| From | Message |
Sephiroth
Dodge Dakota
JOIN HERE
3/12/2004
18:32:04
|
 Subject: Differential additive required with AMS?
IP: Logged
Message:
Alright, I've seen some tests done with my own eyes here in Raleigh where AMS took on Mobil-1 differential-lube. In the end (after three tests) AMS added 3hp to the wheels according to the dyno.
Anyway, I was looking at ordering some AMS differential-fluid for my truck and switching it, but upon reading my owner's manual, I found this:
"Limited-slip differentials require the use of a friction-control additive. Mopar Hypoid Gear Oil Additive Friction Modifier is a material of this type and is recommended. This should be added to the gear lubricant whenever a fluid change is made."
Do I actually have to go out and buy this stuff also? I was just planning on draining the old into a container, using some engine-bright to get every last drop of the old fluid out, then refilling with AMS lube. I was also going to use 85W-140 since it tends to get hotter than 90deg here, but rarely below even freezing, so never below zero.
Oh, and how the heck do I drain my differential? I was thinking, buy a new gasket, remove the ten bolts, clean out the insides, replace with new gasket and then refill. I don't see any kind of drain-hole on the differentials which is why I ask.
Now, questions for the AMS rep! It seems as though I can buy 80W-90 from the AMS site in 1qt bottles just fine, but the cheapest 85W-140 I can find on the site is a fraggin' 5gal pail! No way in heck I could use all that. Why can't I get some 85W-140 in 1qt bottles?
|
Wadak
Dodge Dakota
JOIN HERE
3/13/2004
07:46:15
|  RE: Differential additive required with AMS?
IP: Logged
Message:
I use in my Dakota with LSD and it works fine without problems or noise. I have been running the 80-90w it works fine.
|
AmsoilSponsor
DakotaEnthusiast
3/13/2004
11:01:57
|  Differential additive required with AMSOIL?
IP: Logged
Message:
Sephiroth,
Good questions, but I am heading out to lunch with my wife.
I will get back with you this afternoon.
Steven Roark , Amsoil Dealer , Proud Sponsor of www.DodgeDakotas.com
AMSOIL Synthetic Motor Oils, Lubricants, Filtration, and Truck Care Products
|
Sephiroth
Dodge Dakota
JOIN HERE
3/13/2004
13:46:57
| RE: Differential additive required with AMS?
IP: Logged
Message:
Thanks Wadak. If you don't mind me asking, how long have you been running AMS in your differential(s) without that Mopar stuff? I'm fully planning on switching, it's just a matter of, "Do I need to pay God knows how much extra for some Mopar fluid?"
Steve, I emailed you, so don't worry about replying here. Thanks for the fast response though!
|
AmsoilSponsor
DakotaEnthusiast
3/13/2004
15:30:46
| Differential additive required with AMSOIL?
IP: Logged
Message:
Sephiroth, Yes I got your email, and have responded. I will still post here for everyone else's benefit.
Use what is recommended, and if you decided to use the heavier weight --- you would spend a lot more money at the gas pump! You don't need a heavier weight!
__________________________________________________
FYI - Gear Lube Information:
High quality gear oils must lubricate, cool and protect geared systems. They must also carry damaging wear debris away from contact zones and muffle the sound of gear operation. Commonly used in differential gears and standard transmission applications in commercial and passenger vehicles, as well as a variety of industrial machinery, gear oils must offer extreme temperature and pressure protection in order to prevent wear, pitting, spalling, scoring, scuffing and other types of damage that result in equipment failure and downtime. Protection against oxidation, thermal degradation, rust, copper corrosion and foaming is also important.
__  --  __
__________________________________________________
AMSOIL Series 2000 Synthetic 75W-90 Gear Lube delivers unbeatable protection and fuel economy (independent testing shows class 8 vehicles with AMSOIL Series 2000 Synthetic 75W-90 Gear Lube in the differentials obtained up to 4.83 percent more mpg than vehicles equipped with another popular gear lube). Amsoil Synthetic Gear Lube has the film strength required to deliver all the protection heavy-duty and high-stress applications need in a fuel-saving viscosity grade. AMSOIL Series 2000 Synthetic 75W-90 Gear Lube is recommended for use in all passenger vehicles, commercial trucks and race vehicles.
AMSOIL 75W-90, 80W-90 AND 85W-140 Gear Lubes exceed the lubrication and performance requirements for gear boxes where API MT-1, GL-4 or GL-5 lubricants are specified.
