Recent Topics
50 cal. shell
by Donald - 05/29/20 01:52 PM
Fleet Farm Rotella T6 Sale + Shell Rebate
by shibby6600 - 05/29/20 01:26 PM
QS Ultimate Durability 5W-30
by js1956 - 05/29/20 12:51 PM
KPVD Eerily Deserted
by wings&wheels - 05/29/20 12:24 PM
BMW N55 Recommendations
by BSchmidt25 - 05/29/20 10:21 AM
Castrol / Mobil 1 blend?
by mbres2000 - 05/29/20 09:40 AM
My Henry 22 Magnum Rifle (pics)
by tig1 - 05/29/20 09:04 AM
overfilled my crankcase by 3/10 of a liter - problem?
by tom in boise - 05/29/20 08:49 AM
Espresso
by buster - 05/29/20 08:34 AM
I didn't believe there were fake spark plugs.
by JustinH - 05/29/20 08:14 AM
New Tire Selection
by artbuc - 05/29/20 07:44 AM
Well question
by supton - 05/29/20 07:11 AM
Cable Modem Thoughts/Recommendat
ions?

by alarmguy - 05/29/20 07:10 AM
Tire choice 2016 Lexus es 350
by Toros - 05/29/20 06:20 AM
Infineum trends: Passenger vehicles (2019)
by Gokhan - 05/29/20 05:11 AM
Another story from the service bay
by clinebarger - 05/29/20 12:11 AM
KIA TYPE 4 (M) ATF
by flinter - 05/28/20 08:49 PM
My new Henry 22 Magnum rifle
by tig1 - 05/28/20 08:45 PM
Mobil 1 M-102 for 3 6000km oil changes?
by pktrkt - 05/28/20 08:33 PM
Newest Members
Kboggs, oldcodger, cwllams1, Danwrig, DanielR
71558 Registered Users
Who's Online Now
90 registered members (53' Stude, AndyB, 1978elcamino, Alfred_B, ABN_CBT_ENGR, AandPDan, 7 invisible), 2,435 guests, and 29 spiders.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums67
Topics306,015
Posts5,284,853
Members71,558
Most Online4,538
Jan 20th, 2020
Donate to BITOG
Print Thread
Hop To
85w140 in gearcase ok? #5426101 05/11/20 08:01 AM
Joined: Apr 2016
Posts: 817
1
1978elcamino Online Content OP
OP Online Content
1
Joined: Apr 2016
Posts: 817
I usually use 75w90 in my outboard's lower unit. However, they only had 85w140 in stock so that is what I bought. Will be going in soon, any drawbacks to using the thicker oil? Still GL5 rated though. Outboard in question is a 2003 Suzuki DT225.

Re: 85w140 in gearcase ok? [Re: 1978elcamino] #5426108 05/11/20 08:11 AM
Joined: Dec 2017
Posts: 6,472
S
Snagglefoot Offline
Offline
S
Joined: Dec 2017
Posts: 6,472
You want a gear lube designated for marine use. It can handle a small amount of water coming through the seals. Ordinary GL-5 doesn’t meet the spec.


If you want the job done right......do it yourself.
Re: 85w140 in gearcase ok? [Re: 1978elcamino] #5426138 05/11/20 08:38 AM
Joined: Mar 2004
Posts: 24,449
D
Donald Online Content
Online Content
D
Joined: Mar 2004
Posts: 24,449
Marine gear lube.


2015 Ford F-250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)
Re: 85w140 in gearcase ok? [Re: 1978elcamino] #5426160 05/11/20 08:58 AM
Joined: Sep 2002
Posts: 4,606
G
Gebo Online Content
Online Content
G
Joined: Sep 2002
Posts: 4,606
Pay attention to Snagglefoot and Donald.


'98 LEX LS400 310K
'02 4Runner 250K
'05 Lex LS430 90K
'07 Lex GX470 75K

Shell Gas and Truck 5w-30
Amsoil OE 10w-30
Toyota ATF's and Coolant
Amsoil Gear Oil and Grease
Re: 85w140 in gearcase ok? [Re: 1978elcamino] #5428679 05/13/20 11:06 PM
Joined: Jun 2012
Posts: 34
W
whosmatt Offline
Offline
W
Joined: Jun 2012
Posts: 34
I'll go against the grain and state that any GL-5 oil is good (Marine branded is not necessary) BUT use the weight specified by your manual. My current outboard's instructions say, verbatim: "You can use any brand of lubricant that has a grade designation of API GL5 SAE 80 or 90 weight."

Use the right weight. Use marine oil if you can get it; it may help and won't hurt. But don't be afraid to use anything that meets the spec.

Last edited by whosmatt; 05/13/20 11:07 PM.
Re: 85w140 in gearcase ok? [Re: 1978elcamino] #5428785 05/14/20 07:22 AM
Joined: Dec 2017
Posts: 6,472
S
Snagglefoot Offline
Offline
S
Joined: Dec 2017
Posts: 6,472
The benefit of marine gear lube will be evident if you have water leakage past the seals.With the transom down wait a few days then loosen the lower threaded plug. If you get a bit of water tricking out prior to the lube you have some seal leakage. Marine grade can handle a small amount of water without getting emulsified into the oil. Look at you tube on how to change seals. It isn”t fun.


If you want the job done right......do it yourself.
Re: 85w140 in gearcase ok? [Re: Snagglefoot] #5428854 05/14/20 08:36 AM
Joined: Sep 2010
Posts: 12,821
4WD Offline
Offline
Joined: Sep 2010
Posts: 12,821
Originally Posted by Snagglefoot
The benefit of marine gear lube will be evident if you have water leakage past the seals.With the transom down wait a few days then loosen the lower threaded plug. If you get a bit of water tricking out prior to the lube you have some seal leakage. Marine grade can handle a small amount of water without getting emulsified into the oil. Look at you tube on how to change seals. It isn”t fun.


