This is from the Oregon chain website.
The life of your new chain can be extended by taking
these few simple steps before using it.
▲1. Before the first use, soak the chain overnight
to allow oil to penetrate all chain components.
▲ 2.Run new chain at half throttle for several minutes
before doing any cutting in order to allow oil to
reach all parts of the bar and chain. Let sprocket,
bar, and chain warm up fully.
■ 3. Stop, let the chain cool, then check and
▲ adjust tension often (especially
during the first half-hour of use).
Keep the first several cuts light. Keep extra oil on the bar and chain
during these first cuts, and do not apply heavy pressure.
Never run any chain on an overworn drive sprocket, especially a new chain.
◆ Replace drive sprocket systems after every two chains, or sooner.