The VX had the old 3.8-litre V6; the VZ had the later Alloytec engine. I expect it would physically fit, but I would also expect the radiator and thermostat to be different. I wouldn’t recommend it.

For the past six months I have had a problem with oil in the radiator of my VX Commodore. I thought it might be the radiator, so I had the mechanic replace it, but that hasn't solved the problem. The ...