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J&S Concrete 
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Joined: 07 Sep 2016
Location: 33598
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 Topic: 745c ATF
Posted: 07 Sep 2016 at 5:36pm |
Ive looked all over and cant find any specs, or any recommendations on what kind fluid goes in the tranny. I have what I believe is a 1977 Fiat Allis 745c. Thanks in advance.
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Eric B
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Joined: 09 Feb 2012
Location: British Columbi
Points: 900
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Posted: 09 Sep 2016 at 12:44am |
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I used 30W engine oil in the tranny in my 745. You maintain better pressures and improved metal to metal protection this way than with ATF ...especially if it has high hours.
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Currently- WD,WC,3WF's,2 D14's B. Previously- I 600,TL745,200,FL9,FR12,H3,816 LBH. Earth has no sorrow that Heaven cannot heal!
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darrel in ND
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Joined: 22 Nov 2009
Location: Hebron, ND
Points: 8602
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Posted: 09 Sep 2016 at 7:36pm |
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On the books recomendation, I had been running the best ATF I could get in my 645 transmission, but it kept getting slower and slower. Finally, I had been hearing a few stories that Alison was now recommending 50-40 engine oil for there transmissions, so I drained the ATF, and put in 15-40, and she ran like a scalded dog. I now have another issue, but that's for another post. Darrel
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Eric B
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Posted: 09 Sep 2016 at 8:49pm |
 darrel in ND wrote:
On the books recomendation, I had been running the best ATF I could get in my 645 transmission, but it kept getting slower and slower. Finally, I had been hearing a few stories that Alison was now recommending 50-40 engine oil for there transmissions, so I drained the ATF, and put in 15-40, and she ran like a scalded dog. I now have another issue, but that's for another post. Darrel |
Did an A-C manual actually recommend ATF??
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Currently- WD,WC,3WF's,2 D14's B. Previously- I 600,TL745,200,FL9,FR12,H3,816 LBH. Earth has no sorrow that Heaven cannot heal!
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darrel in ND
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Joined: 22 Nov 2009
Location: Hebron, ND
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Posted: 10 Sep 2016 at 8:19am |
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Eric, I guess I never seen it myself in the book, but another owner told me that. And I don't know if there is a difference between dexron and ATF, but I think it may have been a top of the line dexron that I used. Darrel
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J&S Concrete
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Posted: 10 Sep 2016 at 11:19am |
Interesting. Thanks for the info. The previous owner ran ATF and Ive had to top it off with 7 gal or so. After I try to find my leak, I might switch to some 30w oil
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Eric B
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Posted: 10 Sep 2016 at 3:55pm |
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Perhaps the greatest feature of any Automatic Transmission Fluid is its detergent quality as well as fluidity (if that's a word) in any temperature but the bigger downfall is the lack of protecting metal to metal. I have a tester for testing metal to metal protection of oils and ATF being Dexron or other is pathetic. Once you see it with your own eyes you don't want it where heavy duty service is required especially in older equipment where we are trying to avoid rebuilding expenses. Some years ago I talked to a guy that bought a brand new A-C TL 20 in the 1960's. The manual called for 10W oil in the transmission. Within the first two years of being new he had a transmission failure. After rebuilding the dealer told him to use 20W motor oil...decades later it was still running trouble free. Personally after having numerous trouble-free Caterpillar machines that called for 30W motor oil in the power shift transmissions I thought "what is good for the goose is good for the gander" and put it in the 745 transmission with good results.
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Currently- WD,WC,3WF's,2 D14's B. Previously- I 600,TL745,200,FL9,FR12,H3,816 LBH. Earth has no sorrow that Heaven cannot heal!
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Mactractor
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Joined: 20 Jun 2011
Location: New Zealand
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Posted: 15 Sep 2016 at 3:07am |
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I`ve heard these critisisms of ATFs before, and have wondered how any equipment manufacturer who recommends ATF could offer any warranty support for their product if the metal to metal anti wear properties of that oil is inferior. ATF has been recommended by numerous automotive equipment makers including Allison and Borg Warner, and they would do extensive testing of oils themselves
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Eric B
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Posted: 15 Sep 2016 at 1:35pm |
Mactractor wrote:
I`ve heard these critisisms of ATFs before, and have wondered how any equipment manufacturer who recommends ATF could offer any warranty support for their product if the metal to metal anti wear properties of that oil is inferior. ATF has been recommended by numerous automotive equipment makers including Allison and Borg Warner, and they would do extensive testing of oils themselves
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That's a very good point...that said I imagine if the manufacturer is satisfied that it passes their criteria it's maybe "case closed" from their point of view. However in our interest in sustaining old iron we discover improved methods be it oil or other I tend to pay attention. I have done business with two brothers that have a steering box rebuilding shop (mostly for big trucks). They do excellent work and have a very good reputation. They expressed to me their frustration with the use of ATF in steering systems due to the low metal to metal protection and said if at least 10w 30 motor oil were to be recommended it would extend steering box durability. Not intending to steal this thread - I better stop here 
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Currently- WD,WC,3WF's,2 D14's B. Previously- I 600,TL745,200,FL9,FR12,H3,816 LBH. Earth has no sorrow that Heaven cannot heal!
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darrel in ND
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Joined: 22 Nov 2009
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Posted: 16 Sep 2016 at 9:51pm |
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I've always kind of wondered what Gleaners mentality was for running red hydraulic oil, but I guess you can't argue with success. I'd have to guess that it's thin consistency probably makes the electo hydraulics function better. It's driven many hydros for thousands of hours I guess. Darrel
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