Bobcat 773 Engine Oil Capacity: What You Need to Know
The Short Answer
The source material for this article does not include a documented engine oil capacity for the Bobcat 773, so no specific quart or litre figure is given here. Quoting a number without a verified source could lead to underfilling or overfilling the engine. Treat the operation and maintenance manual for your machine, matched to its serial number, as the authoritative reference.
Why One Number May Not Fit Every 773
The Bobcat 773 is a skid-steer loader that was built over a long production span. Machines with the same model name can differ in engine and specification depending on production range and market, and the oil capacity follows the engine fitted to your unit. A figure that is correct for one serial number range may not apply to another. The supplied evidence does not document which engines were used or where any changes occurred, so this article cannot narrow it down further.
Published capacities are also often stated in two ways: with a filter change and without one. A new, empty filter holds some oil, so the refill amount after a full service is usually higher than the amount needed when only the oil is drained. Check which condition a published figure refers to before you use it.
How to Confirm the Capacity for Your Machine
Find the serial number plate on the loader and note the full serial number. Use the operation and maintenance manual that matches that serial number range, either the copy supplied with the machine or one from a Bobcat dealer. Look in the manual's specifications or capacities section for the engine oil figure, and note whether it includes a filter change. Ask a Bobcat dealer's parts or service department to confirm the capacity and oil specification for that serial number if the manual is missing or unclear.
Use the Dipstick as the Final Check
Treat any published capacity as an approximate refill amount, not as something to pour in blindly. Some old oil usually stays in the engine after draining, so the amount needed can differ from the listed figure. A practical approach is to add somewhat less than the listed amount, run the engine briefly if the manual tells you to, shut it down, and let the oil drain back into the sump. With the machine on level ground, check the dipstick and top up gradually until the level sits within the marked range. Overfilling can be as harmful as running the engine low.
Oil Grade and Specification
The supplied evidence also does not specify the required oil viscosity or service classification for the 773. These requirements can depend on the engine fitted and on the temperatures the machine works in. Get the grade from the same serial-matched manual or dealer source you use for the capacity.
Gaps in the Available Information
This guide could not confirm the following from the supplied material: the engine oil capacity in quarts or litres, whether that figure includes a filter, which engines were fitted across 773 production, and the recommended oil grade. Until you have confirmed these against your machine's serial number, rely on the manual and the dipstick rather than a general figure.
