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Best to use Simplicity Multi-purpose Hydro Oil, part #1685516. Not much more in price than an alternate, and get the proper weight and additives.
If you mean transmission oil, you don't add any. The transmission is sealed, it never needs oil.
According to the Simplicity manual for models 7018, 7117, and 7119, hydrostatic transmission and tractor hydraulic systems use fluid from gear transmission (reduction gear) case. Dexron automatic transmission fluid (or equivalent) is recommended. Fluid capacity is 3 quarts (2.8L) and should be checked every 25 hrs of operation. Fluid and filter should be changed at 400 hr intervals.
There is normally a plug on the upper side of the transmission under the vehicle. That is where you add oil. Add oil until it runs out. It is then full.
On manual transmission until oil flows out of full level hole. on most manual transmission the refill hole is the oil level. On automatic transmission if no oil shows on dipstick add a quart at a time.
You shouldn't have to.
To add tranny fluid, you remove thr transmission oil dip stick, and use your newly bought transmission oil funnel which will fit into the transmission oil dipstick tube and add oil, little at a time is best, dont over fill, if the oil shows on the stick at the add line, checking it hot and in park running, you probably only need about a half a quart.
John Deere recommends that you put Low Viscosity Hy-Gard or Hy-Gard Transmission oil in their Hydro or Gear Transmissions. The Low-Vis is used for factory fill in the Hydro and Hy-Gard in the Gear Transmission.
You add fluid the same place you check the fluid level.
Add automatic transmission fluid through the dip stick tube. No kidding!
What type oil does John Deere 185 (1988 year model) hydro transmission use? I got 3 different answers from JD dealers. Thanks Jim
Remove the clutch cover or the primary chain inspection cover and add the transmission oil there.