1990 Buick CENTURY Oil Capacity, Types, & Filters

Your essential guide to 1990 Buick CENTURY oil change is here! No more searching – find all the critical oil specs for your 1990 Buick CENTURY, 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 1990 Buick CENTURY oil change!

Scroll Table ➜

Engine & Code	Oil Capacity	Oil Viscosity/Type	Oil Filter
2.5L 4-cylinder [R] R	4.5 quarts (with filter)	SAE 10W-30 (Above -18°C) 30 (Above 4°C) SAE 5W-30 (All TEMPS)	GM 25012305
3.3L 6-cylinder [N] N	4.5 quarts (with filter)	SAE 10W-30 (Above -18°C) 30 (Above 4°C) SAE 5W-30 (All TEMPS)	GM 6439929

Select Your 1990 Buick CENTURY Engine Option

2.5L 4-cylinder Engine Code [R] R

Engine:

2.5L 4-cylinder [R] R [aka 2.5L L4 (Gas)]

Body & Trims:

Custom, Limited

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 25012305

Oil Filter Replaces:

N/A

1990 Buick CENTURY 2.5L 4-cylinder [R] R 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)

Name of Oil Filter:

N/A

Wix Oil Filter:

N/A

Wix Air Filter:

N/A

Coolant Capacity:

10 quarts

Oil Drain Plug Torque:

25 ft/lbs (Oil Drain Plug). For the large plug that holds the filter, first tighten it finger-tight, and then give it an additional quarter (1/4)-turn.