1991 Pontiac Sunbird Oil Capacity, Types, & Filters

Your essential guide to 1991 Pontiac Sunbird oil change is here! No more searching – find all the critical oil specs for your 1991 Pontiac Sunbird, including oil capacity, recommended oil viscosity (type), and the correct oil filter.

We cover all engine options, categorized by their specific engine codes, ensuring you get the right information for your specific configuration. Keep reading to discover everything you need for your next 1991 Pontiac Sunbird oil change!

Scroll Table ➜

Engine & Code	Oil Capacity	Oil Viscosity/Type	Oil Filter
2.0L 4-cylinder [K] K	4.5 quarts (with filter)	SAE 10W-30 (Above -18°C) 30 (Above 4°C) SAE 5W-30 (All TEMPS)	GM 12737092 GM 25325404 GM 25322835 GM 6439929
3.1L 6-cylinder [T] T	4.5 quarts (with filter)	SAE 10W-30 (Above -18°C) 30 (Above 4°C) SAE 5W-30 (All TEMPS)	GM 25010908

Select Your 1991 Pontiac Sunbird Engine Option

2.0L 4-cylinder Engine Code [K] K

Engine:

2.0L 4-cylinder [K] K [aka 2.0L L4 (Gas)]

Body & Trims:

LE, SE, Value Leader

Oil Capacity:

4.5 quarts (with filter)

Oil Viscosity/Type:

SAE 10W-30 (Above -18°C)
30 (Above 4°C)
SAE 5W-30 (All TEMPS)

OEM Oil Filter:

GM 12737092, GM 25325404, GM 25322835 and GM 6439929

Oil Filter Replaces:

12731175, 19210284, 25010792, 94632619, 94797406, 96352845, 96395221, 96458873, 96879797

1991 Pontiac Sunbird 2.0L 4-cylinder [K] K oil change details

Oil Grade:

API*

Oil Capacity:

4.5 quarts. (with filter). This is the capacity with the oil filter installed. Always check the oil level after refilling.

Oil Viscosity/Type:

SAE 10W-30 (Above -18°C)
30 (Above 4°C) - Use this viscosity only if the other recommended options are unavailable.
SAE 5W-30 (All TEMPS) - SAE 5W-30 is the preferred oil.

Name of Oil Filter:

N/A

Wix Oil Filter:

51040-EA

Wix Air Filter:

N/A

Coolant Capacity:

11.6 quarts

Oil Drain Plug Torque:

34 ft/lbs (Oil Drain Plug)

Notes:

N/A

3.1L 6-cylinder Engine Code [T] T

Engine:

3.1L 6-cylinder [T] T [aka 3.1L V6 (Gas)]

Body & Trims:

GT, LE, SE

Oil Capacity:

4.5 quarts (with filter)

Oil Viscosity/Type:

SAE 10W-30 (Above -18°C)
30 (Above 4°C)
SAE 5W-30 (All TEMPS)

OEM Oil Filter:

GM 25010908

Oil Filter Replaces:

N/A

1991 Pontiac Sunbird 3.1L 6-cylinder [T] T oil change details

Oil Grade:

API*

Oil Capacity:

4.5 quarts. (with filter). This is the capacity with the oil filter installed. Always check the oil level after refilling.

Oil Viscosity/Type:

SAE 10W-30 (Above -18°C) - SAE 10W-30 is preferred.
30 (Above 4°C) - Use this viscosity only if the other recommended options are unavailable.
SAE 5W-30 (All TEMPS)