I have acquired a 30hp motor that has to my knowledge not been run since 1970 the last year it wass registered. <br />I am new to this motorboating..... Maintenance manual on order... Engine did not run when I got it. after cleaning and setting points, filling the lower unit with gear oil recommended by the local boat dealer, filling a 55gal drum with water this baby popped right over and idles smoothly (the neighbor says) <br /><br />After I was satisfied it was running ok I drained the water drum then thought I would check the lower unit again, well my oil turned a light brownish color .... like water got into it???? <br /><br />Is this Normal Or do I have a problem???