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Brush Hog Gear box lube #2586032
04/01/12 01:51 PM
04/01/12 01:51 PM
Joined: Dec 2010
Posts: 57
Carthage, TX
lilred67 Offline OP
lilred67  Offline OP

Joined: Dec 2010
Posts: 57
Carthage, TX
i replace the input shaft seal on my brush hog and i'm going to re-fill with gear oil. Owners manual calls for EP 90 gear oil. Would EP 85-90 or 85-140 be a suitable replacement gear lube? Or should i stick with the straight 90?

Last edited by lilred67; 04/01/12 01:52 PM.

1967 C-10 Chevy truck, 350 V-8
2002 ford F-250 4x4 superduty, 7.3l powerstroke w/183,000 miles
2018 Toyota Tacoma 4x4, 3.5l V-6 w/28,000 miles
Re: Brush Hog Gear box lube [Re: lilred67] #2586049
04/01/12 02:11 PM
04/01/12 02:11 PM
Joined: Oct 2008
Posts: 994
Northern, NY
Rob_Roy Offline
Rob_Roy  Offline

Joined: Oct 2008
Posts: 994
Northern, NY
Assuming the gearbox doesn't run excessively hot, 80w90 or 85w90 should be fine. Keep an eye on the condition of the oil...it seems like those gearboxes love to collect moisture.


2016 Ford Expedition EL Platinum
2016 Ford Expedition XLT
1999 Ford F350, V10
Re: Brush Hog Gear box lube [Re: lilred67] #2586211
04/01/12 04:42 PM
04/01/12 04:42 PM
Joined: Jun 2002
Posts: 20,216
Iowegia - USA
MolaKule Offline
Global Moderator
MolaKule  Offline
Global Moderator

Joined: Jun 2002
Posts: 20,216
Iowegia - USA
For Texas I would use

http://www.amsoil.com/storefront/svt.aspx

or an equivalent Mobil or a Redline gear oil.


"Science is a body of knowledge, a 'recipe', as it were, for reality. The totality of science is a collection of hard-earned nuggets, using math as a language of expression." Chip Cohen
Re: Brush Hog Gear box lube [Re: lilred67] #2586218
04/01/12 04:47 PM
04/01/12 04:47 PM
Joined: Aug 2004
Posts: 1,324
Michigan born but my heart bel...
JR Offline
JR  Offline

Joined: Aug 2004
Posts: 1,324
Michigan born but my heart bel...
i run conventional 80w-90, 85/90w-140 in my box. that because i change it often because these thing seem to collect moisture.


97 F250HD 7.3 320K 01 Astro 220K
93 metroXFi 94.5K
01 Impala 300K
04 RTV900R 1150hrs


Re: Brush Hog Gear box lube [Re: lilred67] #2586501
04/01/12 09:20 PM
04/01/12 09:20 PM
Joined: Dec 2010
Posts: 57
Carthage, TX
lilred67 Offline OP
lilred67  Offline OP

Joined: Dec 2010
Posts: 57
Carthage, TX
thanks for your reply's. i filled it with Valvoline semi-syn 85/140 i had on hand.


1967 C-10 Chevy truck, 350 V-8
2002 ford F-250 4x4 superduty, 7.3l powerstroke w/183,000 miles
2018 Toyota Tacoma 4x4, 3.5l V-6 w/28,000 miles
Re: Brush Hog Gear box lube [Re: lilred67] #2590921
04/05/12 03:34 PM
04/05/12 03:34 PM
Joined: Aug 2005
Posts: 4,563
NW Ohio
Jim Allen Offline
Jim Allen  Offline

Joined: Aug 2005
Posts: 4,563
NW Ohio
I used LE-607 in mine, from Lubrication Engineers in Texas. No longer produced but it was a straight 90 grade designed for industrial gearboxes.


Jim Allen
Keepin' the Good Old Days of Four Wheeling Alive
Re: Brush Hog Gear box lube [Re: Jim Allen] #2594446
04/09/12 12:31 PM
04/09/12 12:31 PM
Joined: Dec 2010
Posts: 555
MA
fpracha Offline
fpracha  Offline

Joined: Dec 2010
Posts: 555
MA
Originally Posted By: Jim Allen
I used LE-607 in mine, from Lubrication Engineers in Texas. No longer produced but it was a straight 90 grade designed for industrial gearboxes.
The Duolec LE 1605 replaces the LE 607.

