after the engine is turned off, all the splashing oil up there drains back down to the pan, so no you dont have to worry about anything oil related. Just unscrew the covers and youl see what you see in that picture. the cams are lubes through pressurized oil passages in it. Pressurized oil goes through a hole in the front camshaft saddle, and there is a hole in the surface of the cam that slides against that, and everytime the holes match up while its spinning, oil gets pushed through that hole, that hole goes all the way down the center of the camshaft and there are holes on all the other slideing surfaces on the cam journals, and oil from the front is fed to those
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