hi all, i have looked at other threads regarding this issue and seem to have a mixed opinion. i had my tyres balanced the other day (front) and when i got home after about 5 miles i noticed that i had quite a bit of smelly oil around 1 of the front wheels. on closer inspection i have noticed the cap is not in the best of conditions. what i want to know, is this normal are these caps keeping the diff oil in or is there a seal elswhere gone???????? i would be very gratefull for any advice. cheers, carl.