The idea is great but it constantly forgets data even though there is an iCloud backup. Worked initially for quite some time but all my months of logs have been lost. Emailed support never heard back.
Update: March 21, 2015
Still no response from support sent several months ago. All data lost. Unfortunately this is the only app that had a comprehensive list of maintenance items that I have found. Still not using it do to losing data multiple times. Good old fashioned paper and pencil work best.
ntooch about RememberTheOil - Car Maintenance