Lower Unit Oil looks like Honey Mustard Salad Dressing

[TD_Maker]

Hello to all,

I am the guy with a 2003 Johnson 90 (Bombardier) I am going to cut to the chase. After replacing the drive shaft seals, the prop shaft seals, and the the filler screw crush washers, my lower unit is still taking in water from some place. Vacume testing holds all day at 10-12 lbs. Pressure testing is holding with no leaks.....as long as the drive shaft is not disturbed.

In a previous posting, I stated that my drive shaft seemed unusually loose once the water pump housing was removed. I was told this was normal because I had a two piece drive shaft, and it was supposed to be this way. HOWEVER, I noticed that when I rocked the drive shaft while under pressure or vacume, the drive shaft seals leak air like crazy. I suspect this is the reason for my leakage. Problem is, I don't know where to go from here.

Can someone PLEASE give me some idea of where to start looking?

Thanks
PS I also noticed that I have a slight vibration at low speed. Coincidence?

 

[Faztbullet]

Re: Lower Unit Oil looks like Honey Mustard Salad Dressing

I noticed that when I rocked the drive shaft while under pressure or vacume, the drive shaft seals leak air like crazy. I suspect this is the reason for my leakage.

This is normal......

I also noticed that I have a slight vibration at low speed. Coincidence?

Yep.....

Lower Unit Oil looks like Honey Mustard Salad Dressing

Sounds like you using a automotive 80/90W gear oil as these lack foaming agents and oil aerates making it a baby crap yellow. This oil is designed to run in a vented gear housing, refill with a marine grade oil or synthetic .

 

[TD_Maker]

Re: Lower Unit Oil looks like Honey Mustard Salad Dressing

I was using tht 80w90 Marine Stuff from Pennzoil in the yellow bottle....from Wally World. Baby Crap Yellow....Thats exactly what it looks like. And It IS FOAMING