Originally Posted by wantaquad
Its a p38 2.5 dse manual -
The oil cooler pipes run from below the oil filter housing out to a radiator mounted in front of the main radiator.
yep yer right, it's the square shaped air cooled rad type one in that case.
I recently had issues with my TD5 and I was getting oil into my coolant. Just like your Rangie it stayed as black gunge rather than mixing and forming an emulsion. The bad news is mine turned out to be due to a cracked head. It was cracked on the inlet side so was being pressurised by the turbo.
Do your hoses get hard after a quick drive?