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1970 911S oil change

Engine

Vehicle Information: Model: 911S ; Year: 1970; Body Type: Targa; Engine (type, size, modifications): 2.2 stock; Total Mileage: 55000, 3ooo on rebuild;

On changing the oil, manual says 9.5 liters. After draining sump and filter, 6 quarts causes an overflow. Is this due to oil expansion at 170 degrees?Second question is how to stop red light at top of oil guage from shing constantly.Thanks!P.S. This car is cover car on Michael Cotton's old book, the History of Porsche. Still in great shape.

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