Posted by Vaughn on Monday, February 06, 2006 at 10:54AM :
In Reply to: 318 engine camshaft discoloration.... posted by Jonas on Sunday, February 05, 2006 at 6:22PM :
Varnish from use of a non-detergent oil unless it is right under the tappet. If you're not the original owner, at some point the engine could have gotten hot. If it comes off with gas or other cleaner you may use, then it should be fine.