Re: BTV Issues...

Posted by Owen_Dyneto On 2010/9/26 10:11:58

The Bendix (B-K) vacuum power brake and clutch boosters used on the Seniors thru 1939 have leather piston seals and I have used Mobil Vacuum Oil to lubricate them without problems. Lubricating them once every 15 or so years (more-or-less every 10,000 miles) seems more than adequate. The Mobil product seems to also do well in vacuum windshield wiper motors as well.