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D2 V8 engine oil cooler


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It seems that the pre-facelift Disco 2 V8s (2000 - 2003) are fitted with engine oil coolers. My friend's pre-facelift car definitely has an engine oil cooler. Now I am contemplating retro-fitting the oil cooler.

My 2004 facelifted D2 V8 ES (fitted with a 4.6) does not have an engine oil cooler. I have fitted a VDO oil temp gauge to my car (as well as a VDO coolant gauge) and found as follows on my 5000km trip through South Africa (Pretoria - East London - George - Pretoria):

The oil temperature would rise to 100degC (+- 20degC ambient temp) with engine coolant constant at 98degC. Coming through the Karoo at 32degC, engine oil was at 110degC and would climb to 113degC with long uphills. I did not tow anything.

So, now my question is, do the V8 really NEED an engine oil cooler? My observations seem to suggest that it is really not needed!

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