- Engine: Engine Code. A sequence of letters and numbers. This includes the engine block type and engine family, but may also include other information.
- Capacity: Capacity/Filter capacity in litres(liters). Engine oil fill quantity (Service fill).
- Intervals: Oil Change Intervals (use: normal). Engine oil should be changed at the latest after this time or after miles/km, whichever comes first.
The oil filter must be replaced every time the oil is changed, unless the car's owner's manual recommends otherwise.
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Model: Acura RDX, TB1/2 (2007 – 2012) (USA) | Engine | Capacity | Intervals |
|---|---|---|---|
| RDX 2.3 Turbo (2007 – 2010) | K23A1 | 4.7 L 4.97 US Quarts / Filter: n/a | 12 months |
| RDX 2.3 Turbo SH-AWD (2007 – 2010) | K23A1 | 4.7 L 4.97 US Quarts / Filter: n/a | 12 months |
| RDX 2.3 Turbo (2011 – 2012) | K23A1 | 4.7 L 4.97 US Quarts / Filter: n/a | 12 months |
| RDX 2.3 Turbo SH-AWD (2011 – 2012) | K23A1 | 4.7 L 4.97 US Quarts / Filter: n/a | 12 months |
Model: Acura RDX, TB3/4 (2012 – 2018) (USA)
 | Engine | Capacity | Intervals |
|---|---|---|---|
| RDX 3.5 i-VTEC V6 (2012 – 2015) | J35Z6 | 4.3 L 4.54 US Quarts / Filter: n/a | Flexible (max): Change 12 months |
| RDX 3.5 i-VTEC V6 (2015 – 2018) | J35Z6 | 4.3 L 4.54 US Quarts / Filter: n/a | Flexible (max): Change 12 months |
| RDX 3.5 i-VTEC V6 AWD (2012 – 2015) | J35Z6 | 4.3 L 4.54 US Quarts / Filter: n/a | Flexible (max): Change 12 months |
| RDX 3.5 i-VTEC V6 AWD (2015 – 2018) | J35Z6 | 4.3 L 4.54 US Quarts / Filter: n/a | Flexible (max): Change 12 months |
Model: Acura RDX, TC1/2 (2018-) (USA)
 | Engine | Capacity | Intervals |
|---|---|---|---|
| RDX 2.0 i-VTEC (USA) (2018 – ) | K20C4 | 4.8 L 5.07 US quarts | Flexible (max): Change 12 months |
| RDX 2.0 i-VTEC AWD (USA) (2018 – ) | K20C4 | 4.8 L 5.07 US quarts | Flexible (max): Change 12 months |
| RDX 2.0 i-VTEC AWD (CAN) (2018 – ) | K20C4 | 4.8 L 5.07 US quarts | Flexible (max): Change 12 months |