When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
This has been covered before and from alot of peoples first hand experiance its normal well it was on my car. i Cleaned it off and kept an eye on it (never came back), it may not actually be oil but general scum from the coolant system.. My car is an MY95 WRX.