Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2004 Buick LeSabreOil Type & Capacity
OEM spec from the factory service manual for the Custom, 4T65E/M15 variant.
Quick Answer
Oil Type
API - SAE 5W-30
Capacity (w/ Filter)
4.50 QTS.
4.25 L
Variant
Custom, 4T65E/M15
Note: Use oil that meets GM Standard GM6094M.
For areas of extreme cold, where temperatures fall below -20Deg.F (-29Deg.C), it is recommended a SAE 5W-30 synthetic oil or a SAE 10W-30 oil. Both will provide easier cold starting and better protection for your engine at extremely low temperatures.
Source: Factory service manual — 2004 Buick LeSabre Custom, 4T65E/M15. View full manual section →
What You'll Need
Frequently Asked Questions
- What type of oil does a 2004 Buick LeSabre take?
- The 2004 Buick LeSabre requires API - SAE 5W-30. The exact spec may vary slightly by engine variant — this page shows the OEM recommendation for the Custom, 4T65E/M15 configuration.
- How much oil does a 2004 Buick LeSabre need?
- The 2004 Buick LeSabre takes 4.50 QTS. (4.25 L) of engine oil with the filter replaced.
- Can I use synthetic oil in my 2004 Buick LeSabre?
- Yes — synthetic oil that meets the API - SAE 5W-30 specification is acceptable and often preferred for better protection and longer change intervals.
- What happens if I use the wrong oil in my 2004 Buick LeSabre?
- Using oil that does not meet the API - SAE 5W-30 specification can reduce engine protection, increase wear, and potentially void warranty coverage. Always use oil that meets the OEM spec.