Rough Engine Noise in the mornings...
Hi, I have a 2011 IS350 F-Sport and I have noticed that the engine sounds little rough when starting up the car first thing in the morning and driving off. There is a very slight noise that can be described as a sowing machine that corresponds to gentle acceleration.
I brought this up to the dealer service and they determined that the noise is normal and that the noise is caused by very slight rub between the cylinder and the wall when the engine is not warmed up. The also mentioned a high (?) level of "silica" which supports the "rub" theory. Sounds pretty bad but they keep saying it's normal.
Anyone have similar issue?