i dropped off my liberty to get are the surface rust issues (lower door area and under the 3rd brake light) sanded and refinished. i'm amazed at all the rust on a 5 year old car... i know it's new england but i've owned alot of cars and never seen anything like it. my body guy said it would be a good idea to apply some engine oil to the areas prone to rust... said it would give it some protection against the elements. obviously only to areas that are invisible to the eye... i won't be giving it an oil rubdown.