2012 2.2 - Mystery sound : Whistling turbo ?

Well I took the Defender into Ebbetts last week to get the whistling noise checked out. I dropped the car off the night before and then called in the

Differential oil.

Thankyou Colin That has answered my Question. I will try and get some Toyota GL4 or similar.
Cheers Danniboy

In my head?

Series 2A Gearbox oil and differential oil

I checked with a 'blender' I purchased oil from and some GL5 oils are OK, it depends on what high pressure additive they use. He said theirs was OK but

ECU Repair

to look into yours, way more than the quoted x amount of days.
I do have a 15P sitting here but its for a disco 2, so no good for you.