I am going to fire up my 3.0 140 Mercruiser for the firsttime after winter storage. <br />I just finished replacing manifold and riser, sprayed carb cleaner into the carbuerator...<br /><br />As I looked under the oil cap I noticed that on top of valves I have white substance that looks like white grease. I pulled the oil dipstick and there is no indication of water in the oil pan. <br />I will change the oil anyway as soon as I warm up the engine.<br />Do I need to clean valves with some kind of cleaner? <br /><br />What would you guys suggest as far as season preparation? Am I missing something important?<br />Considering the fact that some of the obvious things are in place (engine is mounted, outdrive attached) <br />
Thanks to all and Happy Safe Boating !!! 