Primarily I am interested to know what color is the gearbox oil on my car? 07 Octavia 2.0 TDI BKD.    I have some sort of leak or 2 leaks and I don't know where to start from as it's pretty difficult to tell them apart... I had the bottom of the engine area washed clean and dried in order to try and spot where it's coming from. An experienced opinion would be appreciated.   1st: A transparent warm white'ish color liquid is dripping along the yellow arrow in the belo