Best way to get cleaner air in the engine when at the back of the convoy?

[Aussieadventurer]

Best way to get cleaner air in the engine when at the back of the convoy?

 

[Crawler80]

Snorkels help get cleaner air too. They are not just for deep water crossings. So a snorkel with a second filter on top can be a good solution

 

[Sam Mills]

I would also recommend getting a snorkel mate

 

[RenegadeOverland]

A snorkel with a secondary filter on it is by far the best choice. They are not available for all vehicles though