In-line fuel thingy

Hi all,

I have been meaning to ask this for a little while now, after I bought my 90 and towed it back to my Nans field, I noticed something in between the carb and the fuel pump. It's a cylinder which the petrol appears to flow through about 9 inches long, it looks factory as there are some white clamps around it connected to the washer bottle?
There is a sticker on it but all I can read is in-line conditioner?

I asked my college tutor what he thought it was and he went and got something that looked very similar to mine, he said it was an in-line lead replacer, he got it for his Westfield he was building to supposedly turn unleaded fuel back to leaded?

It's just bothering me as my 90 is a 1986 2.5 petrol and everywhere I have read my engine should have been built for unleaded fuel.

Can anyone help? Is it needed?

Cheers,

Lloyd

piccies??

Can't get to the Landy at the minute? Looks a lot like this. But mine is coppery in colour and about 25 years older It's on the near side wing, on top or the washer bottle.
https://www.google.co.uk/search?q=in%20line%20fuel%20conditioner&oe=UTF-8&hl=en&client=safari&um=1&ie=UTF-8&tbm=isch&source=og&sa=N&tab=wi&ei=MDyvUdawBMW00QWZmYDgDA&biw=768&bih=928&sei=MjyvUY-uPIqM0wWL2oHAAw#biv=i%7C25%3Bd%7CPtrkdQRDW8eEKM%3A

Fuel cat, enables unconverted leaded engines to run on unleaded fuel...

Ohh hell. Possible this could have been factory as they changed from the 2.25 to 2.5?