Great Wall X200 Engine Problems
Great Wall X200 2012: What oil and filter does it use?
You can use a 0W-40 A3/B4 or a 15W-40 dedicated diesel oil, and a Ryco filter. A local auto retailer should be able to help.
What's a fuel efficient SUV on the market?
I don’t believe that what you want is out there, and can only reiterate past advice, buy a Patrol/Pajero/Prado/LandCruiser.