A while ago, I noted that my power steering fluid was dissapearing, at a rate of nearly a litre a week...
I have looked at all the hoses etc for signs of leakage, but can't see anything obvious. The side of the reservoir is pretty dirty, so I was thinking the seal in the lid could maybe do with replacing, but more worrying, is that I have noticed a drippage of fluid from the rear of the car.
I know my car has self levelling rear suspension, but I don't really know what that means, but surely the power steering fluid must travel to the rear of the car...?

Could this drippage be the leak I have been lookng for? Any info greatfully received!

BTW, the drippage is coming from the middle of the car, towards the rear, near the diff, but I haven't been able to get under the car for a proper look.