Does this gearcase oil have water in it?

[redfishsc]

This oil is brand new--- only been in the test-tank for a couple hours and a half day fishing today.




I dropped the oil today to see. The reason I dropped it was because the driveshaft on my motor has some pitting in the spot where the shaft passes through the water pump, through the gearcase cover. It seemed to me like it might have a weak seal around the shaft. I replaced both of those round seals (correct installation was ensured) but there seemed to be a touch of slop. If this is indeed the problem, I'm not replacing the drive shaft unless I find a real good deal on a used one (1983 Johnson 7.5hp).



It's the right "color" but I can't tell if this is normal coloration from a day's use, or if it has some water in it. The oil is the same color it was coming out of the bottle, but it has a hazy tint to it. It's not white at all. The oil was dropped about 45 minutes after I pulled the boat from water. Was in freshwater.






So--- I see haze, and the bubbles in the bottle are either residual water from the water-bottle itself, or air bubbles. But does the color/transluescency of this oil look like it has water in it?

 

[Will Bark]

Mix it up by shaking then pour some in a glass container a let sit overnight if water it will separate and be evident.

 

[redfishsc]

I'm actually doing that right now, thanks! Hopefully we'll see sometime in the next day or two. I've had it suggested to me that the oil was just "dirty", even though it's basically brand new. I suppose there was enough residue still in the gearcase to haze it up.

I'll use some thin motor oil to flush out the gearcase and refill it with fresh gearcase oil if I get no water separating out of it.

 

[racerone]

Pressure tests are done on gearcases to find leaks !