A synthetic oil filter is a filter that is made using synthetic materials. When combined with synthetic oil, these types of filters are better at filtering small contaminants and will last longer, which should translate to fewer visits to the mechanic over the course of your vehicle’s life.
Synthetic oils are proven to be more resistant to extreme temperatures and to help the engine run smoother. However, they are more expensive than common motor oils.
If you choose to use a synthetic oil lubricant for your engine, keep in mind that you don’t necessarily need to couple it with a synthetic oil filter. Any good quality automotive filter with maximum mile protection and high efficiency will do the job perfectly.