Ask Honest John

Most recently answered corrosion questions
I have a 2007 Vauxhall Zafira that has very annoying squeal. It started in June 2012 and I hear it on almost every journey, intermittently. It appears to come from the driver front wheel. If I stop the...
Can you give me some advice and possibly point me in the right direction of which way to proceed with a problem with my 2009 Mini Cooper cabriolet that I have had from new. The car has been serviced by...
My wife and I are off down under for two months as a retirement bash. I shall be leaving my 2004 Mercedes C-Class K200 in the garage and unfortunately I have no-one to give it a run now and again. I seem...
My wife's 2008 Mercedes-Benz A-Class brakes have started to 'judder' and, after its latest major service by the main dealers, the discs were found to be 'warped and corroded' but with still plenty of pad...
What should I expect to happen after owning a BMW which is just 12 months old which has been found to need all discs and pads renewing? Mileage is 10,800 of which I have covered 3600. Did not use car...
The reaction between brass valves and alloy caps is caused by electrolysis and can be reduced significantly by smearing the brass stem or cap with Vaseline. I had a major problem with brass fire hydrants,...
Regarding the Mercedes-Benz C-Class: What is the optimum wheel size? When did the rust problems end?
My MOT has come back with three advisorys - leaking shocks, treads down to 3, but the one that worries me is that they said the rear of my fuel tank is badly corroded and will need to be replaced within...
Our May 2012 UK-supplied BMW X3 has quite severe corrosion on the rear brake hubs. I contacted the local dealers' service dept, was initially ignored, then emailed them a picture yesterday. The guy rang...
I have just bought (approx 1 month ago) a 59 plate Civic 2.2 CDTi from AC. I have just noticed a little bit of rust when putting some stuff in the boot today. It is when the roof ends at the boot, behind...