Dorsey , to answer your question the 105k service consists of changing oil and filter , spark plugs and a basic check over. Your next major service is due at 120k miles . Easy way to remember is at 3k miles you change your oil and filter. Every 15k miles you change your oil and filter and replace spark plugs. Every 30k miles you flush the brake fluid and coolant , replace air filter , fuel filter and spark plugs. Service transmission . Replace rear differental gear oil, rotate and balance tires . Also have your mixture and timing checked and adjusted. this si about a 500.00 service if brought to a shop. You might be able to do some yourself. Hope I could help.