It's been quite some time since I drove my 91 up any serious hills. But did so just recently and was surprised by the difficulty it had and my need to shift into second gear from time to time.

On the relatively level ground on which I normally travel, I don't notice any issues at all...power and acceleration seem fine.

Just curious what any of the rest of you experience in your W124.

It's been 21k since I changed the main fuel filter, so I'll so that. Might tinker with the ALDA at some point.

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14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 159k miles
06 E320 CDI "Rutherford", Black on Tan, 179k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 145k mi, wastegate conversion, ALDA delete

19 Honda CR-V EX 77k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife