The ups driver just dropped off my new oil cooler w/new cooler lines. I located the hex under the shock mount that need to be loosened along with the little shock nut. The hex won't budge with the little angle one i have,and i'm terrified of stripping it. The radiator and oil cooler are ready,i have new lines,coolant and all,but I'm at a standstill because of not being able to lift theengine so i can get the stupid oil cooler lines installed. I don't want to give up. This is a 300td turbo wagon. What is the size of the hex?8 or 10mm. I guess a hex on the end of an extension w/a ratchet? Sorry for all the posts.bri