From Amsoil's site:
2004 CADILLAC CTS 3.6L 6-cyl Engine Code 7
FILTERS
Oil Filter......... 57090 WIX 57090 Oil Filter (S)
Air Filter......... 46653 WIX 46653 Air Filter (O)
Fuel Filter....... NA
Trans Filter..... NA
Cabin Filter..... 24869 WIX 24869 Cabin Air Filter (0)
NGK PLUGS & WIRE SETS
Wire Set.......... WIRESET N/R N/R [1]
1.No Wires Req'd
TRICO WIPER BLADES
Blade Class Driver Passenger Rear
NEOFORM T16220 T16210
EXACTFIT T221 T211
WINTER T37225 T37210
OKTANE 22 inch 20 inch
LUBRICANTS & FLUIDS
Engine Oil
Grade 1......API*[1]
Series 2000 Synthetic 0W-30 Motor Oil
SAE 5W-30 Synthetic Motor Oil
SAE 5W-30 XL Synthetic Motor Oil
Above 0°F......10W-30[2]
Below 61°F......5W-30[2]
Manual Transmission,M35.....AF3
Synthetic Automatic Transmission Fluid
Torque-Drive™ Synthetic Automatic Transmission Fluid (ATD)
Manual Transmission,Tremec 6-Speed.....AF3
Synthetic Automatic Transmission Fluid
Torque-Drive™ Synthetic Automatic Transmission Fluid (ATD)
Automatic Transmission.....AF6
Synthetic Automatic Transmission Fluid
Standard Differential, Rear .....GL-5[3]
All Temps......75W-90
Severe Gear 75W-90
Controlled Slip Differential, Rear .....GL-5*[3][4]
All Temps......75W-90
Severe Gear 75W-90
Fluids
Power Steering Fluid.....PS
Brake Fluid.....HB
Clutch Fluid.....HB
1. Must use synthetic engine oil.
2. 5W-30 is preferred.
3. Synthetic lubricant, GM part no. 12378261, specification
No. 9986115.
4. With complete drain/refill add 4 oz part no. 1052358
CHASSIS LUBRICATION
0 Fittings, 0 Plugs
CAPACITIES
Engine, with filter..........6.0 quarts
Cooling System, Initial Fill..........10.0 quarts
AMSOIL Antifreeze and Engine Coolant
Automatic Transmission, 5L40E Initial Fill..........6.4 quarts[1]
Automatic Transmission, Total Fill
5 speed 5L40E..........9.0 quarts
Manual Transmission, M35..........2.7 pints
Manual Transmission, Tremec 6-Speed..........7.4 pints
Differential, Rear..........2.7 pints
1. Replace drain plug W/ new drain plug after each removal.
TORQUES
Oil Drain Plug.....18 ft-lbs
Manual Transmission M35
Fill Plug.....26 ft-lbs
Drain Plug.....26 ft-lbs
Manual Transmission 6-Speed
Fill Plug.....20 ft-lbs
Drain Plug.....20 ft-lbs