Snag … like where you stated “without” being emulsified … whereas some members in the past noted it tolerated water in the oil.
I have a little F60LA on a shallow water skiff … it runs in muddy/sandy conditions … just inches of water.
When I do my annual gear oil change … will get a few seconds of water from the plug and then good looking gear oil for a while. They are not mixing …

Re: 85w140 in gearcase ok? [Re: 4WD] #5432908 05/18/20 11:04 PM
Joined: Jun 2012
Posts: 34
W
whosmatt Offline
Offline
W
Joined: Jun 2012
Posts: 34
Originally Posted by 4WD

When I do my annual gear oil change … will get a few seconds of water from the plug and then good looking gear oil for a while. They are not mixing …


Fix that leak! I've run a leaky gearcase and the oil was always milky when changed, marine or no, super duper synthetic or just the plain old stuff. I didn't let it sit for a winter before changing though.

Re: 85w140 in gearcase ok? [Re: whosmatt] #5436460 05/23/20 07:09 AM
Joined: Jul 2012
Posts: 3,968
A
alarmguy Offline
Offline
A
Joined: Jul 2012
Posts: 3,968
Originally Posted by whosmatt
I'll go against the grain and state that any GL-5 oil is good (Marine branded is not necessary) BUT use the weight specified by your manual. My current outboard's instructions say, verbatim: "You can use any brand of lubricant that has a grade designation of API GL5 SAE 80 or 90 weight."

Use the right weight. Use marine oil if you can get it; it may help and won't hurt. But don't be afraid to use anything that meets the spec.


Ill agree with you to a point as well!

I would say, first follow the manual for the manufacturer.
After decades of owning MerCruisers mostly salt water but now fresh I always used their gear lube, never an issue. I liked the "stickiness" of it, many years ago I tried Pennzoil marine gear lube since I now boat in fresh water not as big a deal, felt so light and non sticky I drained it a couple weeks later and put the merc back in. Here is an interesting test, get some merc gear lube on your hands and try to wash it off, you just cant, then try the Pennzoil and its no problem washing it off ... interesting.

Well fast forward to today! For the first time I own a Volvo Penta. Anyway, manual says to use Volvo Penta Gear Lube or Mobil 1 (formally Mobilube SCH) Delvac gear lube which is what I am about to put in with no reservations simply because Volvo says to choose only those two, its also ref GL5. Im kind of excited actually, never knew about Delvac gear lube, seems it is used in some high end vehicles(among Porsche enthusiasts) in addition to the heavy duty commercial applications which its designed for, also has the MT spec.

Last edited by alarmguy; 05/23/20 07:13 AM.

14 Road King (current)
08 VStar 1300 Tourer
07 Suzuki C50
Re: 85w140 in gearcase ok? [Re: alarmguy] #5440505 05/27/20 09:36 PM
Joined: Jun 2012
Posts: 34
W
whosmatt Offline
Offline
W
Joined: Jun 2012
Posts: 34
Originally Posted by alarmguy
Originally Posted by whosmatt
I'll go against the grain and state that any GL-5 oil is good (Marine branded is not necessary) BUT use the weight specified by your manual. My current outboard's instructions say, verbatim: "You can use any brand of lubricant that has a grade designation of API GL5 SAE 80 or 90 weight."

Use the right weight. Use marine oil if you can get it; it may help and won't hurt. But don't be afraid to use anything that meets the spec.


Ill agree with you to a point as well!

I would say, first follow the manual for the manufacturer.
After decades of owning MerCruisers mostly salt water but now fresh I always used their gear lube, never an issue. I liked the "stickiness" of it, many years ago I tried Pennzoil marine gear lube since I now boat in fresh water not as big a deal, felt so light and non sticky I drained it a couple weeks later and put the merc back in. Here is an interesting test, get some merc gear lube on your hands and try to wash it off, you just cant, then try the Pennzoil and its no problem washing it off ... interesting.

Well fast forward to today! For the first time I own a Volvo Penta. Anyway, manual says to use Volvo Penta Gear Lube or Mobil 1 (formally Mobilube SCH) Delvac gear lube which is what I am about to put in with no reservations simply because Volvo says to choose only those two, its also ref GL5. Im kind of excited actually, never knew about Delvac gear lube, seems it is used in some high end vehicles(among Porsche enthusiasts) in addition to the heavy duty commercial applications which its designed for, also has the MT spec.

Well there you go. I stand by my recommendation, specifically the part that is RTFM smile

Re: 85w140 in gearcase ok? [Re: 1978elcamino] #5441545 05/29/20 08:22 AM
Joined: Dec 2017
Posts: 6,472
S
Snagglefoot Offline
Offline
S
Joined: Dec 2017
Posts: 6,472
Why not ask Amsoil?

Amsoil Marine gear oil.JPG

If you want the job done right......do it yourself.
Re: 85w140 in gearcase ok? [Re: 1978elcamino] #5441577 05/29/20 08:39 AM
Joined: Dec 2017
Posts: 6,472
S
Snagglefoot Offline
Offline
S
Joined: Dec 2017
Posts: 6,472
And a few words from Mercury Marine:

Mercury Marine gear oil.JPG

If you want the job done right......do it yourself.
Previous Thread
Index
Next Thread

BOB IS THE OIL GUY® Powered by UBB.threads™