Will study up on changing the fluid, thanks guys.

When driving downhill in my 240D or truck, I have the option of using a lower gear to help slow the car down.

I have heard different opinions if this is OK with an automatic transmission.

What say ye, oh - Mercedes forum gurus?

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1991 300E 124.030 103.983KE 722358 03 412178
207K

1979 240D 123.123 250K (Project car)

2000 Ford Ranger, 187K

2015 Dodge Ram 1500 EcoDiesel 37K