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No gear lube draing lower unit

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Dano911

New member
I have another quick question I hope, I recently disassembled my drive and lower unit and drained all the gear lube out of reservoir and lower unit .(I have a Alpha 1, 2ng Gen) and reassembled. Bought amsoil 75W - 90W and filled the reservoir halfway and took out the vent and oil plug in the lower unit hoping to flush the system with the amsoil but the reservoir has the same amount of gear lube in it from two days ago and nothing has drained from lower unit any idea ? or is this normal? the vent and oil plug are still out .


Thank you again in advance you guys are great.
 
YOU MUST FILL THE LOWER UNIT FROM THE BOTTOM DRAIN HOLE..........PERIOD!!!!!!!!!!!

iF you do not you will be replacing the entire outdrive. Do not second guess this.. Many a home owner doing gear lube replacement has failed to do it this way and it is a very costly mistake!

ALso I would strongly reccomend the MERCRUISER Hiperfomance semisynthetic gear lube as the Manfacturer RECCOMENDS!!!!!!!!!!!!

There is no need to flush the system unless it is full of water.............If you are doing it because you were tricked into using AMSOIL then I would reccomend removing the resevoir and hose and dumping the AMSOIL and using what 99% of all mecruiser owners and service personel use, MERCURY HI PERFORMACE GEAR LUBE

No need for you to be one of the 1%
 
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No need to flush your unit, and you'll be just fine with AMSOIL if it's properly installed and maintained. Of course Mercury recommends their stuff, they don't make money if you use AMSOIL ... :cool:
 
Dano911 said:
I have another quick question I hope, I recently disassembled my drive and lower unit and drained all the gear lube out of reservoir and lower unit .(I have a Alpha 1, 2ng Gen) and reassembled. Bought amsoil 75W - 90W and filled the reservoir halfway and took out the vent and oil plug in the lower unit hoping to flush the system with the amsoil but the reservoir has the same amount of gear lube in it from two days ago and nothing has drained from lower unit any idea ? or is this normal? the vent and oil plug are still out .


Thank you again in advance you guys are great.
Click to expand...

Ayuh,... Take the bottle off, 'n clean it separately,... they gunk up on the bottom sometimes...

clean the vent in the cap too...
 
Curmudgeon said:
No need to flush your unit, and you'll be just fine with AMSOIL if it's properly installed and maintained. Of course Mercury recommends their stuff, they don't make money if you use AMSOIL ... :cool:
Click to expand...

I personally have never used Amsoil.
I participate on a few other NON boat web sites and the Amsoil suggestion and questions come up alot.

About 1% use this product.

Mercury's hiperformance gear lube is a specifically designed gear oil for there products.

As I said I have never used Amsoil but I HAVE used hiperformance hear lube in my 1987 alpha one since 1995 exclusively and have not had a problem.

considering it typically only needs to be changed once a year, cost or proffit is not and should not be a concern........if you cant afford the cost of two quarts you should not have a boat to begin with.

JMHO
 
Thanks for all the help I will do what you all said . Didn't get tricked into amsoil I use it every vehicle just thought it was a good idea. Thanks again for all the help
 
Dano911 said:
Thanks for all the help I will do what you all said . Didn't get tricked into amsoil I use it every vehicle just thought it was a good idea. Thanks again for all the help
Click to expand...

Ayuh,.... I wouldn't say it's a Bad idea,...

Merc's Hi-performance gear lube is a full Syn-oil, with a pretty dye for color,...

I've been usin' Mobil 1, 75W-90 in all my drives for Years, without issue....
It's 'bout the same oil, without the pretty colored dyes...
 
Use what you want as long as it meets the 'GL' rating called for, install it correctly, maintain it correctly, and change it at least once a year, and be a happy boater. Anyone who says you must use this or that has a personal brand preference disguised as a 'must use' ... :)
 
Curmudgeon said:
Use what you want as long as it meets the 'GL' rating called for, install it correctly, maintain it correctly, and change it at least once a year, and be a happy boater. Anyone who says you must use this or that has a personal brand preference disguised as a 'must use' ... :)
Click to expand...

Please note, he came here to ask for help. some here provide that help. almost if not all who contribute here do NOT work for or represent any interest other than there own.

