LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Acura >> 2021 >> RDX Base >> Repair and Diagnosis >> Quick Lookups >> Fluids
April 5, 2026: LEMON Manuals is launched! Read the announcement.

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