If you are only topping up in between services,say less than half a ltr in a year using 502 this surely would not be enough to dilute or effect the other 4.5 ltrs of oil in the engine ?
![undecided :undecided:](https://www.golfgtiforum.co.uk/Smileys/modern/undecided.gif.pagespeed.ce.pzpJrE4p4e.gif)
, i still can`t get my head around the vw golf gti owners handboook saying to use 502 on non longlife service and this being incorrect
![undecided :undecided:](https://www.golfgtiforum.co.uk/Smileys/modern/undecided.gif.pagespeed.ce.pzpJrE4p4e.gif)
Can anyone say what standard oil all gti mk6`s are filled with when they leave the production line and if it was 502 can you top it up with 504