Suggestions and reccomendations typically come from professionals either who have or still work in the marine repair field

If you dont like our reccomendations or suggestions keep you opinion to yourself or "suggest" an alturnative.

Many of us have made or make a living doing this so as many who come here and ask, we answer the best we can.

Are we always right, no of course not.

But if it were me working on his boat I would use what I have said I use.

When I do a repair I use mercury parts and accesories almost exclusively.

Why?

I know they work.



Yes oils are like opinions and A$$holes............everyone has one!

Just Sayin................
 
So, what is it you take issue with, kghost, or is it that I dared to even take issue at all? The OP brought up AMSOIL, and you offered your opinion, as did I. I've used both products without a problem, and you haven't, so let's just leave it by suggesting sometimes experience is as valuable to someone seeking advice as opinion. And sometimes it might even be better. Just sayin ...
 
I participate on a few other NON marine web sites and the AMsoil question comes up a lot.
Many times by Amsoil representitives hiding as a regular contributor. No always but sometimes......just seems fishy, pardon the pun.

I have never used it, I have no plans on using it, I found it VERY odd that a person with what I assume, very limited experience would come up with using something other than what was already in his outdrive without outside influence.........very strange......Hundreds if not thousands of questions on this subject on this site and this is one of the first I remember asking about using AMSOIL in the outdrive........

WHat one uses for motor oil is typically what ever one wants, But as far as the outdrive goes mercury did not come up with there gear oil "so they could make all the money" Believe me when I say this stuff is very good and does what it is intended to do.

I highly doubt Amsoil has much if any time or research validation on there gear oil being used in an outdrive. In a rear end, manual trnasmission maybe but not in the Marine enviroment I would suspect.

Mercury has Millions of hours of proof..........That alone is reason enough for me.

Again Just my opinion.......no ill intent meant........
 
Here is how good the Mercury High Performance gear oil is.

At a ratio of 75% water and 25% Merc High Pro gear oil your Gen II drive will not see any damage.

Do you trust your Amsoil at that ratio?

Is the three dollars you save using Amsoil worth it?
 
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I'm not sure what I started with the oil ( my bad?) I'm a F/F and we've used amsoil in our rigs for 16 years the original question was why is the reservoir still full when the the vent and oil plug are out ( boat is in dry dock) not the oil. So sorry for any confusion . Thanks.
 
Dano, oil wars are about as numerous as Ford v. Chevy, or Mercury v. Brand X. Each has ardent proponents, some even know what they're talking about. Like I said, use any lube that meets the required GL rating and you'll be fine. As for the problem you have, I don't have an I/O, but I'm pretty sure you got good advice on filling the LU from the bottom. I don't have a clue about the plumbing of the reservoir, but it's a good bet the problem has nothing to do with your choice of lube. If you've used AMSOIL, you know what it does and what it doesn't, and I suspect you're intelligent enough to know your lower unit won't last very long with 75% water regardless of who makes the other 25%. Or 'claims' otherwise. The knock against AMSOIL full synthetic gear lube (which has been around for 40 years or so) used to be "oh, it's so much more expensive', now the mantra seems to be "is it worth the $3 you're saving? Really, guys?
facepalm.gif


Disclaimer: I only use AMSOIL in my outboard, and I'm not an AMSOIL salesman in mufti. I don't even know anyone personally who sells it, but I do know quite a few who use one or more of the products. None of us have warts, just well running and reliable equipment ... ;)
 
The reason it wont drain is one of a couple of reasons.

1 without the drive running there is a vaccum created towards the resevoir.

2 the gear oil is to dam cold to move

3. Air bubble in rubber tube.


When a outdrive is filled from the drain until it comes out the vent. All plugs put back in
Drive run. The bottle will empty and fill the remaining air space left in the upper gear case.
I believe this is due to the drive creating pressure and it forces the air back thru the tube to the resevoir
Inturn the oil flows bak to the drive... So if the drive is not running very little if any oil movement.

I think this is why... Someone can correct me if I am mistaken...
 
Thank you so much for the last couple post they were extremely helpful and I will take note. With that being said " I'm out"
 
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