Wheeler dealers is a great series but sometimes they get it wrong e.g. They remove a foam air filter and replace it with a standard paper filter.
A foam filter is much more efficient at removing dirt than a paper or gauze filter. A foam filter will typically reduce the amount of dirt (silicon) in the oil by ~50%. A 50% reduction in circulating dirt will roughly double engine lifespan!
Here's a great comparison between foam, paper and gauze:
Episode
Wheeler dealers is a great series but sometimes they get it wrong e.g. They remove a foam air filter and replace it with a standard paper filter.
A foam filter is much more efficient at removing dirt than a paper or gauze filter. A foam filter will typically reduce the amount of dirt (silicon) in the oil by ~50%. A 50% reduction in circulating dirt will roughly double engine lifespan!
Here's a great comparison between foam, paper and gauze:
https://www.youtube.com/watch?v=4r8NajjYkFA&feature=emb_logo
You will find a more detailed explanation of why foam works so well here:
http://xcelplus.com.au/links.htm
There are a lot more little tweaks that can significantly improve engines which it would be nice if Wheeler Dealers considered using?
:-)