Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Year | Entrant | Chassis | Engine | Points |
| --- | --- | --- | --- | --- |
| 1950.0 | Blue Crown Spark Plug / Moore | Kurtis Kraft 2000 | Offenhauser L4 | 1.0 |
| 1951.0 | oil Mobil / Rotary Engineering | Deidt Tuffanelli Derrico | Offenhauser L4 | 0.0 |
| 1952.0 | Blue Crown Spark Plug / Earl Slick | Deidt Tuffanelli Derrico | Offenhauser L4 | 0.0 |
| 1953.0 | J.C. Agajanian | Kuzma | Offenhauser L4 | 0.0 |
| 1954.0 | Automobile Shippers / Casaroll | Kurtis Kraft 4000 | Offenhauser L4 | 0.0 |
| 1955.0 | H.A. Chapman | Kurtis Kraft 500C | Offenhauser L4 | 3.0 |
| 1956.0 | Belanger Motors | Kurtis Kraft 500C | Offenhauser L4 | 0.0 |
| 1957.0 | Novi Racing | Kurtis Kraft 500F | Novi V8 | 0.0 |
| 1958.0 | Jones & Maley Cars | Epperly Indy Roadster | Offenhauser L4 | 4.0 |
| 1959.0 | Hoover Motor Express | Epperly Indy Roadster | Offenhauser L4 | 3.0 |
| 1960.0 | Lindsey Hopkins | Watson Indy Roadster | Offenhauser L4 | 0.0 |
Question:
What was the engine of the Hoover Motor Express after 1955 with greater than 0 points?
Answer:
Offenhauser L4