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#160790
Mumbles
Participant

    If your motor is worn and hard to start from leaking crank seals or low compression, using a heavier aviation oil designed for air cooled motors may help. These oils are graded differently so a W80 aviation oil would be what we know as 40 weight, or SAE 40.

    https://www.shell.com/business-customers/aviation/aeroshell/piston-engine-oil/w80-w100-w120.html

    http://www.swaviator.com/html/issueja02/Hangar7802.html