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Fordson Tractors Discussion Forum

oil question on power majors

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brycestrom

12-06-2013 08:54:06
70.40.57.151



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does anyone know what type of oil works best in the transmission and rear end of a power major diesel with the hydraulic 3 point lift, does just plain universal tranny tractor hydraulic fluid suffice or is there a better choice that optimizes the hydraulic lift




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tiresntracks

12-08-2013 09:53:28
76.220.192.162



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 Re: oil question on power majors in reply to brycestrom, 12-06-2013 08:54:06  
The book says to use 20w-30 in the engine transmission and differential. Since 20w-30 is pretty hard to get these days, I use 15w-40.
Your rear end is also your hydraulic reservoir. You wouldn't use 90w in your hydraulics, would you?



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Graham Barrington

12-08-2013 19:31:31
50.127.250.73



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 Re: oil question on power majors in reply to tiresntracks, 12-08-2013 09:53:28  
The correct oil should always be a 90w mineral oil. If you are operating in a colder climate you could also blend it with trans/hydraulic oil, I should think a 50/50 blend would work nicely. Before the advent of the multi weight oil we cut the 90w with diesel oil to make it more viscous with no ill effects.

Cheers, Graham



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tiresntracks

12-08-2013 19:50:06
76.220.192.162



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 Re: oil question on power majors in reply to Graham Barrington, 12-08-2013 19:31:31  
Wrong! If you have a copy of the original owners manual, take a look at it.



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Graham Barrington

12-09-2013 08:33:30
50.127.250.73



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 Re: oil question on power majors in reply to tiresntracks, 12-08-2013 19:50:06  
Sir, My predecessors wrote the manual you are referring to, you see I was employed by Ford UK as a engineer from 1959-1978. The manual does state that a 20w-30 is suitable but please remember that Ford had adopted the 90W standard as suitable for all models.

Service letter July 1959 states: Gearbox, Rear Axle and Hydraulics oil specifications have changed. Now all models from 1952 onwards use: S.A.E 30HD or S.A.E. 20W/30W in all the above at all temperatures.

Oil Capacities.

Gearbox .. 4.5 imp.gal .. 20.43 lt Less PTO .. 4.25 imp.gal .. 19.32 lt

Rear axle .. 9 imp.gal .. 40.91 lt

I prefer to use the pre 1959 oil specification of 90w in my Major collection, but you may chose to use the later alternative.

Respectfully, Graham Barrington, Stamford England

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tiresntracks

12-28-2013 23:58:31
75.44.216.78



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 Re: oil question on power majors in reply to Graham Barrington, 12-09-2013 08:33:30  
Its been a while since I looked at this forum. I didn't know that there were any more responses. Thanks for posting that service letter. That's exactly what I was referring to.



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Bear Creek Majors

12-09-2013 10:43:24
97.91.76.18



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 Re: oil question on power majors in reply to Graham Barrington, 12-09-2013 08:33:30  
You Tha Man Graham!!!!

Quoting Removed, click Modern View to see



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Oliver Doc

12-06-2013 16:10:14
50.127.250.73



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 Re: oil question on power majors in reply to brycestrom, 12-06-2013 08:54:06  
I use 80-90 in all my Majors. We have always used heavy oil, even in our cold Wisconsin winters. 3 of them we bought new in the late 50's and have never had any troubles.



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Oliver Doc

12-07-2013 17:23:44
50.127.250.73



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 Re: oil question on power majors in reply to Oliver Doc, 12-06-2013 16:10:14  
Im sorry, we do not use 80W-90 its just 90W. It must be GL-1 spec to be yellow metal safe. I buy it from Napa, the part # is 65-205 and will run about $25.00 for a 5 gal pail. I have heard that it can be had at Wal-Mart to for a little cheaper.



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W R

12-07-2013 00:03:45
112.213.157.110



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 Re: oil question on power majors in reply to Oliver Doc, 12-06-2013 16:10:14  
Had a Power Major from 1959 until 1999 and always used 90 gear oil in the gearbox & diff there were
no problems. Have been informed that modern gear oils are not
suitable for Fordson GB/Diffs due to additives causing corrosion of the bronze bushes etc.



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