Douglas beat Oldershaw 57-0 at Port-e-Chee to give them a much needed boost before the Christmas lay-off.
Andrew Evans bagged five tries as Douglas went on the rampage against struggling opponents.
There were also tries from Simon Heggs, Will Latta, Callum Carine and Bryn Snellgrove who also added six conversions.
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Manx squad to welcome Cumbrian opponents to The Bowl this weekend
FC Isle of Man to face Brackley Town in first pre-season friendly
Ravens to host National League opposition in Ramsey
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System could help local players compete internationally in future
Athletics: David Mullarkey in GB squad for European team championships
Island athlete to contest 5,000m race in Madrid later this month
Boxing: Sam Rennie not ruling out further title push this year
Manxman hoping to build on recent WBC title victory