Having an issue with my Astra G its a 1.6 8v. It has been losing its dot 4 oil. Due to other problems there had been a new gearbox and clutch put in 600 miles ago and is still losing dot 4 oil. i know the oil is for the brake system and the clutch but when the oil gets low i only ever seem to loose the clutch the brakes have always worked fine. I've had a good look round the car and cant see anything obvious I'm no car expert but know a bit. Any ideas where the dot 4 could be going.