1991 Chevrolet Blazer Oil Capacity, Types, & Filters

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

Scroll Table ➜

Engine & Code	Oil Capacity	Oil Viscosity/Type	Oil Filter
5.7L 8-cylinder [K] K	5 quarts (with filter)	SAE 10W-30 (Above -18°C) SAE 5W-30 (All TEMPS)	GM 25010908 GM 19431429
6.2L 8-cylinder [C] C Diesel	7 quarts (with filter)	SAE 10W-30 (Below 16°C) SAE 15W-40 (Above -18°C) 30 (Above 0°C)	GM 19431429

Select Your 1991 Chevrolet Blazer Engine Option

5.7L 8-cylinder Engine Code [K] K

Engine:

5.7L 8-cylinder [K] K [aka 5.7L V8 (Gas)]

Body & Trims:

Scottsdale, Silverado

Oil Capacity:

5 quarts (with filter)

Oil Viscosity/Type:

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

OEM Oil Filter:

GM 25010908 and GM 19431429

Oil Filter Replaces:

25014831, 25160561, 6438384, 89060468

1991 Chevrolet Blazer 5.7L 8-cylinder [K] K oil change details

Oil Grade:

API*

Oil Capacity:

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 5W-30 (All TEMPS) - SAE 5W-30 is the preferred oil.

Name of Oil Filter:

N/A

Wix Oil Filter:

Wix Air Filter:

Coolant Capacity:

17.4 quarts - For models WithOut Air Conditioning (AC).
18.5 quarts - For models with Air Conditioning (AC).

Oil Drain Plug Torque:

20 ft/lbs (Oil Drain Plug)

Notes:

N/A

6.2L 8-cylinder Engine Code [C] C Diesel

Engine:

6.2L 8-cylinder [C] C Diesel [aka 6.2L V8 (Diesel)]

Body & Trims:

Scottsdale, Silverado

Oil Capacity:

7 quarts (with filter)

Oil Viscosity/Type:

SAE 10W-30 (Below 16°C)
SAE 15W-40 (Above -18°C)
30 (Above 0°C)

OEM Oil Filter:

GM 19431429

Oil Filter Replaces:

25014831, 25160561, 6438384, 89060468

1991 Chevrolet Blazer 6.2L 8-cylinder [C] C Diesel oil change details

Oil Grade:

CF-4

Oil Capacity:

7 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 (Below 16°C)
SAE 15W-40 (Above -18°C) - SAE 15W-40 is the preferred oil.
30 (Above 0°C)

Name of Oil Filter:

N/A

Wix Oil Filter:

Wix Air Filter:

N/A

Coolant Capacity:

24 quarts

Oil Drain Plug Torque:

17 ft/lbs (Oil Drain Plug)

Notes:

N/A

Chevrolet Blazer – Engine Oil details by Year