I'm going to replace my fuel lines in my '85 Vanagon Westfalia soon, and I've seen mention of both 7mm and 8mm lines to do the job. Van-Cafe says that 7mm were original but they sell 8mm. 

What are people using? 5/16 line is closer to 8mm, and I guess people are using that, too.

Thanks,
Ed in CT
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