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911 battery '70 911 T


Vehicle Information: Model: 911 T; Year: 1970; Body Type: Coupe; Engine (type, size, modifications): 2.2l w/carbs; Total Mileage: 89,000;

I have a NAPA series 65 battery nicely installed in the passenger side battery nook. The battery is approximately 6 months old with no visual signs of cracks or overfills. The problem is after track outings the battery appears to be sloshing out its battery acid. Is this a common problem? What is a common battery used in this application? Has anyone tried the Optima sealed battery - I understand this can even be mounted upside down with no leakage?

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