Right my dad's Passat 1.9 TDi is poorley, well the oil aint been changed since the stone age - Its performing very sluggish and dont like going over 3800 RPM and has no pull in her.
The oil is like sludge and i know that aint helping. So im going to drop the oil and change the filter as its due for a nice service. But with the oil being like quaker oats im presuming an engine flush would do it some good... So what do you need to do it yourself? Im trying not to take it to a garage as im not letting dad pay for something i know i can do with ease.
Any advice appreciated