hi out there ive got a 1986 evinrude e40elcde its been sitting in the shed for about 3 monthsand the motor been tilted half way up i lowered the motor down to give it a run and i noticed a bit of oil driped out from around the propellor about 3 table spoons the oil.It was very clean and it smelt more like gear oil not outboard oil i can not see any more leaking out, How can i check it to see if is leaking out of the rear seal. and if it is the seal at the propellor shaft do i have to pull the whole gears out to change it and is it simple to change any info is appreciated thanking you all Tony