Coolant spots on cooling fan

[krellmk]

Open the hood on my SLS saw something that didn't look too good .. saw greenish gray spots on the cooling fan frame right below the overflow coolant bottle also green stain on the overflow coolant bottle should i take the car back to the dealer let them check it out?

[Wonson92]

I had thos, make sure your coolant cap is in properly, my service center didnt replace the lid properly, i noticed the coolant but assumed it was spilled when filling, eventually on a long trip it came open to a rather large gap and ended pretty badly. Im amazed that this happened to someone else (assuming its the same problem)

[KuroNekko]

Coolant can boil if the radiator is not properly pressurized of if the engine nears overheating. Often times, spray around the reservoir is from boiling coolant entering the overflow reservoir from the engine and a little spraying out (the reservoir is not pressurized and often has an opening for overflow to pour out). What needs to be pressurized is the radiator. Check the cap to make sure it is on snug. If the problem persists, you may need to replace your radiator cap and/or get the cooling system pressure-checked.

[krellmk]

3K miles on the car.. should this be happening this early just got my first oil change last week

[KuroNekko]

Many oil change places will check your coolant while draining the oil (to recommend service, if needed...or not). Anyhow, there is a good chance that the person who checked your radiator coolant did not replace the cap properly. You should remove it and then replace it snug with a slight downward pressure to ensure proper seal.
I would not worry too much about it unless your coolant boils frequently.
Try that and clean the overflow residue. Drive the car normally and after a day or so, check to see if you have any more leaks.

Also, always wait for the engine to cool down before removing the radiator cap. When hot, the coolant is highly pressurized and can boil and erupt once the cap is removed (radiator depressurized).

[murcod]

Could be a simple case of too much coolant in the system and it's vented the excess when hot. I know mine is way above the full line- it was like that from new.

[krellmk]

Took car to dealer today to check the coolant leak they found a gasket was missing from the overflow cover #13 and get this the dealer wanted to charge me $2 for the gasket