Although, the mobil 1 synthetic fluid can attack some of the sealers used on the differential housing causing severe leaks. Electronic limited slip differentials howstuffworks. Working of clutch pack based lsd is elaborated here. Eaton performance differentials are designed for very specific axle applications. Acdelco canada limited slip axle lubricant additive. The most common question we get asked is what oil and additive to run in my differential.
This is because the amount of friction modifier additive required can vary from one differential to another. G7103 gm posi differential fluid additive friction modifier original gm limited slip differential lubricant additive specially formulated for use with limited slip or positraction rear axles. I pump some gear oil into the diff from its 1litre container, then top up. Parts full parts list vehicle maintenance limited slip axle lubricant additive limited slip axle lubricant additive acdelco limited slip axle lubricant additive can help protect against improperly lubricated rear axles that can cause damaging friction and excessive noise. The reason gm says dont add ls additive on a g80 is because, most all gl5 gear lubes the g80 uses a gl5 syn gear lube contain some amount of lsfm additive, thats premixed in each bottle. Trucks and suvs have a locking rear differential and the use of any limited slip additives can delay the engagement of the locking mechanism and can damage the g80. This additive is a must to eliminate overheating and possible damage to the friction plates. No, trucks do not have posi, posi it an old chevy sales name for a limited slip differential which are normally installed in performance cars etc. I have used lucas 80w90 oils and about 5oz of an additive for limited slip differential. I was getting it at the dealer but one day they told me they did not sell it anymore. I thought, perhaps i should not use the additive with the lucas gear oils or perhaps. Specially formulated by gm to stop the chattering and clunking frequently encountered in positraction rear ends.
Place a suitable container under the differential to catch the fluid. Another gear oil question castrol and valvoline 75w90. Many people in our hobby refer to positraction differential additive as limited slip axle lubricant additive, posi fluid and posi lube. G80 rear differential recommended fluid chevy and gmc. And the additive in the modifiers are only their to quiet the action of the limited slip and prevent disc shutter. Acdelco limited slip differential additive helps to reduce. G7103 gm posi differential fluid additive friction. What you need for gm positrac differentials limited slip.
Of gear oil so stock and aftermarket seem to all be in close agreement here on the 4 to 5 % ratio of limited slip additive to gear. Lubegard limitedslip supplement will eliminate your differential chatter. The small amount i had left over was added to my power. Buy gear oil additive lubegard 4 oz bk 7652597 online from napa auto parts stores. Step 1 troubleshoot the limited slip rear axle when experiencing a shudder or bind from the automobiles rear axle during low speed turns. Lubegard multivehicle limited slip supplement can be used in place of oe friction modifiers for example ford, chrysler, gm, etc for limited slip differentials. If equipped with a limited slip differential, be sure to add 4 oz.
Gm limited slip additive is formulated for use in limited slip, positraction rear axles, limiting excessive clutch plate friction for reduced chatter and rear end noise. Im not sure i even got my head fully wrapped around the concept. Apr 30, 2014 this video is aimed at giving a clear explanation on working of lsd with help of animation. Imo that waiting to 150k miles is too long on any gear oil, dino or synthetic.
Red line 80301 limited slip friction modifier 4 oz. Gear oil additive lubegard 4 oz bk 7652597 buy online. Genuine gm fluid 88900330 limited slip axle lubricant. I also change rear gear fluid every 3040k miles or so and always add the 4oz additive. Uses this hypoid gear design where the diff make fluid pressure to drive the side gears to make a limited slip. Genuine mopar fluid 4318060ac limited slip additive 4 oz. A vehicles rear differential sends power from the driveshaft to the axles. The auburn gear limited slip differential design has been extensively tested with high quality nonsynthetic 80w90 hypoid oils treated with gm or ford friction additives 3 oz. Gm original equipment limited slip differential fluid additive, 4 oz by acdelco. When cornering, the inside tire turns slower than the outside tire. A limitedslip differential lsd is a type of differential that allows its two output shafts to rotate at. This may be more than you want to know but the reason the additive was called for was to help disengage unlock the clutch.
