I plan on switching to Mobil 1 when I take my car out of storage next year. So far my car has a whole 700 miles on it but when I used Mobil 1 about 20 years ago the plastic bottle said it was good for 1 year. I think they've changed it but depending on the miles I put on it that's probably going to be how often I change it. I think they officially recommend changing every 6,000 miles or 6 months. Twice as long as regular oil.
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