2002 VW Passat 5spd with 116k, unknown transmission maintenance history (has had two axles replaced, no mention of fluid changes on those reciepts). I changed trans fluid recently and found it to be 3/4 qt low and fluid had visible yellow-metal glitter left at the bottom of the drain pan after I poured it off. Is that bad? Trans seems to function fine, although shifting could be smoother. New fluid is Redline MTL (2qts) + 1/2 qt MT90.