Muhammad won a scholarship from the U.S.'s Caltex oil company while studying at the prestigious Bandung Institute of Technology.

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But he turned down an offer to join Caltex after graduating.

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Aiming to stop Els joining that group will be Australians Greg Norman and Adam Scott, with Colin Montgomerie also playing following his second place at the Caltex Masters in Singapore last week.

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The industry organisation insists that the country's big oil companies - BP, Caltex, Mobil and Shell - "do not profit from high crude oil prices", but are in fact "cushioning the Australian motorists from the full effects of rising crude oil prices".

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