Can you use mustard oil lamp in hanuman ji pooja?

Yes. You can use mustard oil lamp in Hanuman Ji pooja.

Hanuman Chalisa is a Hindu devotional hymn dedicated to Lord Hanuman, a Hindu deity, and an ardent devotee of Lord Rama. It was composed by the 16th-century poet and saint Tulsidas. The Chalis consists of 40 verses, hence the name Chalisa.

Hanuman is usually shown smeared in red Sindoor (vermillion) and oil.

Mustard oil is known as sarson ka tel in Hindi, and it is often used in religious rituals and ceremonies, including the worship of Lord Hanuman.

However, it is important to note that the specific items and rituals used in worship may vary depending on regional customs, traditions, and the preferences of the individual devotee.