just changed to full syn Q8 oil (about 5 changes already) and for the first time Q8 oil for my gearbox..
as for the engine.. it feels good when driving. when the mech pour out my old oil.. the color is still yellow..no sludge even that time im above 1000+km then recommended (maybe coz my engine is still oke?)
as the gearbox.. my old OEM oil is black color , so thick. so have to wait another 25,000km before i know the outcome.. hehe. the shifting feel light too.sometimes i just use 3 finger tro shift gear (testing purpose)
but overal.. i really like the oil..maybe theres another better oil... but this oil is the best i can afford and never let me down..