I keep all receipts for all fluids and filter purchases, brake pads, practically all maintenace/repair items for our cars and lawnmowers. These folders are getting really thick: 95 Altima--245K.....01 Accord--155K.....99 Protege--60K.....95 4cycle Lawnboy Medallion (Green Toro).
I just can't make myself purge these files. Oh well, it's better than having an oil stashing habit!!! LOL