Exmark Original Parts Today, many companies can provide you with parts for your Exmark machine. Unfortunately, there are many pitfalls to using non-original parts. That's why we have a saying: GO ORIGINAL, or run the risk of not going at all. When you need a part for your Exmark, there's only one place to go - right to the source. Exmark designs, engineers, and tests our own superior OEM parts to work in perfect harmony with your machine. OEM Exmark 1 Gallon Hydraulic Oil 116-1218, Hydro Filter 116-0164 Includes: Exmark 1 Gallon Hydro Oil, 2 Hydro FiltersCompatible with: Lazer Z, Lazer Z E-Series, Lazer Z AS, Lazer Z Z-Series, Lazer Z S-Series, Lazer Z X-Series, Next Lazer Z ASX, Next Lazer Z Propane Genuine Exmark Hydro Oil and Filters Ignoring machine maintenance will produce unexpected downtime and costly repairs, which are not only frustrating; they're preventable. The best way to keep your machine running as long as possible is by creating a maintenance schedule, committing to it, and making repairs when needed. It is recommended to change Hydro Oil and Hydro filters after the first 250 hours of operation and every 500 hours after first (may be more often under severe conditions).