# 1971 Castrol Trophy

The 1971 Castrol Trophy was an endurance race for Group E Series Production Touring Cars. The event, which was staged at the Warwick Farm circuit in New South Wales, Australia on 2 May 1971, was Round 2 of the 1971 Australian Manufacturers' Championship.

## Classes

As the race was an Australian Manufacturers’ Championship round, the field was divided into five classes, based on “CP Units”. The engine capacity, in litres, was multiplied by the retail price, in Australian Dollars, to arrive at a CP Unit value for each competing model.
* Class A : 0 to 3000 CP Units
* Class B : 3001 - 4600 CP Units
* Class C : 4601 - 9000 CP Units
* Class D : 9001 - 18000 CP Units
* Class E : Over 18000 CP Units

## Results

| Position | Drivers | No. | Car | Entrant | Laps |
| 1 | Colin Bond | 22 | Holden LC Torana GTR XU-1 | Holden Dealer Team | 100 |
| 2 | Peter Brock | 23 | Holden LC Torana GTR XU-1 | Holden Dealer Team | 100 |
| 3 | Allan Moffat | | Ford XW Falcon GT-HO | Ford Motor Company | 98 |
| 4 | Don Smith | | Holden LC Torana GTR XU-1 | WH Motors | 98 |
| 5 | Barry Seton | | Ford Escort Twin Cam | Barry Seton | 96 |
| 6 | Bill Evans | | Ford Escort Twin Cam | Bill Evans | 96 |
| | Class A | | | | |
| 1 | Doug Whiteford | | Datsun 1200 | Datsun Racing Team | 90 |
| 2 | Jim Laing-Peach | | Mazda 1300 | Mazda House | 90 |
| | Class B | | | | |
| 1 | Lakis Manticas | | Morris Cooper S | British Leyland Team | 94 |
| 2 | Bruce Stewart | | Datsun 1600 SSS | WH Motors | 93 |
| DNF | Paul Gulson | | Morris Cooper S | Marque Motors | |
| DNF | Bill Stanley | | Morris Cooper S | Marque Motors | |
| DISQ | Les Grose | | Morris Cooper S | | |
| | Class C | | | | |
| 1 | Barry Seton | | Ford Escort Twin Cam | Barry Seton | 96 |
| 2 | Bill Evans | | Ford Escort Twin Cam | Bill Evans | 96 |
| 3 | George Giesberts, Scott Townsend | | Ford Escort Twin Cam | Smith Ford | 95 |
| ? | Bob Forbes | | Fiat 124 Coupé | | |
| ? | Jim Murcott | | Ford Escort Twin Cam | | |
| ? | Bruce Allison | | ? | | |
| ? | John Piper | | Ford Escort Twin Cam | | |
| DNF | Warren Gracie | | Holden LC Torana GTR | | |
| | Class D | | | | |
| 1 | Colin Bond | 22 | Holden LC Torana GTR XU-1 | Holden Dealer Team | 100 |
| 2 | Peter Brock | 23 | Holden LC Torana GTR XU-1 | Holden Dealer Team | 100 |
| 3 | Don Smith | | Holden LC Torana GTR XU-1 | WH Motors | 98 |
| 4 | Bob Morris | 31 | Holden LC Torana GTR XU-1 | Mark IV Car Air Conditioning | |
| 5 | Norm Beechey | 32 | Chrysler VG Valiant Pacer | | |
| DNF | Doug Chivas | | Chrysler VG Valiant Pacer | | 83 |
| DNF | Don Holland | | Holden LC Torana GTR XU-1 | | |
| DNF | Geoff Hunter | | Chrysler VG Valiant Pacer | 26 | |
| | Class E | | | | |
| 1 | Allan Moffat | | Ford XW Falcon GT-HO | Ford Motor Company | 99 |
| 2 | Barry Sharp | 38 | Ford XY Falcon GT | Brabham Ford | 94 |
| 3 | Bruce McPhee | 42 | Holden HT Monaro GTS 350 | Bardahl International Oil Corp | 94 |
| 4 | John French | | Ford XW Falcon GT-HO | Ford Motor Company | 90 |
| DNF | Murray Carter | | Ford XW Falcon GT-HO | Bob Rollington | |
The winner's race time for the 100 lap, 225 mile race was 3 hours 6 minutes 29.5 seconds.
From the 30 entries for the race, 28 cars started, with seven failing to finish.