When you open the starboard cowling, the dipstick will be the most prominent thing in front of you. A 1.5 inch wide tube with a screw cap. Undo the cap & hopefully, 1 dipstick.
Take some kitchen tissues & you could then wipe the dipstick to get a good look at the difference on the dipstick between the 6 & 8 marks.
And don't put it back on too tight. The next pilot wont thank you for it!
As mentioned above, get someone familiar with the plane to show you everything, not just the engine, all the hinges, clips, pull rods....
BtB