1989 GMC R2500 2WD HD PICKUP Oil Capacity, Types, & Filters
Your essential guide to 1989 GMC R2500 2WD HD PICKUP oil change is here! No more searching – find all the critical oil specs for your 1989 GMC R2500 2WD HD 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 1989 GMC R2500 2WD HD PICKUP 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) 30 (Above 4°C) SAE 5W-30 (All TEMPS) | GM 12731179 GM 25010908 GM 19431429 |
| 7.4L 8-cylinder [N] N | 7 quarts (with filter) | SAE 10W-30 (Above -18°C) 30 (Above 4°C) SAE 5W-30 (Below 16°C) | GM 19431429 |
Select Your 1989 GMC R2500 2WD HD PICKUP Engine Option
5.7L 8-cylinder Engine Code [K] K
Engine:
5.7L 8-cylinder [K] K [aka 5.7L V8 (Gas)]
Body & Trims:
Base, High Sierra, Sierra Classic
Oil Capacity:
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:
Oil Filter Replaces:
12576499, 19210285, 19256044, 25010324, 25014377, 6437462, 89017342 and 25014831, 25160561, 6438384, 89060468
1989 GMC R2500 2WD HD PICKUP 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)
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.
Oil Drain Plug Torque:
20 ft/lbs (Oil Drain Plug)
Notes:
N/A
7.4L 8-cylinder Engine Code [N] N
Engine:
7.4L 8-cylinder [N] N [aka 7.4L V8 (Gas)]
Body & Trims:
Base, High Sierra, Sierra Classic
Oil Capacity:
7 quarts (with filter)
Oil Viscosity/Type:
SAE 10W-30 (Above -18°C)
30 (Above 4°C)
SAE 5W-30 (Below 16°C)
OEM Oil Filter:
Oil Filter Replaces:
25014831, 25160561, 6438384, 89060468
1989 GMC R2500 2WD HD PICKUP 7.4L 8-cylinder [N] N oil change details
Oil Grade:
API*
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 (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 (Below 16°C)
Oil Drain Plug Torque:
20 ft/lbs (Oil Drain Plug)
Notes:
N/A