TO35 Oil quantity and type locations...

Hey guys I need some help. I usually only work on old two cylinders and have the books for my tractors. My dad has a T.O. 35 he bought last year and uses to mow his yard and blade his driveway. Long story short he asked me to change the oil in it today and I drained it and put a new filter in it. How many quarts and what oil do you run in these? Also in the process I checked the dipstick on the rear end and it was way too full and looked as if it has got water in it. So I pulled the plug and drained it, I also noticed another plug in front of it under where the dash would be and a large diameter cap. I pulled that cap and oil looked the same so I pulled the plug and drained it. I left plugs out and told him to let drain for a couple days and put some diesel or kerosene in it to clean out and let it drain for a couple days. My main questions are #1 What type oil should go in the fill hole below the dash and how much? #2 Where do you fill the oil for the hydraulics and what type should we use? I saw a cap that looks like where it should be filled however it seems awful small for a fill hole. I have attached a pic of the tractor... Thanks in advance for all the help...
 
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I use shell rotella 15w40 in the motor, with filter change is 5 qts. This oil still has the zinc in it, as oils did in 1957. (Be sure the spring is still in the oil filter cansister), many have fallen out over the years and your filter will not filter the oil properly without the spring to hold the filter aganist the motor block.

your picture shows the proper trans/differential oil sump fill hole.

It should take around 8 gals of oil, i think most put in 6 gals and let it balance out in the sumps then slowly add to full.

my tractor TO-35 will lose some oil out of the weep hole in the bottom of the transmission housing, so i only fill my rear sump to the mid level point on the dip stick with the lift arms in the down position, Plenty of oil for full operation and tractor will not leak oil.

I use GL-1 oil in the rear sumps. others may use a 30 weight oil, but the manual calls for Gl-1 oil, this oil protects the bronze or (yellow metal) bearings in the transmission. present day 30 weight oil may not have the proper lube abilitys to protect your yellow metal, new tractors do not still have yellow metal bearings in trans today.

oils may be better today than they were in 1957, but i have always used GL-1 oil and my transmission/lift system still works fine after 55 years.

If you did put kerosene in that rear sump???? i would add a gal or two of gl-1 run the tractor around some (do not use the lift) then let that oil solution drain out another day. Kerosene will clean stuff out of places you may not want cleaned out and you may have some leaks you did not have before, I would have just ran some gl-1 in the trans sump then let it drain out.

I guess i am just concerned about ruining a good working system as i ruined a good old ford car motor once cleaning it out with kerosene. it ran great before the cleaning then smoked like an old freight train after the cleaning.
 
The oil you use in the filler Plug is for the transmission and the hydraulics and it takes 24 quarts of Multi-grade 10W/30 this is much better for cold weather, it is OK for summer as well. Whatever you do NEVER use Diesel or kerosene in the housing as you can't fully drain it out. Ferguson makes a point of saying this in the Service Manual. Any diesel or kero left in there will immediately dilute the new oil. The oil should be changed every 12 months. Replace the rubber boots at the bottom of the Gear Levers as this is the usual place for water to enter. When you pour oil into the Transmission, only pour 2 gallons at a time and then leave it for 15 mins to level out before you add the next lot. This is to prevent the oil level getting too high in the transmission and running through the oil seal into the Clutch Housing and getting onto the Clutch and the Starter. The small "Cap" that you saw is a breather. If you need more written info about all this, email me direct at the address below, tell me what you need and I will send it...John(UK)[email protected]
 
You are correct Phil, another senior moment I am afraid. I had just answered the same question on 3 TO20/30's and that figure stuck in my brain (such as it is)
Actually it is a good idea not to fully fill these transmissions now, this will prevent them leaking unnecessarily and as the tractors don't work full time now, it isn't that critical but never the less the figure was recommended to be 32 quarts.. I tell them now to only fill until the oil runs out of the bottom hole on the round side cover and leave it at that, only if it is working hard or on a lot of sloping ground does it need filling fully, there is more than enough oil for normal use. .John(UK)[email protected]
 

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