Rear axle

[Ralph Edward]

Owners manual states Dana models 80 and 70 rear axles are delivered from factory with SAE 90. On next page it states multipurpose gear oils meeting specs API GL-5 are recommended for all axles. Does not specify what weight. Any suggestions on what to use? also what is the capacity of the NV-4500?

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1999 3500,5 spd,3:54,Red,Gear Venders ,Fiberglass Running boards, Bed Liner.

 

[Loren]

Ralph,

For normal driving, buy hypoid gear oil meeting API GL-5 or MIL- L-2105C specifications, SAE 80W-90 viscosity. The trailer towing section in my owner's manual states that you may also use SAE 75W-140 synthetic gear lubricant if you use your truck to pull a trailer for a significant number of miles. And, just to be sure you have a wide choice, we are informed that Dana 70 and Dana 80 axles come from the factory with SAE 90W oil. With this wide range to choose from, I am using Amsoil Series 2000, 100% synthetic, SAE 75W-90 gear lube, which meets GL-5 specifications.

You pay your money and you take your choice.

Loren

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2000 Quad Cab, 4x4, short bed, six-speed: U. S. Gear exhaust brake, MileMarker Select Drive viscous coupling, Velvet-Ride spring shackles, Painless Wiring circuit box, Optima yellow-top batteries, Super-Glide 5th wheel hitch, Reese folding ball gooseneck hitch, Drawtite front hitch receiver, Tekonsha Sentinel brake controller, Westin nerf bars, Clarion sound system
1995 Standard Cab, 4x4, long bed, automatic: Firestone Ride-Rite air springs, torque converter lock-up switch, 4" cat-back exhaust, Reese 20K 5th wheel hitch, Reese gooseneck hitch, Hayes Micro Control trailer brake controller, 100 gallon bed-mounted fuel tank with 12 volt electric pump & fill nozzle, Swiss Cap fiberglass cap