C-4?
On my C-4, the fluid level is below the spedo connection. And it doesn't have to be the O-ring leaking. Sometimes it's just the attatchment of the cable housing to the spedo connector that leaks a little. Only a new cable will cure that.
Rev
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'66 Coupe, 306, 350-375 HP, C-4, 13.07 e.t., 104.8 mph, 1/4 mi.
O.B.C. #2
'66 coupe
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