just use plenty of spray oil ,this will stop it! i use oil sray , inoticed my tank straps the otherday were getting rusty so i sprayed them with oil as well!
mate i will allways use oil all over the van , i have allso drilled out the front arches ans filled them in oil ,this was a tip from transigeoff and the idea is to get the oil in the front arches before they go like lostpauls i think i will be keeping the van for a wile so i dont want rust!