09-20-2009, 03:53 PM
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#1 (permalink)
| | Veteran Member
Join Date: May 2004 Location: Innisfil, Ontario, Canada
Posts: 1,971
|  Front axle lube.
Getting ready for pre-winter maintenance, and wondered if it is ok to use 75w90 syn gear oil in the front axle instead of Permatran?? | 
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09-22-2009, 10:19 AM
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#2 (permalink)
| | Silver Member
Join Date: Jun 2006 Location: Alberta,Canada
Posts: 106
| Re: Front axle lube.
I was wondering the same thing, as I am going to change out my front axle with AMSoil Xtreme gear 75W90. Maybe overkill ? | |
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09-22-2009, 11:50 AM
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#3 (permalink)
| | Veteran Member
Join Date: May 2004 Location: Innisfil, Ontario, Canada
Posts: 1,971
| Re: Front axle lube.
Quote:
Originally Posted by madhatter  I was wondering the same thing, as I am going to change out my front axle with AMSoil Xtreme gear 75W90. Maybe overkill ? | My concern is the winter months, when the FWA is engaged all winter long. I want something that can handle this, and not break down to fast. I need to change the Permatran out anyway.
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09-22-2009, 12:02 PM
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#4 (permalink)
| | Gold Member
Join Date: Mar 2006 Location: Connecticut
Posts: 371
| Re: Front axle lube.
I would run gear lube also. As far as the Synthetic stuff, I wouldn't change to that unless you have a few hundred hours on the machine to make sure everything broke in good. I'm usually not a supporter of synthetic, but I think your situation with the cold is a good reason for using it. | |
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09-22-2009, 12:15 PM
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#5 (permalink)
| | Veteran Member
Join Date: May 2004 Location: Innisfil, Ontario, Canada
Posts: 1,971
| Re: Front axle lube.
Quote:
Originally Posted by MFRED I would run gear lube also. As far as the Synthetic stuff, I wouldn't change to that unless you have a few hundred hours on the machine to make sure everything broke in good. I'm usually not a supporter of synthetic, but I think your situation with the cold is a good reason for using it. |
Thanks We are just under 200 hours now, so I figure the time is good.
What about the gear box on the mid mount mower?? 75W90 too??
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09-23-2009, 07:16 AM
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#6 (permalink)
| | Gold Member
Join Date: Mar 2006 Location: Connecticut
Posts: 371
| Re: Front axle lube.
I'd check the specs on what's in there. I thought it was some funky weight oil for some reason. | |
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09-23-2009, 08:05 AM
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#7 (permalink)
| | Veteran Member
Join Date: Oct 2006 Location: N.E., Ohio
Posts: 1,500
| Re: Front axle lube.
The book of MF says, it is okay to use either the Permatran, or gear lube, in the front axle. Even if they did not suggest it, I would still use the gear lube.
You want to use a gear lube with the "EP" designation. These gears can generate very high pressures that really need this kind of protection.
You can switch to synthetic at the 50 hour service. Recommending using mineral oil for a "break in" period is becoming a thing of the past. Today's mineral oils are extremely good lubricants, other than they break down faster, and don't have the temperature latitudes of synthetics, there is little difference. | |
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09-23-2009, 01:32 PM
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#8 (permalink)
| | Silver Member
Join Date: Jun 2006 Location: Alberta,Canada
Posts: 106
| Re: Front axle lube.
Quote:
Originally Posted by WilliamBos Thanks We are just under 200 hours now, so I figure the time is good.
What about the gear box on the mid mount mower?? 75W90 too?? | Decided to go with AMSoil Severe Gear 75W90 in the front axle and Severe Gear 75W110 in my mower and tiller gear box. Not sure if I really need it, but the more protection the better I feel !  | |
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