What is the best car cleaning brand that i should use on my mustangs' (interior&exterior)?
i would go with armor-all on the interior. it provides UV protection and it gives a great shine to interior parts. although it does look greasy and splotchy when you first put it on it will even out over the next few hours.
on the exterior i use turtle wax brands, especially the carnauba wax. it provides a great shine and cleans good too. i had a 1982 dodge truck i got from a neighbor for 300 dollars. it had sat in his yard for 11 years under pine trees and when i got it home i waxed the paint (29 yr old factory paint) with the carnauba wax and honest to god my neighbor had thought i had repainted the truck when he saw it the day after i waxed it lol.