You naughty naughty naughty people
Its a tribute to Bongo longevity though.
Treat yourselves with all that oil money you've saved and get a Pela pump to do oil changes. Makes it much much easier and therefore much much more likely you won't be naughty again. Make sure you change the filter though.
This thread should be deleted in case The Bongomeister gets a Freedom of Information request.
73k miles - the mind boggles. What WERE you thinking.
Don't mind me - just being mischievous
PS - have you checked the brake linings, changed coolant, cambelt etc. in all that time. You should do if you haven't or one day the Bongo may bite you!