Interesting topic.
I think the standard 300Tdi Disco's air filter element is too small for dusty conditions. Having travelled a few times behind other vehicles on dirt roads, I got into the habit of shaking clean the air filter element every night. And I was always surprised at the amount of dust in the filter element.
When I re-bored the engine at 396k km, I could just get a clean bore at 2nd oversize
The obvious solution would be to fit a Donaldson, as per Defender, but space is a problem.
Would a snorkel alleviate the problem ? When we travel on dirt roads, the dust go much higher than the roof of the vehicle, hence my doubt about the effectiveness of a snorkel to reduce the dust burden on a filter element. I would appreciate the informed wisdom of this forum ๐