__________________________________________________
__________________________________________________
Amsoil's latest (and best) Gear Lube, Series 2000
__________  __________
AMSOIL Series 2000 Synthetic 75W-90 Gear Lube delivers unbeatable protection and fuel economy. It has the film strength required to deliver all the protection heavy-duty and high-stress applications need in a fuel-saving viscosity grade. Recommended for use in all passenger vehicles, commercial trucks and race vehicles. Product Code: TGR
APPLICATIONS
AMSOIL Series 2000 Synthetic Gear Lube is Recommended
for Applications Requiring the Following Specifications:
API MT-1, GL-2 THROUGH GL-5
MIL-PRF-2105E
MACK GO-J, GO-J PLUS
CHRYSLER MS-9070
GM 12346190
FORD M2C-201-A
ROCKWELL 0-76-E
EATON PS-037A, PS-109
AMSOIL Series 2000 Synthetic Gear Lube provides limited slip performance. Although generally not necessary, original equipment manufacturers' limited slip additives may be used in conjunction with AMSOIL Series 2000 Synthetic Gear Lube.
NOTE: Most vehicle manufacturers recommend driving a vehicle in tight figure "8" patterns eight to ten times after changing limited slip lubricants.
--------------------------------------------------
I am going to quote an old friend from this site ... Sandman.
... and I quote: "GM recomends 100,000 to 150,00 mile drain intervals. This is in the 8.625 rear end's equipted with synthetic gear lube from factory. This is under normal conditions. So I will apoligise for makeing fun of Amsoil's claim of "life of vechile" drain interval for their new 2000 series gear lube. I figure if that type of drain interval can be aproved by an OEM then that is good enough for me!
Sandman
--------------------------------------------------
Amsoil Series 2000 Gear Lube is latest introduction from Amsoil offering a higher level of performance vs. Amsoil's regular gear lube. They start with a different base stock with a special additives package. Amsoil could have discontinued the regular gear lube but contine to carry it due to its popularity.
I have Freightliner customers driving Class 8 Tractor Trailor Trucks using 75w-90 synthetic gear lube in their difs. Tuff enough for them ... Tuff enough for me.
--------------------------------------------------
Additives ???
AMSOIL Slip-Lock Differential Additive
Effectively Eliminates Gear Housing Chatter
When making a turn, the outer wheels of a vehicle must travel faster than the inner wheels. It is up to the differential to act as a balance arm, establishing constant equilibrium of torques and forces between the left-hand and right-hand driven wheels. In standard (or open) differentials, power is directed to the wheel offering the least resistance. This works well when making a turn, but in a situation where one wheel is lifted off the ground, it causes the suspended wheel to turn while the other remains motionless.
Limited-slip (or positraction) and locking differentials are traction-increasing devices. Locking differentials transfer all available torque to both wheels. The teeth of the spider assembly engage with those on the locker clutch, causing both axle shafts to operate as one. Locking differentials don't allow one drive wheel to spin while the other remains stationary. Instead, they keep both wheels in drive mode, but unlock to permit different wheel speeds when turning. The engaging and disengaging of the teeth on automatic locking differentials often causes a banging and clunking sound. Manual locking differentials usually use an electric motor or vacuum diaphragm to engage the locker, reducing this noise.
Limited-slip differentials allow different wheel speeds when turning, but when one wheel loses traction, greater torque is transferred to the wheel offering more resistance. Limited-slip differentials make use of friction between clutch plates, as opposed to the meshing teeth employed by locking differentials. Transferring less torque per side, limited-slip differentials are generally smoother and quieter than locking differentials, but still sometimes "chatter" when transferring torque to the wheel with traction.
In some differential applications, a friction modifier additive is necessary to reduce chatter. AMSOIL Slip-Lock Differential Additive is formulated with advanced friction modifiers and is designed to eliminate gear-housing chatter in cars, trucks and SUVs equipped with limited-slip, positraction and locking differentials. It also reduces the banging and clunking associated with automatic locking differentials.
AMSOIL Slip-Lock Differential Additive is formulated for use with both synthetic and petroleum gear lubricants and safely replaces manufacturer recommended friction modifiers. Its convenient flip-top dispenser provides quick and easy application to the gear housing. One four-ounce bottle of Slip-Lock treats differential capacities of two to four quarts. It is not for use in automatic transmissions or other applications requiring ATF.
