purple
90w gear lub
Vehicles with front wheel drive have a straight rear axle meaning there is no gear housing in the rear axle. Vehicles that are rear wheel drive have a gear box in the middle of the rear axle to change the rotation of a drive shaft to turn the rear axle. If you look under a full size pick up truck rear axle you will see a large gear box (typically referred to as a pumpkin) in the middle area of the axle. That is the gear box differential.
Depends on each individual truck. Look in your glovebox....there is a label from the factory with parts codes on it. The one with G refers to your gear ratio/ ring & pinion. GQ1 -- AXLE REAR, STD RATIO GT4 -- AXLE REAR, 3.73 RATIO GT5 -- AXLE REAR, 4.10 RATIO GU4 -- AXLE REAR, 3.08 RATIO GU5 -- AXLE REAR, 3.23 RATIO GU6 -- AXLE REAR, 3.42 RATIO G80 -- AXLE REAR, LIMITED SLIP (POSITRACTION)
The rear axle.
From the center of steer axle to center of rear axle on trailer. If you want just the truck it's the center of steer axle to center of rear drive axle.
Reduction in gear ratio form one gear to another such as a rear axle ring & pinion gear allows each component to complete revolutions per minute at different speeds in relation to one another. this can allow more power from an engine to be transmitted for example to the drive shaft as the drive shaft turns faster - thus turning the pinion gear faster than the ring gear that it meshes to in the rear axle assembly so the engine speed then turns the ring gear at at different rate - inturn the wheels of a truck turn at a slower rate then the drive shaft that is attached to the pinion gear - so the truck can rev the engine and the gear ratio allows the gears turning engine in relation to truck axle at different speeds to use more power to be sent to the axle & truck wheels.
That is done through the dealers computer system. There isn't one specific digit in the vin for the axle ratio.
synthetic gear oil
most definitely
Axle seals
The number of times the driveshaft turns for each turn of the rear end gear. For example, a 3.55 rear end gear would turn once for every 3.55 rotations of the driveshaft.
A pickup truck with four rear wheels on one rear axle would be considered a "dually".