Last month, I sparked avid response from readers regarding oil filters and modified oil circulation. You can read all the comments and recommendations in the article below. I really appreciate everyone who took the time to enter the discussion. It is more that just interesting reading. The information will help us keep our machines on the road longer and performing better. It also shows that there are a lot of us interested in hands-on maintenance and restoration.

On the subject of filters, let's move up to the carburetors. Like most of the 3 Litre Speed Models, there are no air filters. They did not come with air filters when new and I always thought that was rather odd as all carburetors should have air filters. Other Vintage Bentley models have air filters as do most all cars that have SU carburetors. The problem is that on the 3 Litre Speed Models, the carburetors fit up close to the bonnet leaving little room for fitting an air filter. I have seen some modifications to add air filters but how effective they are, I am not sure. So what is one to do? Let's hear your answers.

I would like to thank the following vintage Bentley enthusiasts for their contributions in January 2014:

Agustin Andresen, Bruce Mackenzie, Charles Crail, Chris Johnston, Chris S, Chris Tutton, David Morley, David Reynolds, Donald Day, Ed Gehringer, Geraint OWen, Gordon Sawyer, Gordon Webster, Gregory Porter, Hugh Apthorp, Ian Cumming, James Medcalf, Janet Lyons, John Murch, John Murray, John Skidmore, Mike Edgar, Mike Tebbett, Neil Collins, Nick Meijer, Norbert Andrup, Peter Graham, Pipo Aymamí, R D Wellden, R. G. Toone, Robert Craven, Robert Wellden, Roland Frey, Roley Fraser, Roy Ginn, Roy Kent, Sidney Farnsworth, Simon Burgess, Stephen Gross, Steve Wynne, Stuart Maxwell, Tom Purcell, Volker Buerkle, Wayne Kennerley, Whit Ball