Coolant expansion hose - leak fixed - upgraded part number
 

Beware that your relatively small diameter coolant expansion hose on SL65 AMG can rub on a surface in the engine compartment and with wear can create a hole.......coolant light came on and opened hood to see spraying antifreeze all over the engine, etc.....I ordered the hose from parts.com com for $39.00 and replaced it in under 10 minutes with removal of engine cover.......I noticed that MB upgraded the hose with a fabric cover over the portion of the hose that rests on a surface to prevent this one developing a hole from doing what happened with the rubbing with the original hose........part number changed from 1025 to 1125 last 4 digits.....you SL 65 guys might want to check yours for this wear.....and prevent a leak in the middle of nowhere....:D