# 2. 04-01-2010, 11:44 PM. Randy777. Tuned. Join Date: Jun 2006. Location: Boulder City, Nevada. Posts: 338. Likes: 0. Received 0 Likes on 0 Posts. Many of the Pros on this site use Mobil 1 Synthetic (75-140). So I did too. From what I read you don't need a friction modifier as its already has some in it. MoyockPowerstroke.So here we go, a couple of back yard mechanics, with a cooler full, will be starting the work this coming Sat. First a couple of questions. Any recommendations to rear diff. fluids and grade (my F250 takes 75w-140, royal purple). Front axle fluids (my F250 takes 75w-90, royal purple). Transfer case fluids (my f25 takes Synchromax, royal purple).Jul 12, 2013 · Mobil, Amsoil, Redline etc all offer gear oils with the modifier already in it. I am running Redline 75w140 in mine. If you do decide to get an 08 diff cover it is a little thicker than the stamped metal cover. You will need 12 5/16-18 x 1.25 bolts... I believe the stamped metal ones are 1 or 1 1/8. change, d80, differential, dually, f350, fluid, ford. 1999 to 2016 Super Duty - Rear Differential fluid change - On a 2000 F350 super duty dually, doesn't changing fuid consist of removing the pumpkin cover on the differential housing and reinstalling with new gasket and filling fuid to bottom of filler hole. My ford dealer wants $200.00.The shop ate another oil change to get it right. So let's review those two numbers and what they mean. The first characterizes how thick the oil is at low temperatures and the second is at high temperatures. Therefore, 75W-140 is going to be thinner at low temperatures and thicker at high temperatures than 80W-90.Nov 22, 2006 · change, d80, differential, dually, f350, fluid, ford. 1999 to 2016 Super Duty - Rear Differential fluid change - On a 2000 F350 super duty dually, doesn't changing fuid consist of removing the pumpkin cover on the differential housing and reinstalling with new gasket and filling fuid to bottom of filler hole. My ford dealer wants $200.00. 1999 to 2016 Super Duty - Front Differential oil? - I recently added a mag hytec cover to the sterling 10.5 rear. I used the recommended royal purple 75w-140. I am now replacing the front differential cover and I am not quite sure if using the same grade of gear oil is correct or 75w-90?Proper maintenance interval for the Ford F-350 Super Duty Dana 80 rear differential. Oil should be changed every 15K to 20K Miles if hauling or towing regul...01-31-2005 09:50 PM. 1999 to 2016 Super Duty - Rear diff fluid type - Hey guys, gals. Been awhile since I could visit here. Just picked up a 2001 F350 7.3 6 speed dually 4x4. Hoping it's going to reliable enough to be the new tow rig around the farm. Have a few issues to work out first.The 2006 Ford F-150 rear differential fluid capacity iS6.9 quarts. The transmission fluid needs to be replaced every 30,000 to 60,000 miles. Along with fluid changes, terrible sounds will come from the transmission. Old transmission fluid will be awful to the ear. A worn out torque converter will cause a headache. The transmission is one of the most critical parts of the vehicle. You will face ...Ford Truck Enthusiasts Forums. Super Duty/Heavy Duty. 1999 to 2016 Super Duty. torque spec for rear diff cover. 1999 to 2016 Super Duty 1999 to 2016 Ford F250, F350, F450 and F550 Super Duty with diesel V8 and gas V8 and V10 engines. Sponsored by:This is a quick maintenance guide for the 1988-1996 Ford F-150, and 1988-98 F-250, and F-350 (not including new style 1997-98 F-250) pickup trucks, which is taken directly from Haynes manual 36058.. Most of these recommended routine maintenance tasks you can do yourself at home for practically no money, as long as you have a few simple tools and …ive owned a couple dozen FF axle equipped trucks over the years now and id say instances of rear seal leaks are just as common as blown wheel cylinders on them, the 85 F250 i have now blew the right rear wheel cylinder, i removed the shoes and have the line pinched off for now until i put new shoes and a new cylinder on it, this is the first FF ...Ford Truck Enthusiasts Forums. Small Chassis Trucks. Explorer, Sport Trac, Mountaineer & Aviator. Clarification on differential fluid for 2006 Mountaineer please. Explorer, Sport Trac, Mountaineer & Aviator 1991-1994, 1995-2001, 2002-2005, 2006-2010 Ford Explorer.Thinking about changing out that nasty rear end fluid???? Tonight we show you how to do that and we go over the axle packages that you would have on your tru...Yukon Gear & Axle Differential Rebuild Kit 14041. Part # 14041. SKU # 462573. Year Warranty. Check if this fits your Ford F350. Select store. for pickup availability. Standard Delivery by Apr. 27. Rear axle fluid (10.50 inch axle) with/without Electronic Locking Differential: Motorcraft® SAE 75W-85 Premium Synthetic Hypoid Gear Lubricant XY-75W85-QL WSS-M2C942-A Rear axle fluid (Dana M300 except 3.73 ratio Chassis Cab) (U.S.): Motorcraft® SAE 80W-90 Premium Rear Axle Lubricant XY-80W90-QL Step 1 - Remove the rear wheels. This is probably the easiest step