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#10930140 - 06/20/15 01:33 PM Overfill?
OneFishAway Offline

Registered: 02/17/15
Posts: 375
Loc: Haslet
Can you overfill a lower unit? I feel like I had to add more fluid than the fluid capacity chart showed. Thanks in advance...

PB 8.8 Joe Pool

#10930177 - 06/20/15 02:04 PM Re: Overfill? [Re: OneFishAway]
DFW-fisherman Offline
Extreme Angler

Registered: 04/01/11
Posts: 1191
Loc: DFW
I am wondering the same thing.

#10930190 - 06/20/15 02:15 PM Re: Overfill? [Re: OneFishAway]
FMJshooter Offline
Extreme Angler

Registered: 06/24/08
Posts: 1390
Loc: Belton, TX
Just fill until it starts dribbling out the top hole no more no less.

#10930915 - 06/21/15 12:34 AM Re: Overfill? [Re: OneFishAway]
JimmyP Offline
Pro Angler

Registered: 11/26/12
Posts: 798
Loc: Waxahachie, Texas
Make sure you have the lower unit level and like FMJ says just fill until you get a trickle of grease out the top hole. I imagine you could overfill and possibly blow out the seals but it is so simple to do it right the first time.

#10930943 - 06/21/15 05:02 AM Re: Overfill? [Re: OneFishAway]
TLW Offline
Extreme Angler

Registered: 11/16/06
Posts: 1974
Loc: ft worth
there is "one".. Merc Sporty that's usually found on tha Hi Perf division X, XS, Pro XS motors....if you are tha proud owner of one of these ya fill it like normal till it drips from tha top hole then drain 'bout 1 1/12 oz.

Edited by TLW (06/21/15 05:06 AM)

#10931044 - 06/21/15 07:58 AM Re: Overfill? [Re: OneFishAway]
gary purdy Offline
TFF Guru

Registered: 05/24/03
Posts: 10465
Loc: Littlefield Tx & Lake A. H. US...
To answer your question yes you can over fill a lower. The lower needs a small void area for heat expansion. Early 3L Mercs have been known to only put 32oz in the lower or the oil can push the top seal out. I have found some motors that you can not let all down for correct fill check and I will refer to motor spec`s for lower units capacity.
“The world will not be destroyed by those who do evil, but by those who watch them without doing anything” GOD IS GOOD


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