NOTE: AMSOIL Synthetic Gear Lubes DO NOT require the use of this additive. However, not all differentials respond the same and if chatter is noticed, the addition of AMSOIL Slip-Lock will eliminate it. For chattering differentials not running AMSOIL Gear Lube, this product is an excellent solution to the problem.
--------------------------------------------------
DIY Helpful Information
For those of you thinking of changing your own fluids (DIY) ...
Helpful Differential Recommendations:
-Flush (drain) as much of the old fluid out.
-Differential fluid capacity depends on ring gear and axle housing size.
-Do not over/under fill differential. This could mean a capacity difference of a quart or more and may cause overheating problems. (See the owner’s manual for proper fill level)
AMSOIL gear oils are formulated with friction modifiers for limited slip differential applications. There is no need to add limited slip or additional additives.
-After changing the differential fluid, drive the vehicle in 7 or 8 figure eight turns, so the new lubricant can work its way into the axle assembly.
__________________________________________________
Synthetics provide the long-lasting protection, fuel efficiency and dependability needed for top performance, even extreme-pressure conditions. Synthetics stay fluid in cold temperatures for easy cold-weather shifting.
--------------------------------------------------
To request a FREE Amsoil Catalog, clink the link below.
Steven Roark , Amsoil Dealer , Proud Sponsor of www.DodgeDakotas.com
AMSOIL Synthetic Motor Oils, Lubricants, Filtration, and Truck Care Products
|
Wadak
Dodge Dakota
JOIN HERE
3/13/2004
22:29:33
| RE: Differential additive required with AMS?
IP: Logged
Message:
About 2 years now and again no problems.
|
Lurkin
Dodge Dakota
JOIN HERE
3/15/2004
10:22:36
| RE: Differential additive required with AMS?
IP: Logged
Message:
I changed the diff fluid in both my front and rear diffs (2002 QC AWD 4.7 auto) last fall to AmsOil Series 2000 gear lube. The rear is LSD. I did not need the LSD additive, and it still rolls :-)
If you have the 2WD, changing fluid is easy, just remove the bolts, carefully pry the cover off, clean the cover, Right-Stuff the cover and re-torque the bolts, fill it and you are rolling.
|
Buck Harley
Dakota Enthusiast
3/15/2004
15:42:56
| RE: Differential additive required with AMS?
IP: Logged
Message:
Dodge requires the anti friction add (5 Oz. ) in all limited slip
Buck
|
Lurkin
Dodge Dakota
JOIN HERE
3/16/2004
10:02:25
| RE: Differential additive required with AMS?
IP: Logged
Message:
It may be required for the normal gear lube, but it's not necessary with the AmsOil S2000 gear lube. The additive is nothing more then friction modifier, and if the AMSOil didn't work without the additive, then the LSD would be chattering and noisy as all hell. Mine is not. If it did start doing that, then I would add it.
|
AmsoilSponsor
DakotaEnthusiast
3/16/2004
10:35:51
| Differential additive required? AMSOIL Gear Lube
IP: Logged
Message:
Repeat (per my prior post): AMSOIL Synthetic Gear Lubes DO NOT require the use of this additive. However, not all differentials respond the same and if chatter is noticed, the addition of AMSOIL Slip-Lock will eliminate it. For chattering differentials not running AMSOIL Gear Lube, this product is an excellent solution to the problem.
Steven Roark , Amsoil Dealer , Proud Sponsor of www.DodgeDakotas.com
AMSOIL Synthetic Motor Oils, Lubricants, Filtration, and Truck Care Products
|
JES
Dodge Dakota
JOIN HERE
3/16/2004
13:09:33
| RE: Differential additive required with AMS?
IP: Logged
Message:
Redline doesn't need the additive either. I changed both my diffs to Redline 75W90 at 12k miles. I've got 31k miles on my truck now with no problems. What stinks is, no matter what diff fluid you use, Dodge requires that the diff fluid be changed every 12k miles in order for the warranty to remain intact.
Eric -- http://photos.yahoo.com/jes_96
|
poopoo
Dodge Dakota
JOIN HERE
3/16/2004
13:21:01
| RE: Differential additive required with AMS?
IP: Logged
Message:
Dodge sux. My fathers GM is "fill for life"
and never needs changing. They use synthetic.
|
NOT
Dodge Dakota
JOIN HERE
4/05/2004
23:57:25
| RE: Differential additive required with AMS?
