2003 Lexus GS 300 Oil Type & Capacity
The 2003 Lexus GS 300 takes 5W-30 motor oil — 5.7 quarts with a filter change, per the factory service manual.
Factory-spec answer
5W-30 — 5.7 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| GS 300 | API - SAE 5W-30 | 5.70 QTS. | 5.40 QTS. | API - SL "Energy-Conserving" or ILSAC multigrade engine oil. |
Buy the right oil
Buy 5W-30 motor oil on Amazon2003 Lexus GS 300 oil filter on AmazonAs an Amazon Associate we earn from qualifying purchases made through these links.
More specs & repair guides for your GS 300
2003 Lexus GS 300 factory service manualAll fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner site AllOEMManuals.com.
Coolant capacity
8.1 quarts (7.66 L) — TOYOTA Long Life Coolant or equivalent. DO NOT use plain water alone.
Frequently asked questions
What type of oil does a 2003 Lexus GS 300 take?
The 2003 Lexus GS 300 takes 5W-30 motor oil (API - SAE 5W-30), per the factory service manual.
How much oil does a 2003 Lexus GS 300 take?
The 2003 Lexus GS 300 holds 5.7 quarts with a filter change, or 5.4 quarts without changing the filter.
Can I use synthetic oil in my 2003 Lexus GS 300?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 2003 Lexus GS 300. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.