FORD FALCON XH EFI V8 XR8 4.9L MNG,Z (MPFI) OHV 16v Petrol V8 185kW Utility RWD [10/97 - 05/99]. FORD FALCON XH EFI V8 XR8 4.9L Z (MPFI) OHV 16v Petrol V8 165kW Utility RWD [03/96 - 10/97]. XTRA COOL GOLD is suitable for use in all vehicles not requiring anti-freeze protection, both petrol and diesel.