<https://irishrailwaymodeller.com/topic/4561-grease-or-oil/#comment-72790>
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"Sewing machine oil is a good substitute for the name brand lubricants. Use light oil on the motor bearings (important but often overlooked, just needs the tiniest amount) and on the worm gear bearings. \nSome light grease is best on the worm gear itself and the drive wheel gearing. \n"
<https://irishrailwaymodeller.com/topic/4561-grease-or-oil/>