does anybody else's dipstick do this? you can see in my photos where it is a darker black color and now it is warped in that section apparently this part is near the exhaust manifold, I'm just curious if anyone else has seen this or if it is unusual, I notice when I pull it out and the engine is warmed up the oil will smoke off the stick right there as well. just trying to figure out if I need to address this in some manner.