It would be pretty beneficial if the car has never had an AIO or some sort of paint cleaner worked onto its surface. The paint will be nice and clean. Actually, it's beneficial for any type of LSP, sealant or carnauba. I have used WOlfgang Paintwork Enhancer with a white LC CCS pad with a UDM on speed 4 and there was quite a bit dirt on the pad, so I can say that it cleaned the paint pretty well. The vehicle is also 4 years old. I would even do the same on a brand new vehicle. You don't always need to use an AIO or paint cleaner. An IPA wipedown will do good until you feel like you have to clean the paint again, and also if you want to strip off old layers of sealant/wax.