Date registered: Aug 2002
Vehicle: '85 2.3-16 '99 C280 '11 GLK350
Location: Scottsdale, Arizona, USA
Mentioned: 0 Post(s)
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Oil in the trans fluid could also indicate a leaking main seal between the engine and trans.
As for the "lifetime" trans fluid in the post 93 cars . . . the lifetime that is meant is the lifetime of the trans, not the owner(s). Without servicing the fluid, the internals of the trans will eventually clog, overheat and scortch the bands. Those transmissions take about 8 liters of fluid and only MB fluid should be used.