Oil and filter change
Oil low light is on
Bulb malfunction is on
Coolant leak under the vehicle

Diagnosis/ Work done:
Performed oil and filter change.
Tested and replaced oil level sender unit.
Tested and replaced left brake light bulb.
Tested and replaced radiator, both lower and upper hoses with auxiliary fan switch expansion tank and cap.
Evacuated and recharged a/c system with dye.