Selecting the correct oil for a turbocharged engine can have a major impact on its performance and durability. Firstly, consult the owner's manual or the oil cap for the recommended oil viscosity and grade, such as 5W-30 or 10W-40. The lower the number before the W, the better it flows when cold, while the higher number after the W indicates better protection when hot. Secondly, check for oil certification marks on the label, such as API, ACEA, or ILSAC, which guarantee that it meets certain quality and performance standards. Additionally, you can look for specific approvals from engine or turbocharger manufacturers, such as VW, Ford, or Garrett. Thirdly, compare features and benefits of different brands and types of oil, like synthetic, semi-synthetic, or conventional. Synthetic oils tend to be more expensive but offer better performance and protection than conventional oils. Lastly, consider your driving conditions and habits to determine which oil properties and change intervals are best suited for your needs. For instance, if you drive in extreme temperatures or in stop-and-go traffic you may need an oil that can handle these conditions and prevent sludge formation. Ultimately, by following these tips you can lubricate your turbocharged engine effectively and reap its rewards for a long time.