Sludge is a car engine’s worst nightmare. The accumulation of heat and moisture causes the oil to gel, leading to Trouble—with a capital “T”. Oil sludge in turbocharged engines is especially common. If you’re a VW or Audi owner, you may want to take notice.
What’s Going On?
Volkswagen manufactured a 1.8-liter turbocharged engine for the VW Passat from 1997 to 2005. While such engines are renowned for their exceptional performance, they also became hot really fast. Due to the relatively low 3.7-quart oil capacity, the engine bay can quickly overheat. This is especially the case if you frequently commute for short distances or are late on an oil change. Along with VWs from the above years, the Audi A4 from years 1998-2004 have the same turbocharged engine as well. Continue Reading →