I want to change the differential fluid in my 2007 Acura TL

Most rear differentials, it's a drain and refill operation.

SOME differentials have a drain plug, but others have ONLY a fill plug.

If yours doesn't have a drain plug, then you need to suck the old fluid out, with suction/transfer pump:

http://www.harborfreight.com/gear-oil-and-fluid-pump-61746.html

You can also use this to refill with the new fluid.

Most rear ends are filled to the bottom of the fill plug hole.
If you overfill, just let it overflow/drain until it stops dripping.

Now, different differentials require different fluids, so check what you need.
It might be in the owner's manual.

Depends on your engine.

1980 JEEP CJ-7 2.5L 4-cyl Engine Code [B]
CAPACITIES
Engine, GM without filter..........2.4 quarts[1]
Wix Filter ........ 51040
Cooling System, Initial Fill..........8.0 quarts
Automatic Transmission, A904, 30RH Initial Fill..........4.0 quarts[2]
Automatic Transmission, A999, 32RH Initial Fill..........4.0 quarts[2]
Automatic Transmission, Total Fill
3 speed A999, 32RH..........8.4 quarts
3 speed A904, 30RH..........7.0 quarts
Manual Transmission, 4-SPD, SR-4..........3.0 pints
Manual Transmission, 4-SPD, T176..........3.6 pints
Differential, Front..........2.5 pints[3]
Differential, Rear..........4.9 pints
Transfer Case,..........4.0 pints

1. Add extra oil when replacing filter. After refill check oil level.
2. With engine automatic transmission operating temperature, shift through all gears.
Check fluid level in NEUTRAL and add fluid as needed.
3. 1984-1992 Models with command-Track, add 5 oz of 75W-90 GL-5 to shift motor housing opening.

TORQUES
Oil Drain Plug.....25 ft-lbs
Manual Transmission T176
Fill Plug.....15 ft-lbs
Drain Plug.....15 ft-lbs
Manual Transmission SR4
Fill Plug.....20 ft-lbs

1980 JEEP CJ-7 4.2L 6-cyl Engine Code [C]
CAPACITIES
Engine, without filter..........5.0 quarts[1]
Wix Filter..... 51522
Cooling System, Initial Fill..........11.0 quarts
Automatic Transmission, A904, 30RH Initial Fill..........4.0 quarts[2]
Automatic Transmission, A999, 32RH Initial Fill..........4.0 quarts[2]
Automatic Transmission, Total Fill
3 speed A999, 32RH..........8.4 quarts
3 speed A904, 30RH..........7.0 quarts
Manual Transmission, 4-SPD, SR-4..........3.0 pints
Manual Transmission, 4-SPD, T176..........3.6 pints
Differential, Front..........2.5 pints[3]
Differential, Rear..........4.9 pints
Transfer Case,..........4.0 pints

1. Add extra oil when replacing filter. After refill check oil level.
2. With engine automatic transmission operating temperature, shift through all gears.
Check fluid level in NEUTRAL and add fluid as needed.
3. 1984-1992 Models with command-Track, add 5 oz of 75W-90 GL-5 to shift motor housing opening.

TORQUES
Oil Drain Plug.....30 ft-lbs
Manual Transmission T176
Fill Plug.....15 ft-lbs
Drain Plug.....15 ft-lbs
Manual Transmission SR4
Fill Plug.....20 ft-lbs

1980 JEEP CJ-7 5.0L 8-cyl Engine Code [H]
CAPACITIES
Engine, without filter..........4.0 quarts[1]
Wix Filter..... 51258
Cooling System, Initial Fill..........13.0 quarts
Automatic Transmission, A999, 32RH Initial Fill..........4.0 quarts[2]
Automatic Transmission, A904, 30RH Initial Fill..........4.0 quarts[2]
Automatic Transmission, Total Fill
3 speed A904, 30RH..........7.0 quarts
3 speed A999, 32RH..........8.4 quarts
Manual Transmission, 4-SPD, SR-4..........3.0 pints
Manual Transmission, 4-SPD, T176..........3.6 pints
Differential, Front..........2.5 pints[3]
Differential, Rear..........4.9 pints
Transfer Case,..........4.0 pints

1. Add extra oil when replacing filter. After refill check oil level.
2. With engine automatic transmission operating temperature, shift through all gears.
Check fluid level in NEUTRAL and add fluid as needed.
3. 1984-1992 Models with command-Track, add 5 oz of 75W-90 GL-5 to shift motor housing opening.

