Maintain a regular maintenance routine. Keep to manufacturers guidance for oil change frequency and grade. Harsh driving and/or environment conditions may require more frequent oil changes. Replace the oil filter with a high grade filter each service. Turbo’s are also particularly affected by oil level. Avoid going beyond high and low oil levels on the dipstick. Check the oil feed and drain lines to and from the turbo. Pressure testing is recommended as visual inspections will not reveal what’s going on inside the lines. Air filters, which also affect turbo performance, may need changing more often in certain conditions (dusty for example). And, remember to warm your engine up and cool it down. Turning the engine off hot will cause deposits to build up and shorten the life of your turbo.