Re: Brush Hog Gear box lube [Re: fpracha] #2597765
04/12/12 02:54 PM
04/12/12 02:54 PM
Joined: Dec 2006
Posts: 152
Indiana
Dieselbob Offline
Dieselbob  Offline

Joined: Dec 2006
Posts: 152
Indiana
Is the moisture coming from the machine being stored outside, or is it just drawing condensation?

Re: Brush Hog Gear box lube [Re: lilred67] #3393863
06/10/14 10:51 AM
06/10/14 10:51 AM
Joined: Oct 2013
Posts: 78
pa
dixon700 Offline
dixon700  Offline

Joined: Oct 2013
Posts: 78
pa
What about synthetic 75w-90?


04.5ram CTD lots of parts delvac15w-40 just delvac next time Donaldson elf7349 02 elantra gt castrol edge10w-30 oem filter
Re: Brush Hog Gear box lube [Re: lilred67] #3394366
06/10/14 09:14 PM
06/10/14 09:14 PM
Joined: Jul 2013
Posts: 1,884
Ottumwa, Iowa
jhellwig Offline
jhellwig  Offline

Joined: Jul 2013
Posts: 1,884
Ottumwa, Iowa
Corn head grease mixed with regular grease. You can run with a seal out with that.


Sparks fly from my fingers.

1995 Chevy K2500 Suburban lt 5.7
2014 Toyota Sienna
1983 Chevy K5 350
Re: Brush Hog Gear box lube [Re: lilred67] #3394848
06/11/14 02:10 PM
06/11/14 02:10 PM
Joined: Apr 2014
Posts: 642
MN
ironman_gq Offline
ironman_gq  Offline

Joined: Apr 2014
Posts: 642
MN
cornhead grease is pretty fluid when it warms up but does stiffen up when it cools off, it would keep it from drooling as much from a leaky seal when the machine is sitting. Not sure how well it would lubricate the unit in this application.

Re: Brush Hog Gear box lube [Re: lilred67] #3398138
06/15/14 11:52 AM
06/15/14 11:52 AM
Joined: Feb 2013
Posts: 534
Louisiana
SuzukiGoat Offline
SuzukiGoat  Offline

Joined: Feb 2013
Posts: 534
Louisiana
We run mystik 80w90.

I had a 40 year old bush hog that leaked a half quart an hour, grease fitting and four tubes of grease later...the box outlast four belly repairs.


2003 Nissan Xterra 4x4 M1 HM 10w40
2001 Toyota 4runner 4x4 M1 0w40
2016 Yamaha YXZ1000R VR1 20w50

Re: Brush Hog Gear box lube [Re: lilred67] #3398493
06/15/14 09:19 PM
06/15/14 09:19 PM
Joined: Jan 2009
Posts: 1,422
Watertown, New York
cronk Offline
cronk  Offline

Joined: Jan 2009
Posts: 1,422
Watertown, New York
I've been running 85w140. Those boxes take a beating, the thicker the film strength, the better!


2008 Ford F350
2003 Chevy Cavalier
2011 Nissan Quest
1986 Pontiac Trans Am
1940 Ford 9N Tractor
Amsoil lubes and filters!
Re: Brush Hog Gear box lube [Re: lilred67] #3413205
07/03/14 07:50 AM
07/03/14 07:50 AM
Joined: Jun 2014
Posts: 236
In the field
Alltherage Offline
Alltherage  Offline

Joined: Jun 2014
Posts: 236
In the field
our bush hog finish mower has a bad bottom seal. I switched from gear oil to JD cornhead grease and it improved in terms of leakage. It's changes from a soft solid when cold to a gear oil type substance when warm. I researched it quite a bit before using it and see no issues at all. It still leaks though, so now I want to mix the regular grease in with it or go to 100% grease. Seems that many others have had success with that when confronted with a really bad seal.

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