My advice is to keep it as simple as possible,with only one set of services recommended at a mileage interval. Bottom line sell - quote one price - if the customer has questions, then you can bring up other options - from another sheet. If you get too complicated with too many choices customers will go brain dead in front of you and opt for nothing. focus on factory recommended services, local area recommendations, and owner responsibility as listed in the owner manual. These can be defended easily if there are questions about why they are necessary.
I advise to have sheets printed and have an area for the customer to sign either accepting or rejecting the recommended service. This sheet should be filed with the R.O. to support your recommendations in the event there is a failure and the customer tries to blame you for not keeping him informed (corroded cooling system/waterpump failure).
John
pika68@aol.com