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.
2021 Acura RDX BaseFACTORY OEM SERVICE PROCEDURE
Quick Lookups: Fluids
| FLUID CAPACITIES | |||||||
|---|---|---|---|---|---|---|---|
| Fluid Type | Application | Standard | Metric | Fluid Spec | Note | S/H | |
| Air Cond Compressor Oil | N/A | N/A | ND-OIL14 (POE) | Capacity is between 2.37 - 2.87 ozs. | S | ||
| Air Cond Refrigerant | N/A | N/A | HFO-1234yf (R-1234yf) | Capacity is between 1.10 - 1.23 lbs. | S | ||
| Automatic Transmission Fluid | FWD | 4.50 QTS. | 4.25 L | ACURA Automatic Transmission Fluid ATF-TYPE 2.0 | S | ||
| Brake Fluid | N/A | N/A | ACURA Heavy Duty DOT 3 Brake Fluid | S | |||
| Differential Gear Oil | Rear | 1.76 QTS. | 1.66 L | ACURA All-Wheel Drive Fluid (DPSF-II) | S | ||
| Engine Coolant | 1.43 GALS. | 5.41 L | 50/50 mix of HONDA Long-Life Antifreeze/Coolant Type 2 and distilled water | Includes: the coolant in the reserve tank and that remaining in the engine. | S | ||
| Engine Oil | Drain and Refill,w/Filter | 5.00 QTS. | 4.73 L | Genuine ACURA Motor Oil API Premium-grade SAE 0W-20 Detergent Oil. | You may also use synthetic motor oil if it is labeled with the API Certification Seal and is the specified viscosity grade. | S | |
| Engine Oil | Drain and Refill,w/o Filter | 4.60 QTS. | 4.35 L | Genuine ACURA Motor Oil API Premium-grade SAE 0W-20 Detergent Oil. | You may also use synthetic motor oil if it is labeled with the API Certification Seal and is the specified viscosity grade. | S | |
| Fuel Tank | 17.10 GALS. | 64.73 L | S | ||||
| Transfer Case Fluid | 0.61 QTS. | 0.57 L | ACURA Hypoid Gear Oil HGO-1 | S | |||
| Windshield Washer Fluid | 2.60 QTS. | 2.46 L | Use commercially-available windshield washer fluid only. | S | |||
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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