Ive just asked the same question, people join forums like this for HELP not to be sneered at!!!!
For your info my partner is driving a 911 carrera but couldnt bear to trade in the first Lexus that he had bought hence im now driving it.
I would suggest to all contributors on any forum like this that they give honest help where possible, after all we all want the best for our lexus vehicles either serviced by lexus or any independent lexus garages and as we all know there are some out there in the universe who are just as capable to do the neccesary work required without blowing it up, chuckle.