removing the oil cooler lines involves jacking the engine up yes? just removing them from the housing is all id need to do.. and the filter housing gasket will need replacing while im there to get it out of the way.. ill loose about a quart of oil doing this i bet.. might as well do an oil change while im there.. im going to have to find out the timing of the engine and pump.. ill contact dannym since he is by me and see if we can arrange a day to do that.. and get a woodruff key..and such a bunch of lil projects to change a part that cost less than 10$... i love mercedes benz.. then i have to install the plug and make sure its correct.. i need to find a source for one.. regular OEM but SS if i can find one just so i dont have to do this again in 21 years