So, I had what I am assuming was a blown shift shaft seal. Changed the lower oil and had a very slight amount of water in it. Just enough to turn the oil slightly. Pulled the lower and there was gear oil all over the top of the water pump and up the drive shaft. Anyhow, I always let a few ounces run out after I fill it. I have a 2005 Mercury repair manual for my 225 Pro XS. Bought I off of ebay. It has the torque master and sportmaster in it. For the capacities for a sportmaster it has listed 28 ounces. One bottle of gear lube is 28 ounces. I usually put one and half bottles then, let several ounces drain back out. So, should I be putting like 34-38 ounces in it or just 28 like the merc repair manual says to do?