Took the time to address the coolant leak from these plugs on the S280, the top one was pretty loose and tightened quite a bit. The bottom one I was able to get with a bit and a socketing wrench a week ago, but the top one was also leaking which meant the turbo had to be unbolted to get enough room. Seemed the crush washers weren’t torqued enough. I should have checked them before install but since I thought they were pre installed they should have been good to go. Anyone who plans on getting a S280 I’d double check the torque to make sure yours doesn’t leak. Took it out for a drive and bone dry. Will check in a few days to verify the leak is gone.