Strange spinning/howling noise Solved

Hi my fellow freelander lovers, I have a problem with my 2004, 1.8 petrol facelift freelander. It has started making a wierd noise, It sounds like some spinning/howling sound. It starts when you start moving, it's worst at 20-40km/h and starts stopping at 65-95km/h or I just don't hear it so good because all the other noises. And it also in its worst when you decelerate to 40-20km/h. I took my car to repair shop, but they didn't find anything, cause we don't have many land rovers here in finland.

BeardedFinnish said:

it's worst at 20-40km/h and starts stopping at 65-95km/h

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It could be the VCU support bearings failing.
I would also be check the IRD oil for metal particles. It should be changed every 5 years or so anyway, but never is.

I had a feeling that they might be the support bearings. I could change those and the oil.

Hi, is there any specific oil you should use for the rear diff and in the IRD? I live in Finland, so temperatures change from +30 Celsius to - 30 Celsius.

BeardedFinnish said:

Hi, is there any specific oil you should use for the rear diff and in the IRD? I live in Finland, so temperatures change from +30 Celsius to - 30 Celsius.

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IRD uses 75w90 full synthetic oil. The rear diff uses standard 80w90 oil.

Do you mean 80w-90 because I couldn't find a straight 80w? Is it how picky about that rear diff oil?

BeardedFinnish said:

Do you mean 80w-90 because I couldn't find a straight 80w? Is it how picky about that rear diff oil?

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Yes I mean standard, as in not synthetic 80w90. Auto correct on phones are a pain sometimes.
I'll edit it to make it correct for future info.

Okey. But I was wondering how picky it is, cause I got oils changed couple of weeks ago, and they put syntax ls 75w-140 oil in the rear diff, I was just wondering if the noise is because of that? I phoned them and they will look up why they used that oil

BeardedFinnish said:

Okey. But I was wondering how picky it is, cause I got oils changed couple of weeks ago, and they put syntax ls 75w-140 oil in the rear diff, I was just wondering if the noise is because of that? I phoned them and they will look up why they used that oil

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A thicker oil will normally reduce noise, not increase it.