IP: Logged
Message:
JES,
I have a 4wd and the dealer changes my gear lube every 24K. They only do that on 4WD's. The 2WD's have their differential services scheduled at something like 48 or 60K. They assume that the 4wd's will see occasional off road duty. If you submerge the rear axle in muck there is a chance of contaminating the rear end lube with water and crud. Therefore, they change ALL the fluids evry 24K. THATS'S ONLY ON 4WD's!!! Sounds like your dealer is milking you for some extra bucks.
|
Rob C
Dodge Dakota
JOIN HERE
4/06/2004
02:44:05
|  RE: Differential additive required with AMS?
IP: Logged
Message:
That new Amsoil 2000 differential fluid must be some really slick stuff? I used Amsoil 75W90 Synthetic fluid in a LSD differential without the friction modifier and several months later my differential started making noise while turning. I checked the fluid and it looked grey and sludge-like so I changed it out with more Amsoil synthetic. The rearend quieted down for a little while then started making noise again. Shortly afterward, I blew out a spider gear on a trip to Idaho on business. It cost me almost $700 to replace the spider gear! I could've bought a whole rear axle assembly for less than that but, when you're away from home and broken down, you're at the mercy of the repair shop. I don't blame Amsoil because they didn't advertise that you don't need friction modifier, I choose not to use the additive because a friend told me Amsoil was so superior to standard diff fluid that I wouldn't need the additive.
The moral to this story is friction modifier is very inexpensive and does work. It's not going to negate the benefits of the Amsoil fluid so, use it and avoid possible expensive repairs. It's very affordable insurance for your LSD.
|
RandyB
Dodge Dakota
JOIN HERE
4/06/2004
08:21:36
| RE: Differential additive required with AMS?
IP: Logged
Message:
I would not blame amsoil.
Here are some links. Bad dif's in our trucks.
http://www.dodgedakota.net/boards/dea/409.html
http://www.dodgedakota.net/boards/dea/255-2.html
|
JES
Dodge Dakota
JOIN HERE
4/06/2004
13:26:06
| RE: Differential additive required with AMS?
IP: Logged
Message:
NOT -- my dealer has nothing to do with it. I do ALL of the maintenance on my truck myself. My MANUAL clearly states that the differentials need to be serviced every 12k miles.
Eric -- http://photos.yahoo.com/jes_96
|
DUH
Dodge Dakota
JOIN HERE
4/06/2004
13:53:33
| RE: Differential additive required with AMS?
IP: Logged
Message:
The 2000 will work either with or without the additive.
|
kj
Dodge Dakota
JOIN HERE
4/06/2004
15:12:24
| RE: Differential additive required with AMS?
IP: Logged
Message:
Does your dad's GM have a limited-slip? My Dodge didn't require changing until I put an aftermarket unit in. Just about everything from the factory with an open rear can go for life without changing.
|
Friction
Dodge Dakota
JOIN HERE
4/06/2004
20:27:10
| RE: Differential additive required with AMS?
IP: Logged
Message:
the friction modifier is for the clutch disc. it has nothing to do with the gears. Gear failure would not have been the result of using or not using the friction modyfier.
|
DANIEL
Dodge Dakota
JOIN HERE
4/06/2004
21:09:53
| RE: Differential additive required with AMS?
IP: Logged
Message:
My 99 dakota 4x4 makes a grinding noise after the diff. oil heats up and your on a incline, making a turn. I recently changed fluid with amsoil 75-90 and also added the friction additive. I wonder if should have used a friction additive reccomended by chrysler or if it would have made any difference. This truck had 70k on it when I bought it and when I changed the diff. oil,there was very little debris in the pumpkin .If not in a bind it drives fine, no noises at all.Anyone else had a problem like this?
|
Rob C
Dodge Dakota
JOIN HERE
4/07/2004
03:55:54
| RE: Differential additive required with AMS?
IP: Logged
Message:
"Friction" since you're afraid to use your name or handle, first of all, I can't believe that I have to explain this to an "expert" like yourself but, any LSD using clutch packs without friction modifier will bind or even seize. This will cause a lot more stress on all the differential parts including side, pinion and ring gears because there isn't the normal slipping of clutches when turning.
My differential broke while turning with full throttle applied.
|
| | P 1 Next Page>> |
