Hmm, why do you clean your truck? I have bathed her once in the past two years. I don't see the purpose. It isn't a show truck and the rain and a quick squirt with the hose does the trick. As far as the inside goes, I try to keep it cleaner, but that plastic is just a static nightmare and attracts more dirt, dust, dandruff than you can keep up, unless your name is Monk.