Mineral oil is much more viscous than water. Using a gravity flow enema set usually fails miserably even when the mineral oil is warmed to body temperature. You can use a bulb syringe, but cleaning the oil from the syringe is difficult, if not impossible. The prepackaged-prefilled disposable plastic syringe units (Fleet, Medline, Care etc) mitigate the need for cleaning later. Trying to fill a typical bulb syringe or enema bag with mineral oil is an invitation to destructive spillage.
When administering the enema use the left lateral position. That is where you lay down on a flat surface (bed) on your left side with the left leg straight and the right leg drawn towards your stomach. The supine, knee chest position or standing bent over, do not work well. Trust me on this. You want minimal body movement after administering mineral oil. Use an underpad large enough to allow you to sit up and move from the bed without your cheeks contacting the linen.
Mineral oil enemas are retention enemas. The nominal retention time is 15 to 90 minutes. If used for impaction relief, a frequent cue it has achieved the goal is, you will feel brief activity like an internal shift in the lower abdomen aka suprapubic region. That is an indicator the stool clumps have separated.
I suggest using a bedside commode as the walk from the bed to a bathroom can be quite messy. Having the mineral oil run down your leg(s) or sputtering as you walk is more than you wish to experience. If you opt to walk from the bed to the toilet, then lay disposable pads on the floor between the bed and the toilet. It is a lot easier to pick up soiled pads then it is to remove oil from the carpet or clean tile and grout.
For 24 to 48 hours post evacuation, you will want to use pads or disposable briefs to collect the inevitable oil leakage. While some may recommend using tapwater or soapsuds enemas to clear the oil, past experience indicates it only minimizes the frequency and amount of oil leakage.