Farmtrac 665 DTC

   / Farmtrac 665 DTC
  • Thread Starter
#11  
Yeah, thanks for the reply. Wish you had seen this post earlier. It took me quite a long time to figure that out. I was very apprehensive about what oil went in which place. I got an owner's manual but it was still hard to be certain about some things as the photos didn't look like on the tractor. If the photos would have covered a larger area for perspective would have been much better. Such as where to put motor oil in. It looked more like a place to put steering fluid in or lubrication for the injectors. So when I changed the oil I removed the breather off the valve cover and dumped the oil in there. At least I knew it would get to the crankcase. It still doesn't look like a place to install motor oil as it has a screen under the cap, but that is what it is. I haven't put any oil in it yet as the oil level has been okay since the oil change.

By the way, do you happen to have a loader that the hydraulics for the front-end loader is connected to the rear remotes? For some reason to get the controls on the loader to work, I have to connect the hoses to the two and four ports, instead of the one and two ports. I have dual remotes. Where the one and three ports are on top and the two and four are the bottom ports. As it is connected I am connected to different remotes. The hoses should be connect to just one remote. Either to the one and two ports on the first remote or to the three and four ports on the second remote. It has me baffled, but as usual, there is some reason beyond my comprehension.
 
   / Farmtrac 665 DTC #12  
Sorry, I don't get on the forum much.

No, I don't have a loader on mine. I actually have never used my auxiliary rear remotes with any attachment. Do you have the double acting joystick behind the seat? I assume you do since you have 4 ports. I think the two upper ports are together and the bottom two ports are together, but that's about all I know.
 
   / Farmtrac 665 DTC #13  
before u reply i have all the manuals from the dealer and brochure papers from the day we got are o6 665dtc. known the dealer all my life. Do not put any 80-90 in a farmtrac transmission. they use standard hydrolic fluid in the trans. were using the black premium bucket from tsc. only thing that gets 80-90gear oil is the 4wd front axel and the front hubs. u can pull the screen out were the engine oil is spose to be pored in. curently over 1800 hrs on ares so far. every 2 year fuel tank needs flushed out. plugs with rust and dust. are loader was factory mounted
 
   / Farmtrac 665 DTC #14  
yes the top 2 ports in the outlet go together. same with the bottom set. we put fluid in the back tires and 3 set of wheights. is scary what u can push or lift. 36 bags of 60 pnd bags of concrete. if u put 3 bottom plows on picks up more but u cant tillt the pallet forks.
IMG_20250402_095642.jpg
 
   / Farmtrac 665 DTC #15  
before u reply i have all the manuals from the dealer and brochure papers from the day we got are o6 665dtc. known the dealer all my life. Do not put any 80-90 in a farmtrac transmission. they use standard hydrolic fluid in the trans. were using the black premium bucket from tsc. only thing that gets 80-90gear oil is the 4wd front axel and the front hubs. u can pull the screen out were the engine oil is spose to be pored in. curently over 1800 hrs on ares so far. every 2 year fuel tank needs flushed out. plugs with rust and dust. are loader was factory mounted
I would be interested in seeing the snippet from the manual. You'd know better than me. I don't have an OM.

But I do have the service manual and for the ft-70 it recommends 80W90 for the transmission/steering.
For what it's worth, I've been using the heavier oil in mine for 15 years with no issues.
 
   / Farmtrac 665 DTC
  • Thread Starter
#16  
I have a Farmtrac 665 DTC 4x4 I use 80w90. Here is what I found on the net. I also have a manual that specifies 80x90. As soon as I find my manual, I will send you a PDF copy.


For a Farmtrac 665 DTC, you'll need to consider engine oil, transmission/hydraulic oil, and potentially other fluids. Engine oil should be 15W-40 or 10W-30. For the transmission and hydraulic system, use a multi-purpose 80w/90 GL4 or GL5 limited slip oil, or a UTTO tractor transmission fluid. Additionally, you may need a specific tractor transmission fluid, or a universal trans-hydraulic fluid meeting the tractor manufacturer's specifications.

Here's a more detailed breakdown:

1. Engine Oil:
  • Recommended Viscosity: 15W-40 or 10W-30.

  • Considerations: Multigrade oils (like 15W-40) are designed to perform across a range of temperatures.
2. Transmission/Hydraulic Oil:
  • UTTO Tractor Transmission Fluid: Viscosity 147, for hydro/trans.

  • Multi-Purpose Oil: 80w/90 GL4 or GL5 (limited slip).

  • Considerations: Tractor transmission fluid lubricates moving parts and hydraulic oil transfers power. Ensure the chosen fluid meets your tractor's specific requirements.

  • Universal Trans-Hydraulic Fluid: A good option if it meets the Farmtrac 665 DTC's specifications, according to Blain's Farm & Fleet.
3. Other Fluids:
 

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