TORQUES
Manual Transmission T176
Fill Plug.....15 ft-lbs
Drain Plug.....15 ft-lbs
Manual Transmission SR4
Fill Plug.....20 ft-lbs

Oilman

I assume you are talking about the rear differential. There is not a drain plug. Two ways you can change fluid - 1) Remove differential cover, let fluid drain, reseal with rtv, and tighten down. To refill there is a plug that you need to remove, fill until fluid comes out the hole. 2) Use a device to **** fluid from fill hole, then refill.

every 30k its just a drain and fill. just over 3 quarts

CAPACITIES
Engine, 2WDwithout filter..........3.5 quarts[1]
Engine, 4WDwithout filter..........4.0 quarts[1]
Cooling System, Initial Fill..........8.5 quarts
AMSOIL Antifreeze and Engine Coolant
Automatic Transmission, Total Fill..........7.4 quarts
Manual Transmission, 2WD..........4.2 pints
Manual Transmission, 4WD..........8.4 pints
Differential, 2WD Rear..........3.2 pints
Differential, 4WD Rear..........2.7 pints
Differential, Front..........2.7 pints
Transfer Case,..........4.6 pints

1. Add extra oil when replacing filter.
refill check oil level.

TORQUES
Oil Drain Plug.....22-29 ft-lbs
Transfer case
Fill Plug.....18-25 ft-lbs
Drain Plug.....18-25 ft-lbs
Manual Transmission
Fill Plug.....18-25 ft-lbs
Drain Plug.....18-25 ft-lbs

The tranny fluid is added through the tranny dipstick (make sure it's not the oil dipstick). Fluid color should be red and the dipstick should have instructions on how to check level (car in park, engine at idle). Funnels are your friend here.

Navigation has no relevence at all. but what does is the vent system in the dash.there is a flap inside the vents under the dash it sounds like it is not moving on the passengers side.

Front Differential Oil Change

1. Before changing or inspecting oil, be sure to stop engine and lift vehicle horizontally.
2. With vehicle lifted up, check leakage. If leakage exists, correct it. NOTE: Whenever vehicle is hoisted for any other service work than oil change, also be sure to check for oil leakage.
3. Remove oil filler plug (2).
4. Remove drain plug (1), and drain old oil.
5. Apply sealant to thread of drain plug (1), and tighten it to specified torque.Tightening torque Differential oil drain plug a: 23 Nm (2.3 kg-m, 17.0 ft. lbs.)
6. Pour new specified oil until oil level reaches bottom of oil filler plug hole (3) as shown in figure. NOTE:

• Hypoid gear oil must be used for differential.
• It is highly recommended to use API GL-5 80W-90 gear oil.

Differential oil specification: API GL-5 (For SAE classification, refer to viscosity chart [A] in figure.)

Differential oil capacity (Reference): 0.9 - 1.1 liters (1.9/1.6 - 2.3/1.9 US/Imp. pt.)

1. Apply sealant to thread of level / filler plug, and then tighten it to specified torque. A: Sealant 99000-31260SUZUKI Bond No.1217G Tightening torque Differential oil level / filler plug b: 23 Nm (2.3 kg-m, 17.0 ft. lbs.)

DONT DO IT! It has Toyota W/S fluid in it, its a lifetime fluid that doesnt have to be changed. If you can tfind a dipstick, dont touch your drainplug. It requires a complicated procedure that requires dealer only tools

Once you've drained the transaxle by removing drain plug, re-install drain plug and torque to mfg. specs. To fill transaxle, you need a 5/8" square drive attached to a 9" extension, breaker bar or ratchet. Raise vehicle on hoist, or jack up and secure with jackstands. The fill plug is located above and slightly to the right of the location where the passenger side c.v. halfshaft enters the transaxle. Remove fill plug. Using a fluid exchange tool available at your local parts store, fill with automatic transmission/transaxle fluid available only from a Suzuki dealership, (part# ESSO LT 71141) until fluid starts to run out of fill hole, then replace fill plug, and torque to manufacturer specifications. I'm a former Suzuki technician. I hope this was helpful.