The manufacturer usually specifies the type of oil you need to put in your Volkswagen. Your vehicle may require synthetic oil, or you may have the option to choose between conventional and synthetic. Conventional oil is crude oil, whereas synthetic oil consists of artificially crafted chemical compounds. When deciding whether to use conventional or synthetic oil, you'll need to consider your budget as well as your car's engine and the time you want to take between oil changes.
Synthetic oil contains chemicals that can help your motor to withstand more heat and produce better overall efficiency. Furthermore, synthetic oil compounds allow it to hold up longer without breaking down. Synthetic oil may be the better choice if you want to go longer between oil changes. Conventional oil is the more cost-efficient choice, but you'll need to get more frequent service.