I was planning to DIY detail my old car (to get ready to sell) but I dunno, I may just do the interior and leave the outside till as long as necessary because it has to stay outside and it will just get crap all over it again even if it's got the cover on. There's red stains all over it. I'm not sure if it's birds pissing blood or tree sap, because it still gets on the car no matter what species of tree I park under. The stuff won't wash off. I'm gonna try and claybar it and see what happens.