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Dodge Dakota
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1/10/2004
13:00:28

Subject: synthetics
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I have a 01 Dak with a 4.7,reg cab shortbed, with a 5speed and 392 gears. Question, do any of you run synthetics in the gear box? Ive heard it would be gear clash city if this was done. True? Or not? Thanks in advance, Terry



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1/10/2004
13:52:39

Amsoil Synthetic Oils , Lubricants , Filters
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I should probably wait for others to post a reply first --- but I can't help myself :-)

Let me quote someone who used to visit this site a lot:

Quote from sandman:

"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 apologise for making fun of Amsoil's claim of "life of vechile" drain interval for their new Amsoil Series 2000 gear lube. I figure if that type of drain interval can be aproved by an OEM then that is good enough for me!
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That being said ...

I won't make the mistake and take that as an endorsement, just an acknowledgement that there is "sometimes" truth in advertising as long as proper outside and followup research is done by the individual, or that individual seeks out the advice of a trusted expert.
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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 Series 2000 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 would use the synthetic 75w-90 since synthetic 75w-90 will perform above and beyond the recommended petroleum 75w-90. 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.
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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.
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DIY

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. Stays fluid in cold temperatures for easy cold-weather shifting.
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To request a FREE Amsoil Catalog, click the link below.



Steven Roark , Amsoil Dealer , Proud Sponsor of www.DodgeDakotas.com

AMSOIL Synthetic Motor Oils, Lubricants, Filtration, and Truck Care Products



AmsoilSponsor
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1/10/2004
13:57:21

Amsoil = www.american-synthetic-oil.com
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.... and the Transmission ---

AMSOIL SYNTHETIC UNIVERSAL ATF & AMSOIL ATF+4

Amsoil offered a second synthetic ATF, specifically for the ATF+4 applications, about four years ago. However it was only on the market for about a year before they were able to incorporate the unique friction modifier chemistry into the universal ATF. At that time, they discontinued this second ATF product, and now offer AMSOIL SYNTHETIC UNIVERSAL ATF.

---------------------------------------------

AMSOIL Synthetic Universal ATF

Recommended for applications requiring the following specifications:

Chrysler ATF+, ATF+2, ATF+3, ATF+4

AMSOIL synthetic automatic transmission fluid is a universal ATF designed to exceed nearly all foreign and domestic performance requirements. It improves fuel efficiency, reduces transmission temperatures by 20 to 50 degrees F and increases transmission life. Provides unsurpassed thermal stability and at least 3 times the life of conventional ATFs. Delivers maximum protection for towing and other severe-duty applications. Formulated with synthetic basestocks and the top-of-the-line additive package, AMSOIL ATF provides top performance, durability & efficiency.

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Key Benefits to You:

Cleaner transmission components, More efficient power transfer, Lower Transmission temperatures, Dramatically less transmission wear, Smoother cold temperature operation, Long drain intervals, Compatible Applications: Nearly all passenger cars (foreign & domestic), Nearly all light duty trucks (including Dodge Dakotas).

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There a number of folks who run Amsoil Synthetic Universal ATF --- in Dakota's (Member - BigBlue QC for one), in Dodge diesel pickups, in "LH" sedans like the Concorde and Dodge minivans, etc. It works just fine.

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Amsoil is NOT the only company offering multi-vehicle ATF. I simply believe that ours is better.

Thank You,



Steven Roark , Amsoil Dealer , Proud Sponsor of www.DodgeDakotas.com

AMSOIL Synthetic Motor Oils, Lubricants, Filtration, and Truck Care Products



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