Page 33 of the Plus Four 2025 handbook (found here:
https://morgan-motor.com/wp-content/uploads/Plus-Four-Handbook-V1.1-MY25-Web.pdf) which is titled "DRIVER INFORMATION PANEL Oil Level Readings" shows that an oil reading of 4/4 (green coloured oil can and engine bay symbols) indicates "4/4: Engine oil is full." The handbook also indicates the volume of oil that would need to be added if the reading shows the oil level is low, 3/4, 2/4, 1/4 etc. with amber or red coloured engine bay symbol. Addition of more oil when the test indicates a 4/4 status would eventually lead to "!" red symbol and "OVERFILL: Engine oil has been overfilled. Do not drive." Not to a 5/4 status. Whoever told you it should be 5/4 needs to be corrected. Your readings indicate that the dealer has refilled with the correct volume during the oil-change.
