Hmm well I have just checked mine which is a '93 supplied Vx and my dipstick just has two markings.
Lower marking - 23mm
Higher marking - 37mm
I know that if I overfill the car (ie above the top marker) it will chuck the oil out through the exhaust which makes for entertaining times! ...and like others, I let it find it's own level sometimes. Normally I fill half way, or just a bit higher than, between the markers, it seems happiest there.
Dave
Edit to say -
having re-read my markers are the same as ric's though mine doesn't have a cross hatched lower section and at least me and ric seem to concur.
I never thought the top mark was a CC mod though, most acrs I have owned, if not all, have a min and max marker.
Edited by - Lotus Boy on 1 Nov 2007 20:32:00