This is a must have for all 19972004 corvette, per gm requirements. They said i had to bring my truck in for them to change it. Fullsynthetic formulas created from polyol ester base stocks, offer excellent lubrication under extreme conditions. I was told by a former dana drivetrain engineer that too much lsd additive effects the viscosity and decreases oxidative resistance of the oil, that is resistance to oxidation from heat. Getting ready to drain front and rear differentials and replace with mobil 1 75w90 synthetic will be my first go at differential fluid swap, but looks easy. Differential assembly kits free delivery possible on eligible purchases. Well after i was through i got to looking at the book and it called for. Instantly quieted the limited slip differential in my 97 firebird formula.
Thats why the limited slip additive is needed so that happens smoothly and it wont chatter or make noise turning corners. Corvette differential limited slip axle lubricant additive. This chevrolet performance limited slip lubricant additive not only quiets your rearend, but it can also aid in your. I was looking at the castrol 75w90 at the store the other day and there was no mention anywhere on the bottle that it actually contained a limited slip additive. I know mobil1 has the limited slip additive already mixed in since it has a big ls on the front. Maintenancefree, it features smooth, automatic operation in forward and reverse. The differential allows the tires to rotate at different speeds. Limitedslip friction modifier marketing file red line synthetic oil. Limited slip differential noise maintenancerepairs. Specially formulated to reduce differential temperature, prevent rust, and extend the life of clutches and gears. Auburn gears high performance and proseries limited slip differentials are the staple of the performance industry dating back to the mid 1950s.
This video is aimed at giving a clear explanation on working of lsd with help of animation. It helps to eliminate chatter in limitedslip differentials when added to nonlimitedslip api gl5 gear lubricants. Gm limitedslip posi additive is formulated for use in limited slip, positraction rear axles, limiting excessive clutch plate friction for reduced chatter and rear end noise. The detroit truetrac is a helicalgear style, limited slip differential that maximizes wheel traction and enhances driving characteristics. Bottle of friction modifier additive for limited slip differentials is a direct fit for the following fits any vehicle with rear slip differentials. All viscosity grades of max gear are formulated with limited slip friction modifier necessary for some limited slip differentials. The new gm fluid part number 88862624 already contains some friction modifier and has formulated to last longer, which reduces the likelihood that the additive will be required, but if unit develops chatter in slow corners you can some. Someone suggested adding gm limited slip additive to the transmission fluid. Ford motorcraft oem xl3 friction modifier additive limited. Do not put limited slip additive in your g80 youtube.
People without limited slip differentials and powerful engines may be known as the one wheel wonder. In an automobile, such limited slip differentials are sometimes used in place of a standard differential, where they convey certain dynamic advantages, at the. 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. Get deals on automotive parts, truck parts and more. Traction differentials that do not use friction clutch packs and do not need the modifier lube are the detroit locker and soft locker, powertrax lock right and no slip and gm eaton g80 and gov lock auto lockers, the detroit true track limited slip and the eaton elocker, detroit electrac, arb air locker, ox locker and a few other selectable. There are three basic types of differentials open, limitedslip and locking.
It is a gm rpo regular production option code and the gm parts catalogs describe it as axle,rear,positraction, limited slip. Limited slip or positraction units will often chatter without use of this. Acdelco 104003 limited slip axle lubricant additive. Required when doing any rear differential service to vehicles equipped with a limited slip. Adding friction modifier additive can cause a loss of locking differential functionality. Genuine mopar fluid 4318060ab limited slip additive 4 oz. Brakes drivetrain call 18003454545 open 24x7 same day shipping. Kendall limitedslip axle additive concentrate is a special additive used to modify the frictional characteristics of axle lubricants for use in limitedslip differentials. Ive noticed discussion on a few forums about ls additives and also a version of the m1 gear oil that has ls additive in it already. Look on the label if it does not say limited slip on the front and in the fine print it is not limited slip dont use it. All light duty trucks equipped with rpo g80 make use of a locking differential and the use of additives will delay the engagement of the locking mechanism and may decrease axle life. The noise started after i changed the oil in the rear end.
