If you are driving at or near sea level, the ADA will already be maxed out. However, it could be set too lean to begin with, we often see this with ALDA. You certainly could try adjusting it for more fuel and see what happens. Too much fuel and you will smoke and have worse fuel economy.

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"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970