in-line 6 overheating problem

[moneyhole]

There is a pic of the motor on my album page, but you can't see the 3" round exchanger too good in that pic. I did measure it and it's 3" in diameter. I bought a complete stern water pump kit today...drained the lower unit just before the sun set and the grease/oil most lilely had water in it. It has that funky smell and is olive colored. If I reading the manual correct, I should be able to pull the lower unit without removing the prop. We'll see how it goes and pray for sucess!!