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What is the correct oil for transmission & steering clutches, D6C 74A

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2 months 1 week ago #259317 by Ricky
 D6C 74A, what is the correct oil for manual transmission and steering clutches and amount to change all fluids.I have read different reviews, SAE 30, SAE 50 ??, tractor hydraulic ??, total of 17.5 gallons??Thank You, Ricky

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2 months 1 week ago #259325 by kittyman1
what do mean by correct Ricky?
-my 99J appreciates fresh oil of any kind...
-my Motto is any Oil is better than NO Oil...
-you can always buy mega dollar oil and grease if you want to..

always dropping GOLD, all you have to do is just pick it UP !
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2 months 1 week ago #259326 by seiscat
The most useful manual is the Operation and Maintenance Instructions (OMI), it will save you time, money and prevent you from making mistakes. 
I found this one on eBay:
www.ebay.com/itm/334465855541
 
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2 months 1 week ago #259327 by neil
Hi Ricky, the oil to use is specified in the Operator's Manual I believe. You can likely find a copy to buy online if you don't already have one, or it may be in the Library here on the forum. In any case, your Cat dealer likely has a suitable oil for you to use.

Cheers,
Neil

Pittsford, NY
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2 months 1 week ago #259328 by 17AFarmer
Put a TO4 30wt transmission oil in it, Cat has a decent price on it, NAPA has it also
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2 months 1 week ago - 2 months 1 week ago #259333 by Ray54
I never had the privilege of owning or operating a D6 C. But they are of the time period Cat was going for run everything on the same oil. I have not read the book for D6 C , but know the recommended oil changed back to thicker oil. So it would not surprise me if you could find operators manuals that don't agree on what oil to use.

 
Last edit: 2 months 1 week ago by Ray54.
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2 months 1 week ago #259334 by greengiant
my book that covers 47J, 69J, 56J, 10K, 24U, 69U sez: above 32 F, 30 for everything except 50 for finals and 10 for hydraulic.
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