I can ONLY relate my own personal experience over 50 years in farming, truck n tractors sales and RV's
with countless (well over a hundred Im sure) batteries grrrrrrrrrrr lol OTHERS MAY WELL HAD DIFFERENT
RESULTS AND EXPERIENCES, thats to be expected.
Okay each n every time I thoroughly cleaned n shined the posts,,,,,,,,,Placed felt protective washers
underneath,,,,,,,,,Attached quality terminals,,,,,,,,,,Sprayed the final connection with that red battery
terminal protectant spray I NEVER HAD PROBLEMS LATER
My OPINION is it was the red protective spray coating that did the MOST and was MOST HELP in reducing
problems. The washers may OR may not made a difference ?????? I have no data or tests or experiments nor
can prove or disprove it IM ONLYYYYYYYYYYYYY SAYING WHEN I DID AS ABOVE I HAD NO LATER PROBLEMS.
NOTE 1) If a battery is outgassing extremely (perhaps from over charging,,,,, perhaps from internal
shorts or other battery problems) that contributes to corrosion at the terminals REGARDLESS if all the
above is done correctly.
You did NOT ask other questions so I am purposelty NOT addressing alternate battery types such as AGM
etc.
You ask Is it worth removing the battery clamps again just to put those felt washers on them?
My PREFERENCE would be to use the red protective spray versus removal HOWEVER its YOUR choice and if YOU
want to remove and use the washers thats fine BUT I WOULD THEN STILL USE THE RED SPRAY
Im sure others may agree or disagree and hope they can add more to this
John T