in those whole process, so there is no need to go into too much detail on it. Park on flat, level ground. Set the emergency brake and put the truck in neutral. Chock front wheels on both sides of the wheel. Using tire iron, loosen rear lug nuts.Feb 9, 2008 · But if your F-350 has dual rear wheels, it has a Dana 80 rear axle that requires SAE 75W-90 Synthetic Gear Lubricant XY-75W90-GLS . Ford told their techs to use 75w140 synthetic for duallys that work hard. Front axle requires SAE 90 Premium Rear Axle Lubricant C2AZ-19580-F per the workshop manual, but your Owner's Guide probably says 75w90. Definitely NOT a 10.5L Sterling, which makes the literature wrong. Looks like you need 4.0L of 75w-90 synthetic oil. Depending on brand you may need to add ~8 oz of friction modifier, Ford calls theirs XL-3. Some synthetic oils come with friction modifier, so you may not need it.Only company that actually has any test results. Also Banks rear end differential cover. They have the only patent! Lifetime warranty if ever breaks. Only company that actually tasted their covers. 362% cooler than stock covers. ( Flat backs) and over a 100 some percent cooler than any after market untested cover!What type of gear oil for the 2006 f250 rear differential: If you are lazy like I am, you can drain the differential fluid and replace it with a 50/50 mix of gear oil and Lucas engine oil additives. That may stop the leak and get you a few more miles. Your gear oil is (ford 75W-140) (Dana 80W-90)and the capacity is 2.6 liters and 3.5 liters if you …Check/Add Rear Differential Oil - 1999 Ford F350Since discovering a leaking hub seal on my rear left hub, I decided I better check my differential fluid leve...Dec 1, 2006 · If so, the correct fluid is the 75w90 unless Ford just changed their mind again. The following is out of the August 2006 version of the Ford workshop manual. Code: The footnote says "Add EST-M2C118-A (friction modifier Part No. C8AZ-19B546-A) for complete refill of Dana limited-slip axles. Add 4 ounces for F-250-350 rear. For F-150 and F-250 4x4 add 2 ounces to front axle." If you go to a parts store to get the oil, just ask for hypoid gear oil with friction modifier. That should get you what you want.Nitro Ring and Pinion Gear Kit Ford 10.5 Rear Axle 11-22 Ford F-250 / F-350 SuperDuty SRW $ 475 2050-01-01. Match up your tire size to speed to RPM for optimum performance in your 6.7 Powerstroke. ARB E-Z Deflator Kit ARB505 2.00 ARB ARB505. ARB E-Z Deflator Kit $ 54 2050-01-01.So here we go, a couple of back yard mechanics, with a cooler full, will be starting the work this coming Sat. First a couple of questions. Any recommendations to rear diff. fluids and grade (my F250 takes 75w-140, royal purple). Front axle fluids (my F250 takes 75w-90, royal purple). Transfer case fluids (my f25 takes Synchromax, royal purple).Do you have a pesky rear axle pinion seal leak??? Check this video out and figure out what you need to do to fix this problem. A leaking rear end is a potent...Diff. oil for '06 f-350 dually - Ford Truck Enthusiasts Forums. Ford Truck Enthusiasts Forums. Super Duty/Heavy Duty. 1999 to 2016 Super Duty. Diff. oil for '06 f-350 dually. 1999 to 2016 Super Duty 1999 to 2016 Ford F250, F350, F450 and F550 Super Duty with diesel V8 and gas V8 and V10 engines. Sponsored by: Diff. oil for '06 f-350 dually.Most four-wheel drive vehicles have both front and rear differentials. Lubricating fluid inside the differential transfers heat away from the gears, helping to preserve the life and performance of your differential. Over time, though, operating temperatures and wear can cause the fluid to break down. When the fluid breaks down or becomes ...Run your vin number to find out the rear gear size. It might have a 2.73 gear. If you rebuild the diff (or someone else does) replace the clutches of course. Labor might be cheaper if you replace the diff though. I went from 2.73 stock gears (95 gt) to 3.73's then to 3.31's.Received 23 Likes on 21 Posts. Yes, 75w-140 synthetic is the TSB updated rear diff fluid required. Capicity is a little over 2 quarts ( 4.5 pts ) . If you have a ( axle code H6 ) limited slip differential use a gear lube like Mobil One 75w-140 that already has the friction modifier in it.Join Date: May 2006. Location: Central Florida. Posts: 10,007. Likes: 0. Received 0 Likes on 0 Posts. The service manual recommends different fluids for front and rear. 75w140 sounds right for the rear, I think the front was 75w110. If you notice a chattering noise after the change, pick up some friction modifier.Sep 13, 2023 · Our Blauparts step-by-step video shows how to change your Ford F-350 rear differential fluid on 1999 - 2016 Dana 80 Dual Rear Wheel (Dually) axle models. The... The front differential fluid is usually replaced every 25,000 to 30,000 miles. With the rear differential fluid, you might only need to change it every 30,000 to 60,000 miles. The appropriate schedule for your vehicle can be found in the owner’s manual. The front differential usually shares a housing with the transaxle on a front- or all ...Jun 22, 2019 · If using sealant, apply a continuous 1/8” bead to the cover making a circle around each bolt hole. Then set the cover aside and let it sit for 15-20 mins allowing the sealant to start to firm up. 7) install cover and bolts. Tighten bolts until the sealant applied to the cover just makes contact with the housing. 