Today i ordered time for flushing of my 2006 Is250. 250000km on the counter. why? From first contact with Lexus in Norway i was told to not do anything with it , so i talked to a former owner of my car that also is a mechanic for a Toyota store, he advised me to flush and told me that Toyota Landcruiser also had lifetime limit on gearbox oil, that have been changed to flush at some km, so i did call another Lexus store in Norway about this issue, he advised me to flush the gearbox because of the high miliage on the car, so i searched the net about Aisin that manufacture the gearbox, their advice was to flush or refill( not sure ) every 40000km.
After this info i decided to do a flush on my gearbox on November 8. After that i will let you all know about the user benefit from this, if any. After mu finding i realy dont understand the do nothing vith it from Lexus.