Rear differential temp light is on - 2007 Subaru B9 Tribeca

low on rear differential lubricant. it's getting hot.

Standard Differential, Rear 8.8 and 9.75 RG......GL-5
All TEMPS......75W-140 [3]
SEVERE GEAR 75W-140 Synthetic EP Lubricant (SVOQT)
80W-140 Synthetic Long Life Gear Lube (FGO05)
Limited Slip Differential, Rear 8.8 and 9.75 RG......GL-5*
All TEMPS......75W-140 [4] [3]
SEVERE GEAR 75W-140 Synthetic EP Lubricant (SVOQT)
80W-140 Synthetic Long Life Gear Lube (FGO05)
Differential, Front 8.8 RG......GL-5
All TEMPS......80W-90
SAE 80W-90 Synthetic Gear Lube (AGLQT)
SEVERE GEAR 75W-90 Synthetic EP Lubricant (SVGQT)
75W-90 Synthetic Long Life Gear Lube (FGRQT)
SEVERE GEAR 75W-110 Synthetic EP Lubricant (SVTQT)
Transfer Case,......MA
Synthetic Multi-Vehicle Automatic Transmission Fluid (ATFQT)
Torque-Drive Synthetic Transmission Fluid (ATD1G)
Fluids
Power Steering Fluid......MA
Synthetic Multi-Vehicle Automatic Transmission Fluid (ATFQT)
Power Steering Fluid......MA
Torque-Drive Synthetic Transmission Fluid (ATD1G)
Brake Fluid......HB
AMSOIL Brake Fluid DOT-3 (BF3SN)
Clutch Fluid......HB
AMSOIL Brake Fluid DOT-3 (BF3SN)

000 DODGE TRUCKS DURANGO 5.9L 8-cyl Engine Code [Z]
Limited Slip Differential, Rear 8.25-9.25 W/ TT......GL-5* All TEMPS......75W-140
Standard Differential, Rear 8.25-9.25 W/ TT......GL-5 All TEMPS......75W-140
Limited Slip Differential, Rear 8.25-9.25 W/O TT......GL-5* All TEMPS......75W-90
Standard Differential, Rear 8.25-9.25 W/O TT......GL-5 All TEMPS......75W-90
Note:Trak-Lok axles require Mopar limited slip additive limited slip additive 04318060 or equivalent
Differential, With 7.25 RingGear Rear..........1.4 liters Fill no higher then 3/4 inch below plug hole.
Differential, With 8.25 RingGear Rear..........2.1 liters Fill no higher then 1/4 inch below plug hole.
Differential, With 9.25 RingGear Rear..........2.3 liters Fill no higher then 5/8 inch below plug hole.
Thank you for using fixya and good luck

no tune up needed until 100000 miles. run a couple of fillups of Shell or Chevron premium gas thru it to clean out fuel system and clean engine. Walmart fuel station also have gas additive you can buy with your gas.

2000 TOYOTA TACOMA 2.7L 4-cyl Engine Code 3RZ-FE

Engine Oil Grade 1......API* All TEMPS......5W-30 Optional ..10W-30
Engine, 2WD, with filter..........5.5 liters
Engine, 4WD, with filter..........5.4 liters

Manual Transmission,......GL-5/ GL-4 All TEMPS......75W-90
Automatic Transmission,A340E......AF3 / A43D......AF3

Differential, Front/ Rear W/ ADRD......GL-5 ALL TEMPS......75W-90
Differential, Front Less ADRD......GL-5 ALL TEMPS......80W-90

Transfer Case,......GL-4/GL-5 ALL TEMPS......75W-90 Gear oil.

Capacity:
Cooling System, Initial Fill..........8.5 liters
Automatic Transmission, A340E Initial Fill..........1.6 liters
Automatic Transmission, A340F Initial Fill..........2 liters
Automatic Transmission, A43D Initial Fill..........2.4 liters
Automatic Transmission, Total Fill
4 speed A340E..........7.2 liters
4 speed A340F..........10.1 liters
4 speed A43D..........6.5 liters
Manual Transmission, ..........2.5 liters
Differential, With ADRD Front..........1.2 liters
Differential, Without ADRD Front..........1.1 liters
Differential, 2WD V6 Rear..........2.6 liters
Differential, 4WD Extra Long Rear..........2.5 liters
Differential, Short WB With LSD Rear..........2.7 liters
Differential, Short WB Without LS Rear..........2.6 liters
Transfer Case, Electronic..........1.2 liters
Transfer Case, STD..........1 liters

There is a drain plug and a upper fill plug on the front differential, and believe it's in the passenger side. but i could be wrong on the side. The age thing but you can see both of the plug than you need to drain and re-fill.

2002 CHEVROLET TRUCKS SILVERADO 1500 PICKUP 5.3L 8-cyl Engine Code [T]

Differential, Front / Rear Full time 4WD......GLS ALL TEMPS....Synthetic Extreme Pressure (EP) Lubricant 75W-90 (SVG)

GM part no. 12378557 or equivalent Do not add friction modifier.

CAPACITIES:
Differential, Front..........1.7 liters
Rear differentials
Differential, With 10.5 RingGear Amer Rear..........2.6 liters
Differential, With 11 RingGear Dana Rear..........4 liters
Differential, With 11.5 RingGear Rear..........3.6 liters
Differential, With 8.6 RingGear Amer Rear..........2.3 liters
Differential, With 9.5 RingGear Amer Rear..........2.6 liters
Differential, With 9.75 RingGear Rear..........2.8 liters

Good luck and this should help.

There should be a filler plug on top of the diff housing, it will have a square recess that will accept a 3/8" drive extension for removal.

It should be listed in the owners manual, but because of different oil cooler setups you may have to do the change yourself and add oil until the correct level is established..... for the first oil change.
Most likely 7 liters,but start with 5,run the engine to fill the oil filter,let it sit for 5 mins and recheck and fill to full.
Note the amount needed for next time.

Standard Differential, Rear W/ SGRX......GL-5 ALL TEMPS......80W-90
Standard Differential, Front......GL-5 ALL TEMPS......80W-90
CAPACITIES: Differential, Front..........1.5 liters Differential, With SGRX Rear..........1.9 liters Saginaw rear axle has a removable rear cover without fillplug. Differential, Without SGRX Rear..........1.8 liters

AWD disabled from a sensor unit in rear differential that senses high temp. This thing is over $300. Whine is from fluid. Need to change fluid. This versatrack fluid is about $40 per bottle and you need 3 bottles. Thumping noise is from loose rear knuckle bushings. These are part of the entire rear knuckle assy. and you must replace complete knuckle.