Will spraying silicon spray in the intake contaminate the oil?

Never touched any gears. Never took the injector pump off either. I took the injectors off the pump while I dismantled the head to replace the gasket but that was it.

(This was posted by lugbolt in another thread)
-Choose a cylinder. #1 for example. Turn the engine over in it's normal direction of rotation until the exhaust valve JUST starts to open. Stop. Adjust intake valve. Once the Intake's seddddt, turn the engine until the intake valve is ALMOST closed (but not all the way). Check/adjust clearance on the exhaust valve. This method is almost foolproof if done correctly. Repeat the same process for the other cylinders.-

Reading this over again it seems that I was cranking the engine clockwise when it was supposed to be counterclockwise. Starting with the first cylinder I waited for the pushrod to start moving up pushing the spring down closest to the radiator. This on I'm sure is the intake valve as it corresponds with the hole for the intake. At this point I adjusted the lash on the exhaust valve. The only thing is the first spring going down means that intake is opening. Basically what I'm stating is that I think I just did the EOIC method backwards.