Should I use a rain repellent on my classic car?

I drive a 1964 Humber and the wipers are not brilliant, even though I have renewed the blades. Would Rain-X help as I have heard mixed reviews?

Should I sell my Rover 416 GSi?

I have a 1992 Rover 416 GSi which has done 34,000 miles but has been unused for the past eight years. Is it worth getting it MoT'd to try to sell to an enthusiast or should I sell it for parts for £170?...

What is the best lead additive on the market for four-star petrol?

I have a 1958 Bentley S1. What is the best lead additive on the market for four-star petrol?