Got my carfinally and they had it detailed, its really greasy everywhere on the inside and its a realy ****ty feeling what do you guys recommend?? (im going todo all the plastic/leather seats etc and shampoo the carpets)

 

You can use an all-purpose cleaner diluted 10:1 (water:cleaner) to wipe down all of the rubber, plastic, vinyl, etc.

 

and this should remove all that crappy residue?? after that ima do the leather cleaner and some plastic restorer?? (which iv never used before what do u guys recommend)

 

If it's not strong enough, you can use a 6:1 ratio.

I use Zaino Z9 and Z10 for leather in decent condition.

What do you mean by plastic restorer? Plastic polish?

 

something to protect the 12 y/o plastic and make it good

 

I've never "protected" my plastic. I've just used a plastic polish a time or two.