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Reply to "Which engine is this"

@Bob: IM S6 A few friends of mine drive 915-equipped 911s from the 70s. A couple of them have recently switched from conventional gear oil to Swepco 201. They are impressed, it seems to tame the ever-slightly-notchy and cantankerous patience-grasshopper-slow-shifting 915 transmission. They say it shifts better cold and smoother and easier all-around.

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