. All these total prices are subjected to additional taxes and fees. the axles are always in the locked position so If I did not add this additive the diff would chatter on turns . Read also: Pros and Cons of Limited Slip Differential. Redline full synthetic 75w90 GL5 gear oil for hypoid Limited Slip Differentials has plenty of friction modifier in it. It is approx 3.8 Oz - 114 ml. I did my first at 10 K, break in change. Hi, I want to change oil in my differentials. but I'm not sure about other models. The specified oil … There are very few oils available that meet the required specifications. The LandCruiser 200 in Australia runs 'open' differentials front and rear, so there's no requirement to use limited slip oil in the rear diff. Otherwise, the front differential and rear differential can use the same type of oil if there is no transaxle. It's available in 1, 2.5, 4 and 20 litre containers: Redline gear oil 75W85:  Redline is a specialised US oil manufacturer. Refill the differential with 75W85 GL5-spec oil, until the oil flows from the fill hole. Can I use 75w-140 oil in Dana 30 and 35 without vari-lok? It depends on the type of Limited Slip Differential (LSD). The local dealer will charge you a whopping $400 to change these oils, but it's one of the simplest service procedures you'll ever find, and you can do it yourself in under an hour with basic tools and less than $200 worth of premium quality oil. The differentials may even be built into the front and rear ends. I have 1979 Trans Am with a limited slip differential and I want to change the differential oil. Used to engage both sides of the axle in the event of needed traction, the limited slip differential causes both drive tires to receive power, resulting in added traction. Fit new aluminium washers to the drain and fill plugs; Refill the differential with 75W90 GL5-spec oil, until the oil flows from the fill hole. When changing the front differential fluid, it will cost you anywhere from $70 to $130. Changing fluid won’t help with the knock, but needs to be done. This must have been part of a larger effort to switch to full synthetic instead of mineral-based oils. Affiliate Disclosure:  We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites. The recommended oil for the transfer case in the 200 is slightly different to the differentials, being a 75W90 GL-5 gear oil. This can be done by taking your car for a quick 10-15 minute drive. The owner’s manual of your vehicle is the best place to learn the exact mileage that you need to travel before the front differential fluid should be changed. the GM limited slip diff have clutches which is why I have to add the additive so the clutches will cause the axles to slip. No warranty is provided as to the accuracy of the information, and/or whether it applies in your situation or to your vehicle. Most manufacturers will say to change the fluid at 25,000-mile intervals, while others may recommend 30,000-mile intervals. Place a drain pan (at least 5 litres capacity) under the differential. The following should not be taken as instructions. This will allow the rear differential fluid viscosity to get thinner and flow more easily from the rear differential when drained. Be sure to wear clothes that you won’t mind getting dirty either. Nulon Smooth Shift 75W90:  This is a fully-synthetic GL-5 gear oil from Australian company Nulon. Remove the fill plug and the drain plug, using a 24mm socket. This includes the labor costs between $50 and $70 and the parts costs of around $30 to $80. This includes the estimated labor costs of around $40 to $60 and the estimated parts costs which are from $30 to $70. Capacity is around 4.2 litres. A vehicle's rear differential sends power from the driveshaft to the axles. Just like an engine, the differentials need lubricating fluid (oil) to keep running smoothly. You may not be aware of these checks, which could lead to component failures. There is the potential for expensive vehicle damage from improper servicing procedures. This includes the estimated labor costs of around $40 to $60 and the estimated parts costs which are from $30 to $70. Using a 12mm spanner and socket, remove the 8 bolts holding the guard to the transfer case; Remove the fill and drain plugs, and allow all the oil to drain out. Replace the fill plug and tension to 49Nm. Castrol Syntrax Universal Plus 75W90:  Syntax Universal Plus is a fully synthetic, GL-5 gear oil. Note that Redline make GL-4 and GL-5 versions of 75W90 oil. The differential allows the tires to rotate at different speeds. I’ll probably do,again at 20k. It's not just a 'grease and oil change'. When cornering, the inside tire turns slower than the outside tire. This video shows you how to tell if your rear wheel drive car or truck has a limited slip differential, and also what gears it has. Most 75W85 gear oils are mineral or semi-synthetic, and only meet the GL-4 specification. Once the fluid is drained into the pan, you should place it into a secured container and bring it to a quick lube place, auto repair shop, or hazardous materials disposal site so it can be discarded properly. Refit the drain plug and tension to 49Nm. Once again, the owner’s manual of your vehicle is the best place to find the appropriate interval for changing your rear differential fluid. The “plate” or “Salisbury” type of LSD uses small clutch plates each side of the differential. Some limited slip fluid smells burnt when new and is dark ... (LSD Dana). With the limited slip, you will add 2 quarts and one bottle of modifier. The following are suitable: Penrite Pro Gear GL-5 75W85:  Progear GL5 is a fully synthetic gearbox and differential oil from Australian company Penrite. Gear Oil for Differentials These products contain the extreme pressure additives necessary for ultimate protection road cars and racing vehicles, as well as friction modifiers (except NS) for proper limited-slip … I used to change the diff oil in my Durango with a limited slip diff when it would start binding the rear diff and chirping tires on sharp slow turns. * - The SAF-XJ synthetic fluid replaces the previous factory recommendation of SAF-XLS mineral oil for clutch-type limited-slip differentials. Between the front and rear differentials, a total of approximately 6.3 litres of oil is required. Generally, most car manufacturers will recommend the fluid get changed after at least 30,000 miles, but some may allow you to go up to 50,000 miles. I have a 1996 GM sedan with limited slip diff.. the toyota does not require any limited slip additive it is a open diff with no clutches. Unless you get maintenance done at the dealership where you bought your car, the mechanics are probably not going to tell you when the fluid needs to be changed. There are differentials in every vehicle on the road. As for changing the rear differential fluid, the estimated overall cost is a little more at a range of $80 to $150. The Toyota LSD-TL gear oil provided by Dealer is only for 2008 and newer per service bulletin T-SB-0118-08 July 25 2008. Installed 'Castrol 80W-90 (GL-5)', works great now. Only around 1.5 litres of oil is required for a full change. Since this is a very technical process, it is best to have a trained auto technician do this job for you. The LandCruiser 200 in Australia runs 'open'  differentials front and rear, so there's no requirement to use limited slip oil in the rear diff. I changed it every 30k. Regular rear diff, not limited slip. Drained the 'Toyota Limited Slip Differential 75W-85 gear oil TL GL-5' recommended by Dealer because clutch plates were binding and shuddering when turning. It's available in 1, 2.5 and 4 litre containers: Redline 75W90 GL-5:  Redline produce a suitable fully-synthetic GL-5 oil which comes in US sizes of 1 quart (946ml)  and 1 gallon (3.79L). Castrol Syntrax Universal Plus is a transaxle built into the front and others place in! A 'grease and oil change ' gon na do my rear ends containers! Of 1 quart ( 946ml ) and 1 gallon ( 3.8L ) plug, using 24mm... Of modifier it depends on the plug also had a limited slip differential see it on the road in differentials... 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