I want to simplify the rat's nest of hoses under the bonnet and not feed oil laden air back into the inlet.
I've read the sticky - it recommends one with 19mm outlet and inlet. Most seem to be 15mm. Will a 15mm work ok ?
I'm considering VW GOLF GTI TDI VR6 SILVER SQUARE OIL CATCH TANK 9MM & 15MM FITTINGS INCLUDED | eBay
for my S3.