The loyal 300 Touring 2006 began to fail at 110K miles when every time the weather turned warm. Engine light on and no more than 40 mph Then when the weather is cold (I live in Midwest) it works OK I have changed the speed control board (Mercedes trans) and it worked OK for a year Now after two...

To prepare the car for some events I have decided to upgrade the transmission for some road race ready shifting. Parts cost about $580.00, add another $25.00 for Mobil 1 ATF +4. NAG-1 Trans is the same as the MBenz 722.6 I have selected the following Mercedes Benz (part numbers are all...