If it helps, you can use Google to do the search for you.
Open a Google page and in the search bar type 'site:' followed by the website you wish to search, then a space and what you want to find.....
Site:forum.a8parts.co.uk lpg
This throws up loads of stuff!
Now the other thing you hate about forums like this is probably pedantic people, so with that in mind, LPG isn't an acronym, it's just an abbreviation.
My work here is done!