How to isolate coolant leak
Technical Article Contributor
Joined: Oct 2005
Posts: 25,641
Likes: 19
From: MI
That's really nothing, a little blow by. Happens when you don't run a Motorcraft PCV valve. Or change a higher quality engine oil.
The red stain is water /rust from the plug itself.
The red stain is water /rust from the plug itself.