Acdelco limited slip differential lubricant additive helps to reduce friction and noise in the rear axle. Genuine gm fluid 88900330 limited slip axle lubricant additive 4 oz. Gm general motors 88900330 limited slip positraction. Red line limited slip friction modifier will significantly reduce the friction breakin of differentials, reducing breakin temps to as much as 50 degrees f. Acdelco limited slip differential additive helps to reduce differential temperature, prevent rust, and extend the life of clutches and gears. I did read some info on some aftermarket limited slip additives and most said the same a minimum 1.
Gm general motors 88900330 limited slip positraction axle. Genuine gm acdelco limited slip axle lubricant additive. I had already replaced the lube in the differential with synthetic gear oil but had some noise on sharp turns such as into my driveway. Rpo code for my truck 2004 chevy silverado 2500hd says the rear differential is a g80 limited slip positraction. Im having issues on slow turns where it seems to get stuck running both sides at same speed, so the wheels skip and theres loud clunking noises. Limited slip differential noise maintenancerepairs car. Free, expert advice about red line limited slip differential friction modifier breakin additive available. Ive always used regular 8090w gear oil with two bottles of gm modifier in my 8.
Will it hurt if you use a friction modifier in a non limited. Only needed in vehicles with friction clutch type posi units. Search results for limited slip differential free shipping. The same haldex system is used on several other gm epsilon based.
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 in an automobile, such limited slip differentials are sometimes used in place of a standard differential, where they convey certain dynamic advantages, at the expense of greater complexity. Too little, of course, causes chattering which in turn wears the unit out prematurely or breaks it outright. The additive reduces friction between your limited slip or positraction differential friction plates to eliminate the annoying chatter that is common with these types of units. Ford motorcraft oem xl3 friction modifier additive limited slip differentials. Any differential that is running a positrac limited slip with steel clutches we would highly recommend using gm ac delco axle lube part number 89021672 and gm limited slip additive part number 992694. My chevy 96 impala ss makes a loud noise that comes from the limited slip differential. A limited slip rear axle is such an axle device that reduces slippage between each tire, transmitting power by friction between the side gears, differential case and clutch plates. To avoid differential clutch chatter noise and for optimum performance, use the oil and additive described above. For perfect traction, use red line 75w90ns and add the red line limited slip differential frictionmodifier breakin additive until the chatter disappears. Gm limited slip differential additive bob is the oil guy.
How to troubleshoot a limited slip positraction diagnostic. Rear axle additives are designed for use in limited slip differentials which are normally installed in cars. Limitedslip axle additive concentrate kendall motor oil. I build rear differentials and i always use conventional petroleum based 80w90 gear oil with one bottle of the gm limited slip additive. Corvette garage corvette differential limited slip axle lubricant additive gm. Amsoil slip lock differential additive is formulated for use with both synthetic and petroleum gear lubricants and safely. Feb 02, 2012 the good gear lube companies all add limited slip additive now because this product works in either type of rear end. Auburn gearyour source for engineered drive solutions. Differential motion forces the interleaved discs to move through the fluid. Limited slip additive ford truck enthusiasts forums. Currently, elsd systems are available in saab cross wheel drive vehicles, as well as assorted vehicle models from mitsubishi, general motors and jeep.
Its versatility makes detroit truetrac the ideal traction solution for. Chevrolet performance has formulated this limited slip lubricant to reduce unwanted noise and wear. Our rich heritage and legacy provides our customers with the confidence that our products have been proven over the test of time. Order gear oil additives for your vehicle and pick it up in storemake your purchase, find a store near you, and get directions. Satisfies performance requirements of gm 1052358, ford m2c118a, 19b546ma, chrysler 4318060 and most imports. Lock type truck posi units that use metal friction plates. This product is inserted into limited slip differentials along with gear oil for added lubrication. All trademarks are property of their respective owners.
Acdelco 104003 limited slip axle lubricant additive 4 oz. I have cars with both gm and ford lsds and use the mfg recommended additive for them both. After driving the car for 10 miles the differential started to make noise. I experienced a whining from my vehicle for a few days, and it has now turned into a shuddering on acceleration above 30mph. I pump some gear oil into the diff from its 1litre container, then top up the gear oil container with this additive and pump the remainder into the diff. This type of rear end is greatly appreciated on the steep boat ramp in our development. Gm differential axle limited slip additivegm rear differential limited slip additive.
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