Riding High - 1937 is rated/received certificates of: UK:U
Kiffer's High Finance - 1919 is rated/received certificates of: UK:U
High Stakes Backgammon - 2005 is rated/received certificates of: UK:Approved
The High Crusade - 1994 is rated/received certificates of: Germany:6 UK:15
High Stakes - 1997 TV is rated/received certificates of: Australia:M
High Octane Detonate - 2005 V is rated/received certificates of: Australia:M
High Octane 2 - 2001 I V is rated/received certificates of: New Zealand:M
High Octane 3 - 2002 V is rated/received certificates of: New Zealand:M
High Octane Overboost - 2004 V is rated/received certificates of: New Zealand:PG
CSI Miami - 2002 High Octane 5-7 is rated/received certificates of: USA:TV-14
Mile High - 2003 is rated/received certificates of: Australia:MA Finland:K-15
Sky High - 2003 is rated/received certificates of: Germany:16 Singapore:PG UK:15 USA:R
Knee High P-I- - 2003 TV is rated/received certificates of: USA:TV-14
Crimson Skies High Road to Revenge - 2003 VG is rated/received certificates of: USA:T
Jungle Beat - 2003 Because I Got High 1-4 is rated/received certificates of: South Africa:PG
Las Vegas - 2003 The High Price of Gas 5-10 is rated/received certificates of: Argentina:13
The grades gasoline are the different octane ratings, the cheapest gas has the least octane. The lower the octane in the gasoline, the faster it will burn. High performance cars need high octane fuel.