Air alone couldn't cool the Porsche 911. A variety of oil-cooling supplementary devices worked over the years to keep those engines running. Porsche fans are probably aware that the 993 generation (1994 to 1998) was the last of the air-cooled 911s. What may come as a surprise is that vintage Porsche 911s are not exclusively air-cooled. In fact, they use a mixture of air and oil cooling to... [2913 chars]
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