I’ve been a long time fan of Meguiars products, personally finding them more effective than Autoglym. I keep my 4/4 clean(ish) but nowhere near to concours. It helps that my 4/4 also has painted wire wheels, so not so obvious if they are a bit grubby. Part of my routine is also to spend some time making sure the leather is clean and well treated, again mainly using Meguiars products.
