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I can't remember the exact time recommended in the owners manual Jimmy. But, in the very cold states I wouldn't go longer than 2 weeks. BTW, you need one if your Vette is not driven often even in the warm months. It makes a big difference in how long your battery will last. It's cheap insurance. I bough mine at Wally World, and use it every time I put the car in the garage no matter how long it's going to sit.
Last edited by Rebel Yell; Dec 11, 2016 at 01:50 PM.
