Earlier today I added some water to my windshield washer reservoir and decided to check the engine oil. I just recently changed it (about 500 miles) using PP 5W20. With 97K miles on the engine this is the first time it has had synthetic oil.
Upon wiping the dipstick I noticed it left black soot on the towel. It has NEVER done this before. I wonder if the PP is doing its job and cleaning the internal engine? All my OCI's have been 3K-6K miles.
Pics below;
http://img850.imageshack.us/img850/7008/002bgou.jpg
http://img835.imageshack.us/img835/5553/006qwa.jpg
http://img96.imageshack.us/img96/4949/012frm.jpg
Upon wiping the dipstick I noticed it left black soot on the towel. It has NEVER done this before. I wonder if the PP is doing its job and cleaning the internal engine? All my OCI's have been 3K-6K miles.

Pics below;
http://img850.imageshack.us/img850/7008/002bgou.jpg
http://img835.imageshack.us/img835/5553/006qwa.jpg
http://img96.imageshack.us/img96/4949/012frm.jpg