ATF will leak in situations where it is not designed to be used. Even when replacing oil nearly as thin, ATF will seep past seals where oil will not.
The best oil to use to lube a turntables spindle .
I just sold a turntable on Audiogon to a person who apparently used atf to lubricate the spindle bearing and the motor spindle. He claims that the motor is making noise now. {It was quiet when I shipped it to him}. I don't think atf should be used to lubricate turntable bearings. I believe it probably seeped into the motor and is causing the noise. I would think light machine oil would be best. The table in question is a Connoisseur bd102 belt drive. Any input would be helpful. Thanks.