Apparently they don't work that well at highway speed, or so I'm told. So Vlad, an air ram may still be better for you.
In the Big Desert in Vic. the precleaner picked up heaps of debris, but surprisingly on the Central Aus / Simpson trip it hardly picked up a thing, but the snorkel socks collected heaps. I suppose it depends on particle size, but the debris it picked up on the Big desert trip would have been enough to clog a filter, so I think they're worth it.
