2010 Range Rover Sport 5.0 Loud Whine / Squeal On Startup
Hi I have owned this 2010 Range Rover Sport HSE 5.0 N/A for a while now and just recently had the following work done at the same time:
Transmission fluid service with a new upgraded Lucky8 transmission pan/filter
Engine oil and filter change (Castrol Edge Professional 0W-20)
Rear crossover coolant flange pipe replaced
Immediately after the service, I noticed a loud whine/squeal on startup. It’s loudest and lasts the longest on a completely cold start (about 2–3 seconds). Once the engine is warm, I may still hear it occasionally on a startup but only for about half a second before it disappears. Sound seems to be coming from front left engine area.
The mechanic has checked everything over and says everything looks good, but they haven’t been able to identify the source of the noise.
Has anyone with the 5.0 AJ133 engine experienced something similar after an oil change, transmission service, or rear crossover pipe replacement? Any ideas what I should have checked next?
I've attached a video of a cold start, where the noise can be heard clearly. Thanks!