How much hydraulic fluid in a 1991 tractor?

The hydraulic fluid capacity of a 1991 tractor can vary depending on the make and model of the tractor. However, some general guidelines are as follows:

- Small garden tractors typically have a hydraulic fluid capacity of around 4 to 6 gallons.

- Compact utility tractors may have a capacity of around 10 to 15 gallons.

- Larger utility tractors can have a capacity of 20 gallons or more.

It is always best to refer to the owner's manual for the specific tractor for the exact hydraulic fluid capacity.