The AL7 has an abundance of black plastic which I used to clean with Toyota trim polish which was an oil based spray, it worked well but they no longer sell it.
A lot of modern plastic trim polishes/cleaners are water based and I've been disappointed with the results.
This protectorant works well:
https://www.cleanyourcar.co.uk/303-aerospace-protectant
I've been using it for a year or so but, unlike the Toyota oil based spray, water doesn't bead and run off.
I recently received this:
https://tinyurl.com/y89osl33
This is oil based and dries leaving the textured plastic (like the pieces where your legs rub on the AL7) looking shiny and wet. I've no idea how durable it is as yet but on looks alone, I'm pleased with the results. It's best to use an old dish sponge as an applicator.