2005 Acura RL Oil Type & Capacity: 5W-20 (4.5 quarts)
The 2005 Acura RL takes 5W-20 motor oil — 4.5 quarts with a filter change, per the factory service manual.
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| RL | API - SAE 5W-20 | 4.50 QTS. | 4.20 QTS. | Excluding the oil remaining in the engine. |
More factory specs & repair guides for your RL
🛞 2005 Acura RL Tire Size & Pressure →🌧️ 2005 Acura RL Wiper Blade Sizes →💡 2005 Acura RL Light Bulb Sizes →📖 2005 Acura RL Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
6.36 quarts (6.01 L) — HONDA All Season Antifreeze/Coolant Type 2. Includes: the coolant in the reserve tank and that remaining in the engine.
Frequently asked questions
What type of oil does a 2005 Acura RL take?
The 2005 Acura RL takes 5W-20 motor oil (API - SAE 5W-20), per the factory service manual.
What is the oil capacity of a 2005 Acura RL?
The 2005 Acura RL oil capacity is 4.5 quarts with a filter change, or 4.2 quarts without changing the filter.
How often should I change the oil in my 2005 Acura RL?
Most 2005 Acura RL owners follow a 5,000–7,500 mile interval with conventional oil, or up to 10,000 miles with full synthetic. Always check the oil life monitor if equipped, and consult your owner's manual — Acura recommends intervals based on driving conditions, not just mileage.
Can I use synthetic oil in my 2005 Acura RL?
Yes. 5W-20 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 2005 Acura RL. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.