I ran an aluminum drum for about 10 years. Always changed the fluid and filter ever 35 to 50 passes, fluid was always getting a silver color to it. Switched to a billet steel drum about 8 years ago. Car runs the same et, no change. The billet aluminum drum was not any faster... Now I change the fluid and filter once a year. Track car only...

Last edited by Dartsport540; 03/02/22 01:39 PM.
548 cu. in., Bill Mitchell Aluminum Block, CRT 727 auto trans, Alston Chassis. 8.981et at 149.46 mph. 1.204et - 60 foot, So Far....