Modern gasoline direct injection (GDI) engines have achieved levels of power and fuel economy never before possible in passenger car engines. As a result, smaller engines operate at much higher loads across all engine speeds. This has caused increased wear in critical areas of the engine, and created a destructive phenomenon called low-speed pre-ignition (LSPI). The unique, state-of-the-art additive technology in Royal Purple High Performance engine oils is designed specifically to address these issues, and help engines maintain performance and reliability.
This Part Fits:
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1986-1987 | Isuzu | Trooper | DLX |
| 1986-1989 | Isuzu | Trooper | LS |
| 1986 | Isuzu | Trooper | LX |
| 1989-1990 | Isuzu | Trooper | RS |
| 1988-1991 | Isuzu | Trooper | S |
| 1988-1989 | Isuzu | Trooper | XS |
