McDonald's Frying Oil Secrets Exposed: How Often Does the Chain Really Change Its Oil?

McDonald's employees reveal that the fast-food chain doesn't have a strict policy for changing its frying oil. According to their website, McDonald's filters its oil daily and changes it at 'regular intervals,' but what this really means is unclear.

Some former employees claim their locations swap out oil once a week, while others report not changing it in four months. The issue isn't just that the oil is old, but also that when left for too long, it becomes disgusting and unhygienic, with a 'brown foam' forming on top of the fryer baskets.

The oil used for fries has a more decent rotation schedule than chicken and fish oils, which are often left to sit for longer periods. This is because the fry oil is changed more frequently due to its high usage rate. However, there are no national laws governing how often oil should be changed, leaving it up to individual restaurant managers.

The lack of a strict policy means that if people aren't ordering a lot of chicken or fish items, the oil may sit for months, affecting the quality and safety of the food being served.