I’m a fan of Optimum products and have used their spray wax for many years (Optimum Car Wax or OCW)
I haven’t used this tyre gel before but given my experiences with OCW and the good reviews online I thought I’d give it a go.
3.8L is a lot to try but I can always share with friends and family. The cheapest I found this size was $100 locally or $40 for 950ml
you can use this like armorall on your interior plastics/trim etc,.