The guarantee without small print
Also read: Best BIFL Leather Wallet: What to Look For and Which Ones Last and Best BIFL Multitool: Leatherman Wave+ vs Victorinox Swiss Army
Zippo's unconditional lifetime guarantee is on their website without qualification: if a Zippo product ever fails due to a defect in materials or workmanship, they will repair it free of charge. No proof of purchase, no time limit. You send the lighter to Bradford, Pennsylvania. Weeks later it comes back repaired or replaced. This policy has existed longer than most brands have been around.
How the mechanism works
A Zippo uses petroleum naphtha as fuel, stored in a cotton wadding inside the body. The flame burns on a cotton wick. The wheel scrapes against a flint — the same basic principle as striking flint on steel. Every component — wick, flint, spring, wadding — is sold separately for almost nothing. The only part you genuinely cannot replace is the outer case, and that does not fail under normal use.
Fuel: useful where gas does not work
Most modern lighters use butane. Butane flows poorly below freezing and underperforms at altitude. Zippo's naphtha works at low temperatures and high elevations. That makes it genuinely useful in places where a BIC gives up. The trade-off: naphtha evaporates from the body in a week or two if the lighter sits unused, so you refill it after a long break.
Who it is not for
If you rarely light a fire or a candle, a disposable BIC is the sensible choice. The Zippo has a specific niche: people who use a lighter regularly and think of it as something that develops a patina, gets worn in, and can be passed on.
