FIG. 1 is a front perspective view for a “infrared oil heater” showing my new design, FIG. 2 is a front view thereof, FIG. 3 is a rear view thereof, FIG. 4 is a left-side view thereof, FIG. 5 is a right-side view thereof, FIG. 6 is a top view thereof; and, FIG. 7 is a bottom view thereof.