CREATE TABLE table_name_34 (driver VARCHAR(255), time_retired VARCHAR(255), grid VARCHAR(255), constructor VARCHAR(255), laps VARCHAR(255))
Who drove the maserati under 18 laps with an oil leak that had a grid of under 14?
    
SQL: SELECT driver FROM table_name_34 WHERE constructor = "maserati" AND laps < 18 AND grid < 14 AND time_retired = "oil leak"