What can you use on your tarmac driveway to make it shiny and wet looking?

You should not use anything on your tarmac driveway to make it shiny and wet looking. Applying any kind of petroleum-based product, such as oil or grease, to the driveway will only damage it in the long run. Over time, the oil or grease will break down the asphalt and cause the driveway to deteriorate rapidly. Additionally, applying petroleum-based products can pose a hazard to the environment and can potentially contaminate groundwater.