Note that Redline make GL-4 and GL-5 versions of 75W90 oil. Fluid was black But no shavings on the plug. 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. The 75W140 weight is strange to us but it's the only gear oil listed in BMW's official fluid guide for these differentials. They produce a suitable fully-synthetic GL-5 oil which comes in US sizes of 1 quart (946ml)  and 1 gallon (3.8L). The differential allows the tires to rotate at different speeds. When cornering, the inside tire turns slower than the outside tire. 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. LandCruiser 200 Differential Oil. As for changing the rear differential fluid, the estimated overall cost is a little more at a range of $80 to $150. It's available in 1, 2.5 and 4 litre containers. Finally, be sure to clean the contaminants off the other housing components of the differentials. 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. This will allow the rear differential fluid viscosity to get thinner and flow more easily from the rear differential when drained. Place a drain pan (at least 5 litres capacity) under the differential. 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. Fit new crush washers to the fill and drain plugs. Redline full synthetic 75w90 GL5 gear oil for hypoid Limited Slip Differentials has plenty of friction modifier in it. How Long Does It Take To Charge a Car Battery? It would do so every 25k, but I towed a camper so YMMV. Installed 'Castrol 80W-90 (GL-5)', works great now. Capacity is around 4.2 litres. 6 Causes of Engine Ticking (When Accelerating or Idling), 4 Bent Engine Valve Symptoms (and How to Prevent Them), 25 Reasons a Car Jerks When Accelerating (and Under Other Conditions), What Does a Bad Starter Sound Like? 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. Some car manufacturers place the differentials in the front and others place them in the back. This includes the estimated labor costs of around $40 to $60 and the estimated parts costs which are from $30 to $70. It's available in 1, 2.5, 4 and 20 litre containers. 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. I did my first at 10 K, break in change. This can be done by taking your car for a quick 10-15 minute drive. There are differentials in every vehicle on the road. I am changing my personal change interval to 120,000 km (75,000 miles) for the rear diff oil change. … I also have D44 LSD, with a slight knock, not like what people are saying in the above thread. On the Jeep forum, it states that TJ front and rear differential fluid should be changed every 12,000 miles for heavy driving (off-road). I just got the basic 80-90W gear oil, about 5 quarts. Pros and Cons of Limited Slip Differential. Some limited slip fluid smells burnt when new and is dark ... (LSD Dana). Experienced home mechanics will find it boring/verbose, newbies like me may find it useful. 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: I’ll probably do,again at 20k. The following should not be taken as instructions. Hi, I want to change oil in my differentials. (just for rear to start with). No need to add more. Be sure to wear clothes that you won’t mind getting dirty either. the axles are always in the locked position so If I did not add this additive the diff would chatter on turns . Nulon Smooth Shift 75W90:  This is a fully-synthetic GL-5 gear oil from Australian company Nulon. This is the same concept as when you need to change your engine oil. There are very few oils available that meet the required specifications. The specified oil is a 75W85 viscosity, with a GL-5 specification. The GL-5 spec is quite high, and generally means you'll have to select a fully synthetic oil. Regular rear diff, not limited slip. If your front differential has a transaxle built into it, then you may even need to change the fluid every 20,000 miles. 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 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. share or like this page: There are potentially lethal dangers resulting from the vehicle during the procedure. 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. Most manufacturers will say to change the fluid at 25,000-mile intervals, while others may recommend 30,000-mile intervals. 75W90 GL-5 Gear Oil Remove the fill plug and the drain plug, using a 24mm socket. There are many additional checks which take place during routine vehicle servicing. If you undertake your own servicing, you do so entirely at your own risk. I called AMSOIL's technical team and they explained that our 75W-90 Severe Gear actually has limited slip friction modifiers already formulated in the gear oil, and that I don't need to add any extra. 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. No warranty is provided as to the accuracy of the information, and/or whether it applies in your situation or to your vehicle. Only around 1.5 litres of oil is required for a full change. It will be up to you to keep track of how many miles you’ve gone since the fluid was last changed. This will allow the rear diff fluid change schedule is every 20k miles, so you are way due. For expensive vehicle damage from improper servicing procedures it take to Charge a Battery! Be up to 3 quarts of gear oil clean the contaminants off other. 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