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1990 Buick LesabreOil Type & Capacity
OEM spec from the factory service manual for the Base, 440T4/ME9 variant.
Quick Answer
Oil Type
$API - SAE 5W-30 (Below -20Deg.F to 60Deg.F), 10W-30 (Preferred) (0Deg.F to Above 100Deg.F)
Capacity (w/ Filter)
4.50 QTS.
4.25 L
Variant
Base, 440T4/ME9
This vehicle's factory manual
1990 Buick Lesabre: confirm the engine, trim, or drivetrain to open the available repair and diagnosis sections.
Sister site: See this spec on WhatTypeOfOil.com — our quick oil type & capacity lookup for every vehicle.
Other specs:All specs
What You'll Need
Related for Your 1990 Buick Lesabre
Frequently Asked Questions
- What type of oil does a 1990 Buick Lesabre take?
- The 1990 Buick Lesabre requires API - SAE 5W-30 (Below -20Deg.F to 60Deg.F), 10W-30 (Preferred) (0Deg.F to Above 100Deg.F). The exact spec may vary slightly by engine variant — this page shows the OEM recommendation for the Base, 440T4/ME9 configuration.
- How much oil does a 1990 Buick Lesabre need?
- The 1990 Buick Lesabre takes 4.50 QTS. (4.25 L) of engine oil with the filter replaced.
- Can I use synthetic oil in my 1990 Buick Lesabre?
- Yes — synthetic oil that meets the API - SAE 5W-30 (Below -20Deg.F to 60Deg.F), 10W-30 (Preferred) (0Deg.F to Above 100Deg.F) specification is acceptable and often preferred for better protection and longer change intervals.
- What happens if I use the wrong oil in my 1990 Buick Lesabre?
- Using oil that does not meet the API - SAE 5W-30 (Below -20Deg.F to 60Deg.F), 10W-30 (Preferred) (0Deg.F to Above 100Deg.F) specification can reduce engine protection, increase wear, and potentially void warranty coverage. Always use oil that meets the OEM spec.