Do you see any oil leak in the front wheels?. That is probably due to broken seal in swivel pin housing unit. Try wheel hub flange seal kit. One kit is for one side.
Fits:
- Discovery I | '94 - '99
- Defender 90 | '94 - '97
Range Rover Classic: from 93 and on (from axle serial # 49L11364C and #57L5189B)
* serial number is stamped on top of the left hand axle tube