1986 Castrol 500

The 1986 Castrol 500 was an endurance race for cars complying with CAMS Touring Car regulations, which were based on FIA Group A rules. The event was staged on 14 September 1986 over 129 laps of the 3.9 km Sandown circuit in Victoria, Australia, a total distance of 503 km. The race was Round 3 of both the 1986 Australian Endurance Championship and the 1986 Australian Manufacturers' Championship.

There were only two classes, based on engine capacity with the cut-off between the two set at 2.5 litres.

The race was won by the Peter Jackson Nissan Skyline turbo of George Fury and Glenn Seton from their team mates Gary Scott and Terry Sheil, with the V8 Holden Commodore of Allan Grice and Graeme Bailey finishing third. 1986 was the first time a turbo powered car had won the Sandown enduro, and the first of six consecutive Sandown 500's won by turbo power.

The "Dream Team" of Peter Brock and Allan Moffat, who between them had won 14 of the previous 17 Sandown enduros dating back to Moffat's first win in 1969, finished 4th in their Holden Dealer Team Commodore. Brock had won pole for the race in Saturday's "Castrol Chargers" top ten runoff with a time of 1:49.84. Defending race winners Jim Richards and Tony Longhurst finished two laps down in 5th place in their JPS Team BMW 635 CSi.

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