Moisture worked it's way in. Clean it up good and replace the gasket when you put the cover back on.
You are most likely running a petroleum based Gear Lube & the lighter chemicals are evaporating due to high temperature operation. After you completely clean everything, replace it with the correct viscosity of AMSOIL Severe Gear 100% Synthetic Gear Lube.
All Ford Rangers have a rear differential , and if they are 4X4 equipped , a front differential also
The rear differential pertains to a motor vehicle and means the differential that is situated in the final drive of the transmission assembly, found in rear-wheel drive vehicles.
The rear differential plug is located on the inside top part of the differential. Where the drive shaft connects.
Differential, with 10.25 ring gear Rear..........7.4 pints Differential, with 8.8 or 9 ring gear Rear..........5.5 pints Differential, Dana 70 HD Rear..........7.4 pints Differential, Dana 60, 61 Rear..........5.9 pints Differential, Dana 70 EX HD Rear..........6.5 pints Differential, Dana 80 Rear..........8.4 pints This link should help if you Identify which you have if you don't already know. http://www.drivetrain.com/rearend.html Hope This Helps.
rear, most have rear differential
How do you change the differential (rear) in 2005 Honda CRV
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The rear differential is a part of the power train, not a part of the suspension on a vehicle. It is the suspension system you need to be investigating on your vehicle. You more than likely have a broken spring.
The left rear wheel !
You can use any SAE certified rear differential fluid in your 1970 Chevrolet. The 1970 Chevrolet differential fluid can be checked from the differential fluid check port.
The rear differential is where the driveshaft meets the axle. Its right in the middle of the axle and is about the size of a basketball.
Just fill the the rear differential will fuild comes out and your done.