Rear Axle
When to Check Lubricant
It is not necessary to regularly check rear axle fluid unless you suspect there is a leak or you hear an unusual noise. A fluid loss could indicate a problem. Have it inspected and repaired.
How to Check Lubricant

To get an accurate reading, the vehicle should be on a level surface.
The proper level is from 0 to 3/8 inch (0 to 10 mm) below the bottom of the filler plug hole, located on the rear axle.
What to Use
To determine what kind of lubricant to use.
See also:
Drunk Driving
WARNING:
Drinking and then driving is very dangerous. Your
reflexes, perceptions, attentiveness, and judgment
can be affected by even a small amount of alcohol.
You can have a serious—or even ...
Collision Damage Repair
If the vehicle is involved in a collision and it is damaged, have the damage
repaired by a qualified technician using the proper equipment and quality replacement
parts. Poorly performed collision ...
Weight of the Trailer
How heavy can a trailer safely be? It should never weigh more than 454 kg (1,000
lbs). But even that can be too heavy.
It depends on how the rig is used. For example, speed, altitude, road grades, ...
