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Ford 9N, 2N & 8N Discussion Forum
Show Parts for Model:

gear oil

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javalina al

03-01-2005 17:12:13
64.12.117.10



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Bought some GL1 90 wt. tranny gear oil by mistake for my 52 8N. I now realize I shoulda bought GL3..Is this a big problem? Can I use it or should I give it to my friend with a 48 8N?




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Jack (NV)

03-02-2005 19:40:14
63.151.182.19



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 Re: gear oil in reply to javalina al, 03-01-2005 17:12:13  
I called 1 800 TEAM VAL to get Valvoline's tech support's opinion on this subject and they insist on GL1. Valvoline doesn't think that GL5 is good for the hydraulic pump. I know that there are N owners that have run GL5 without any problems.



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TERRY P

03-02-2005 15:30:07
64.12.117.10



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 Re: gear oil in reply to javalina al, 03-01-2005 17:12:13  
THESE OLD TRACTORS OVER THE YEARS HAVE RUN EVERY KIND OF GEAR OIL YOU CAN THINK OF. EVERY THING FROM 80W 90 TO HYD FLUID. LONG AS IT'S 80W-90W IT WILL BE ALRIGHT. SOME PEOPLE RUN THE HYD OIL BUT TRACTOR WAS MADE TO HAVE THE HEAVIER OIL. OLD LOOSE TRANSMISSION WILL RUN ALOT SMOOTHER TOO.



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Carl K

03-02-2005 14:54:40
207.69.138.136



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 Re: gear oil in reply to javalina al, 03-01-2005 17:12:13  
My 1950 8N owners manual recommends 80 or 90W MILD EP gear oil. The EP additives protect the rear end gears. The GL-1 stuff has NO EP additives. The GL-5 stuff has too much additives. Too much is supposed to eat up yellow metal. Please read the link to Pennzoil GL-4. It has the EP additives, but not so much as to cause problems with yellow metal. It's your tractor, use what you feel comfortable with. I feel comfortable with GL-4 in mine.

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souNdguy

03-02-2005 07:13:09
12.77.214.111



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 Re: gear oil in reply to javalina al, 03-01-2005 17:12:13  
The gl-1 is pretty close.. and 'good enough'.

There is also some ford tranny fluid at TSC.. not sure of its gl-rating.. but it is either 1 or 3.. and your not apt to find much difference anyway..

Soundguy



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Bruce (VA)

03-01-2005 17:15:10
24.125.143.171



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 Re: gear oil in reply to javalina al, 03-01-2005 17:12:13  
You got the right stuff, GL-1, not GL-3 for the N's. Or, NAPA part number 65-205 90w mineral oil. I've never heard of GL-3 being recommended for any N.



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javalina al

03-01-2005 17:24:40
64.12.117.10



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 Re: gear oil in reply to Bruce (VA), 03-01-2005 17:15:10  
I actually got that info from this web site..reference "FORD N-SERIES Transmission/Hydralic Fluid" from the archives...It says around 1950 ford specs called out "mild EP gear oil M4864A" which is GL3.... What is that all about? None of my manuals give any info....just fluid levels.



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Bruce (VA)

03-01-2005 17:39:40
24.125.143.171



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 Re: gear oil in reply to javalina al, 03-01-2005 17:24:40  
Because I don't have enough computer smarts to post a link, do an archives search on "the full story on"; the 22nd hit will be from 8/28/03 by llamas & it will tell you more than I could ever paraphrase. As I read it.......Ford/NH recommends their 134D fluid, and GL-1 is about as close to 90w mineral oil as you can get.



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javalina al

03-02-2005 18:14:40
205.188.117.10



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 Re: gear oil in reply to Bruce (VA), 03-01-2005 17:39:40  
now i'm really confused...GL1..GL3..GL4? the info I had before said to use the "EP" or extreme pressure, GL3, in Ford 8N's after 1950... mines a 52...will this GL1 cause damage without the additives? I mean we're talkin $20 for 5 more gallons and if there's any doubt I'll buy more. This is my 1'st tractor an she's a beaut, runs like a top..I don't wanna screw things up...Thanks to all replies.....

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