the lower braided oil cooler line has a rusty crimp clamp on 87 5000 turbo quattro. I am concern that it let loose some night want to do some preventive maintenance. What is a good source for this part and are there any pitfalls to watch out for? Also, if the bottom one is going, is top hose crimp clamp far behind. Is there anything in the archives and how do we access them? George K jkot@pitt.edu