Because they had shelves full of spare parts and we're competing in stock/super stock. Gear life wasn't a priority.

None of the Chrysler Engineers “raced” a car in competition. They didn’t have shelves full of parts. Mopar did though.

The Seminars never promoted anything that would cause damage or affect durability unless they prefaced that with a warning.

I seem to remember several different Hemi cars that the race group engineers used for testing 1968 Charger and several different A bodies along with a bunch of other pro stock type cars, IE Don Carlton Hemi Colt for Comp Eliminator

Read my post again Cab, they used cars for testing but they never “competed”.

I never knew any of the guys that would make a statement that would lead to failures.
And I knew all of them.

As with many other things, what the factory manual says and/or recommends is not really relevant to a vehicle used exclusively for drag racing. Drag race rear ends are not subject to one of the main causes of gear oil breakdown and rear end failure, heat. Nor are they expected to reliably be ran for 100,000 miles, likely with the same oil it was put together with.

I will back to back test 3 qt's vs 1 qt. And report the results when I hit the track in April.
Doug

Looking forward to the results of this test!

Doug won’t see any improvement.

He’s making too much power.

Now if he was running N/SA with a /6 he may see some improvement. 😂😂