Join Date: Jun 2007
Power loss after gearbox oil fill?
I have recently topped up my gearbox oil on my 159 TBi, from 2 liters that I had put in October last year, to 2.7 liters of Fuchs Sintopoid 75w-85. Didn't drive it immediately, but after 1 day, and suddenly I feel I don't have the same torque and power in 3rd gear and up. Second gear seems to have the same acceleration, but next gears...somehow feel slower.
I will drive more, to get a better feeling, but I'm already worried. Is there any idea if this could happen, and why ? I cannot find any explanation. I would say the top up has no way of making sensible difference in power and torque. Could it be that the 75w-85 is making such a big difference from the 75w-80 that everybody recommends ?