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1991 Isuzu PICKUP Oil Capacity, Types, & Filters

Your essential guide to 1991 Isuzu PICKUP oil change is here! No more searching – find all the critical oil specs for your 1991 Isuzu PICKUP, 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 Isuzu PICKUP oil change!

Scroll Table ➜

Engine & CodeOil CapacityOil Viscosity/TypeOil Filter
2.3L 4-cylinder [Z] Z3.7 quarts (with filter)10W (-18 To 15°C)
SAE 10W-30 (Above -18°C)
SAE 20W-20, SAE 20W-40 (Above -7°C)
30 (Above 5°C)
SAE 5W-20 (Below -7°C)
SAE 5W-30 (Below 15°C)
Isuzu 8192102840
2.6L 4-cylinder [L] L4.4 quarts (with filter)10W (-18 To 15°C)
SAE 10W-30 (Above -18°C)
SAE 20W-20, SAE 20W-40 (Above -7°C)
30 (Above 5°C)
SAE 5W-20 (Below -7°C)
SAE 5W-30 (Below 15°C)
Isuzu 8944567412
3.1L 6-cylinder [E] E4.5 quarts (with filter)10W (-18 To 15°C)
SAE 10W-30 (Above -18°C)
SAE 20W-20, SAE 20W-40 (Above -7°C)
30 (Above 5°C)
SAE 5W-20 (Below -7°C)
SAE 5W-30 (Below 15°C)
Isuzu 8944567412

Select Your 1991 Isuzu PICKUP Engine Option

2.3L 4-cylinder Engine Code [Z] Z

Engine:

2.3L 4-cylinder [Z] Z [aka 2.3L L4 (Gas)]

Body & Trims:

LS, S

Oil Capacity:

3.7 quarts (with filter)

Oil Viscosity/Type:

10W (-18 To 15°C)
SAE 10W-30 (Above -18°C)
SAE 20W-20, SAE 20W-40 (Above -7°C)
30 (Above 5°C)
SAE 5W-20 (Below -7°C)
SAE 5W-30 (Below 15°C)

OEM Oil Filter:

Isuzu 8192102840

Oil Filter Replaces:

8250107920, 8250146930, 8921420090, 8931562430, 8931562980, 8931563000, 8971870260

1991 Isuzu PICKUP 2.3L 4-cylinder [Z] Z oil change details

Oil Grade:

SJ

Oil Capacity:

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

Oil Viscosity/Type:

10W (-18 To 15°C)
SAE 10W-30 (Above -18°C) - SAE 10W-30 is preferred.
SAE 20W-20, SAE 20W-40 (Above -7°C)
30 (Above 5°C)
SAE 5W-20 (Below -7°C)
SAE 5W-30 (Below 15°C)

Name of Oil Filter:

N/A

Wix Oil Filter:

51334-EA

Wix Air Filter:

N/A

Coolant Capacity:

9.5 quarts

Oil Drain Plug Torque:

58 ft/lbs (Oil Drain Plug)

Notes:

N/A

2.6L 4-cylinder Engine Code [L] L

Engine:

2.6L 4-cylinder [L] L [aka 2.6L L4 (Gas)]

Body & Trims:

1 Ton, LS, S

Oil Capacity:

4.4 quarts (with filter)

Oil Viscosity/Type:

10W (-18 To 15°C)
SAE 10W-30 (Above -18°C)
SAE 20W-20, SAE 20W-40 (Above -7°C)
30 (Above 5°C)
SAE 5W-20 (Below -7°C)
SAE 5W-30 (Below 15°C)

OEM Oil Filter:

Isuzu 8944567412

Oil Filter Replaces:

8941357471, 8941494180, 8942019422, 8942019423, 8942435020, 8942435021, 8942511101, 8944110840, 8944304111, 8944304112, 8944567410, 8944567411

1991 Isuzu PICKUP 2.6L 4-cylinder [L] L oil change details

Oil Grade:

SJ

Oil Capacity:

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

Oil Viscosity/Type:

10W (-18 To 15°C)
SAE 10W-30 (Above -18°C) - SAE 10W-30 is preferred.
SAE 20W-20, SAE 20W-40 (Above -7°C)
30 (Above 5°C)
SAE 5W-20 (Below -7°C)
SAE 5W-30 (Below 15°C)

Name of Oil Filter:

N/A

Wix Oil Filter:

51334-EA

Wix Air Filter:

N/A

Coolant Capacity:

7 quarts

Oil Drain Plug Torque:

58 ft/lbs (Oil Drain Plug)

Notes:

N/A

3.1L 6-cylinder Engine Code [E] E

Engine:

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

Body & Trims:

1 Ton, LS, S

Oil Capacity:

4.5 quarts (with filter)

Oil Viscosity/Type:

10W (-18 To 15°C)
SAE 10W-30 (Above -18°C)
SAE 20W-20, SAE 20W-40 (Above -7°C)
30 (Above 5°C)
SAE 5W-20 (Below -7°C)
SAE 5W-30 (Below 15°C)

OEM Oil Filter:

Isuzu 8944567412

Oil Filter Replaces:

8941357471, 8941494180, 8942019422, 8942019423, 8942435020, 8942435021, 8942511101, 8944110840, 8944304111, 8944304112, 8944567410, 8944567411

1991 Isuzu PICKUP 3.1L 6-cylinder [E] E oil change details

Oil Grade:

SJ

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:

10W (-18 To 15°C)
SAE 10W-30 (Above -18°C) - SAE 10W-30 is preferred.
SAE 20W-20, SAE 20W-40 (Above -7°C)
30 (Above 5°C)
SAE 5W-20 (Below -7°C)
SAE 5W-30 (Below 15°C)

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:

18 ft/lbs (Oil Drain Plug)

Notes:

N/A

Isuzu PICKUP – Engine Oil details by Year