Mercedes S-Class service, the honest way
Does Transmission Fluid Go Bad? Lifespan, Warning Signs, and Storage
Yes, transmission fluid can go bad. It does not, however, deteriorate on one universal timetable. Fluid life depends on the transmission design, fluid…
By Stefan Roth · 2026-08-10Latest
PO335 Crankshaft Position Sensor A Circuit: Meaning, Causes & Diagnosis
The standardized diagnostic trouble code is P0335, with a zero after the letter P. “PO335” is a common letter-O-for-zero typo. A scanner may describe the…
Signs of a Failing Torque Converter: What to Check
Slipping under load, delayed engagement, overheating, abnormal fluid, transmission-area noises, and occasional low-speed stalling increase concern about the…
Capacity Transmission Fluid Guide: Find the Correct Fill Amount
There is no universal transmission-fluid capacity. The correct amount depends on the vehicle’s year, engine, drivetrain, installed transmission, transmission…
Color of Transmission Fluid: What Red, Brown, Black, and Milky Fluid Means
Fresh conventional automatic transmission fluid is commonly translucent red or pinkish-red. Dye makes the fluid easier to identify and can help reveal leaks,…
Mercedes Transmission Fluid: the 722.6 'Lifetime Fill' Myth & the Fix
Why Mercedes called the 722.6 fluid lifetime, what it really needs, and the change procedure that keeps a W220-era transmission alive.