24 posts · Joined 2014. #1 · May 31, 2014. I am coming up on 100K and I was looking for input on changing the diff gear oil front and rear. The manual states it is a lifetime gear oil and only change if it has been submerged. I am the second owner and I have no idea if it has been serviced. The front fluid looks and smells good the rear is ...Feb 9, 2008 · But if your F-350 has dual rear wheels, it has a Dana 80 rear axle that requires SAE 75W-90 Synthetic Gear Lubricant XY-75W90-GLS . Ford told their techs to use 75w140 synthetic for duallys that work hard. Front axle requires SAE 90 Premium Rear Axle Lubricant C2AZ-19580-F per the workshop manual, but your Owner's Guide probably says 75w90. Proper maintenance interval for the Ford F-350 Super Duty Dana 80 rear differential. Oil should be changed every 15K to 20K Miles if hauling or towing regul...Rear Differential fluid change. Since I did the tuner stuff I figured I would do a little more. I tow an 11k lbs boat and about the same travel trailer. Not often enough but at 46k miles I thought it was time to take care of rear differential., First the manual says not to change it unless it is submerged in water and water intrusion.Depending on configuration, the 2005 Ford F-250 may have either a limited slip rear differential or a standard rear differential. In either case, You'll be using 7.0 pints of 75W-140. However, if You're equipped with a limited slip differential, it's also wise to use LSD additive, which primes and conditions the differential for optimal usage. The front …Rear Differential F-250/350 (10.50 inch axle) Type: Motorcraft SAE 75W-140 Synthetic Rear Axle Lubricant. Quantity: 3.3L (6.9 pints) Note: If you have a limited slip rear differential you also need 8 ounces of "Additive Friction Modifier C8AZ-19B546-A". If you use Royal Purple 75W-140 axle lube, the modifier is not needed.1994.5-2003 Ford Superduty 7.3L Diesel Maintenance Guide. ... Replace Rear Differential Fluid: 30,000 miles or immediately if submerged in water: 50,000 km: Replace Front Differential Fluid: ... Part Type: Part # or Year: Amazon Link: Engine Oil: XO-15W40-QSD 15W40: Motorcraft 15W40 (Recommended)I'm almost due for my next diff fluid change and going to put synthetic in it. Rear diff holds 5.5pts of gear oil which is about fill plug level. Last edited by sylver91; 06-29-2012 at 12:32 PM. Thanks for the help guys, I think I am going to go ahead and put the synthetic in and change the fluid when I have some time.Most four-wheel drive vehicles have both front and rear differentials. Lubricating fluid inside the differential transfers heat away from the gears, helping to preserve the life and performance of your differential. Over time, though, operating temperatures and wear can cause the fluid to break down. When the fluid breaks down or becomes ...1 / 1. 2004 - 2008 F150 - rear differential oil question - Hello Everyone. I have a 2007 ford f150 FX2 5.4 with 3.55 limited slip rear end. It has 68,000 miles and would like to change the rear differential oil. I have read and I know the oil it requires is 75w-140 plus the friction modifier.Originally Posted by carguy3j. The Sterling 10.25/10.5 rear diff takes just under 4 quarts. The commonly published spec for the Dana 50 front is = to just under 2 quarts. However, that does not get it filled anywhere near the fill plug. Many people believe it to be an error/misprint.2006 Ford F-350 Differential Lubricants. 2006 Ford F-350. Differential Lubricants. Sort by. 1 - 21 of 21 results. ACDelco® GM Original Equipment™ SAE 75W-90 Synthetic API GL-5/Dexron LS Gear Oil, 32 oz. 0. $19.98. Motorcraft® SAE 75W-140 Synthetic API GL-5 Differential Fluid, 1 Quart.Originally Posted by LxMan1. The 75w140 is recommended because it is thicker and will hold up to the heat better. Use synthetic and if you have a limited slip, make sure to get the posi additive too. Also, the thicker fluid is less likely to leak. Jimmy. 75w140 is just as likely to leak as 75w90 or water.Comprehensive 2003-2007 Ford 6.0L Powerstroke Maintenance Guide And Service Schedule. 6.0L Fluid/Oil Capacity chart and OEM Ford and Motorcraft Parts List. Help Us Get to 1,000! 3. 2. 8. ... Replace Rear Differential Fluid: 100,000 miles: 160,000 km: Replace Front Differential Fluid: ... Part Type: Part # Engine Oil: For temperatures above 10 ...Clutch, Transmission, Differential, Axle & Transfer Case. 2. 01-25-2005 01:47 PM. 1987 - 1996 F150 & Larger F-Series Trucks - 8.8 Differential Fluid Type 94 F150 4.9l - Once again, I'm getting mixed messages across the internet on what to do here. So here it goes. All stock/oem 1994 F-150 4.9L E40D 4X4 standard cab short bed with 8.8 rear ...