Red corrosion build up around oil filter thread?
Hello, last time I changed my oil I noticed a weird build up of something around the oil filter threads. It chips off if you go at it with something hard like a screw driver, but not very nicely. Under it the metal seems slightly discolored. I took a picture as is posted. Chipped a small amount out but decided to leave most of it. Only difference in driving is that I recently have moved to 8k feet and store it in the cold in the winter. Using Suzuki Oil. bike has 25k on it and is an "08. Any thoughts?
