rich 20 mine is the same .But after 31 years and no one but me as ever cleaned it,,, it had signs oil leak on the cover bottom . I only noticed it when i went to change the gear oil . So i sprayed it with carb cleaner and wiped it all off . By the way if you go to change the final drive oil undo the filler plug first .Reason is it might be stuck solid and after draining off you will be unable to re fill it with oil. Have a good time in Germany .. ho and if your are going it will give you time to check the oil before you go,, dont want it to go down on you over there do you . You dont know how long its been leaking out might only be a egg cup full in there .