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The dipstick is rather long on the Rubicons. Pull it out and notice near the top the dipstick is flat and wide. You will see two lines on the flat part. The oil should be between the two lines.
Remember, this is a dry sump motor and you need to idle the machine for 5 minutes w/out touching the throttle. Shut it off, wait about 2 minutes, pull out the dipstick, wipe it off, put it back in w/out screwing it in and remove to check the level.