Honda RDX Owner's Manual page 402

Specifications
Dimensions
Length
Width
Height
Wheelbase
Track Front
Rear
Weights
Gross vehicle weight rating See the certification label attached
to the driver's doorjamb.
Engine
Type
i-VTEC 4-cylinder gasoline engine
Bore x Stroke
Displacement
Compression ratio
Spark plugs
Seating Capacities
Total
Front
Rear
396
180.7 in (4,590 mm)
73.6 in (1,870 mm)
65.2 in (1,655 mm)
104.3 in (2,650 mm)
61.9 in (1,572 mm)
62.6 in (1,590 mm)
Water cooled 4-stroke DOHC
with turbo charger, intercooler
3.39 x 3.90 in (86.0 x 99.0 mm)
140.4 cu-in (2,300 cm )
8.8 : 1
SILKR8A-S (NGK)
5
2
3
Capacities
Fuel tank Approx.
18.0 US gal (68 )
Engine oil Change 1
Including filter 5.0 US qt (4.7 )
Without filter 4.8 US qt (4.5 )
Total 6.1 US qt (5.8 )
2
Engine Change 1.85 US gal (7.0 )
coolant Total 2.22 US gal (8.4 )
Automatic Change 3.5 US qt (3.3 )
transmission Total 8.2 US qt (7.8 )
fluid
Rear Change 2.6 US qt (2.5 )
differential Total 2.9 US qt (2.7 )
fluid
Transfer Change 0.45 US qt (0.43 )
assembly Total 0.48 US qt (0.45 )
fluid
Windshield U.S. Vehicles 2.6 US qt (2.5 )
washer Canada 4.8 US qt (4.5 )
reservoir Vehicles
1 : Excluding the oil remaining in the engine
2 : Including the coolant in the reserve tank and that remaining in the
engine
Reserve tank capacity:
0.18 US gal (0.7 )