Hi all,<p>We had the front brakes (pads and rotors) replaced on the R recently, along with the 45K service. I don't usually drive the car much (SO's commuter unfortunately these days) but I noticed afterwards that there was a moaning sound coming from the front. It was really pronounced after driving for a while esp during warmer weather, at lower speeds and while turning. Even at stand still it creates a noticeable vibe through the steering wheel.. as though a pump was working overtime (esp if you turn the steering wheel). It doesn't happen when the car first starts.<p>I checked the steering fluid level and it looks fine. So what could be causing this? Power steering pump I guess could be going south but its strange it should start acting up right after the service. The only other thing we did was go with a heavier oil for the CA summer (15-50W Mobil 1). Any chance the brake job was messed up and is causing the drivetrain to heat up and cause problems?