Texasmark
Supreme Mariner
- Joined
- Dec 20, 2005
- Messages
- 14,778
You know, hardly a day passes and you don't learn something new. We were talking about 3 and 6 jaw reverse clutches on the newer 60 (bigfoot)and 75-125 hp engines today so I had my serv man out and was looking the area over, beins I couldn't sleep and I wanted something to go with my cookies and milk. I accidentally stumbled across the following:
Milky colored oil MAY or MAY NOT indicate the presence of water in the lower unit. I already knew that if you had just run your engine, you could whip up the oil to the point where it would/could look yellowish due to aeration/agitation.
I also just read that if there is any (???) assembly lubricant, Special Lube 101, or 2-4-C Teflon mixed in with the lube it could look white or creamy.
The only way to really know whether or not water is present is to drain some out into a glass container and let it sit, like overnight. If water is present it will separate from the oil and obviously being heavier that the oil it will be on the bottom.
You already know this but since we are here, pressure testing (with oil drained) for 5 minutes maintaining 10-12 psig (that you pressurize it to) constitutes a sealed unit....course you have to have a screw out to do this so when you reinstall the screw (after filling) be sure you use a new blue washer, actually they all need to be new and on this lower unit there are 3; one drain and two vents with the front vent to be sealed first then the one in the center of the LU after solid oil is there also.
Now how about that. Like I said, learn something new every day.
HTH
Mark
Milky colored oil MAY or MAY NOT indicate the presence of water in the lower unit. I already knew that if you had just run your engine, you could whip up the oil to the point where it would/could look yellowish due to aeration/agitation.
I also just read that if there is any (???) assembly lubricant, Special Lube 101, or 2-4-C Teflon mixed in with the lube it could look white or creamy.
The only way to really know whether or not water is present is to drain some out into a glass container and let it sit, like overnight. If water is present it will separate from the oil and obviously being heavier that the oil it will be on the bottom.
You already know this but since we are here, pressure testing (with oil drained) for 5 minutes maintaining 10-12 psig (that you pressurize it to) constitutes a sealed unit....course you have to have a screw out to do this so when you reinstall the screw (after filling) be sure you use a new blue washer, actually they all need to be new and on this lower unit there are 3; one drain and two vents with the front vent to be sealed first then the one in the center of the LU after solid oil is there also.
Now how about that. Like I said, learn something new every day.
HTH
Mark
