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See also: | Drivers, Teams, Entrants, Car Models, Car Manufacturers, Engine Manufacturers, Tyre Manufacturers, Lubricant Manufacturers, Car Numbers, Sponsor Industries, Designers |
Retirement Ratio
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until 1967 Natal Winter GP
Ignore Indy 500 races
Include non-championship races
Pos | Sponsor | Retirement Ratio | Retirements | Entries |
1 | Elf | 50.00% | 1 | 2 |
2 | Shell | 44.44% | 4 | 9 |
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