Ask Honest John

Most recently answered corrosion questions
I bought my new Puma in October 2020. At the two year service, I was advised the rear discs were badly pitted and corroded, and as I noticed some uncomfortable braking, I had new rear discs and pads at...
I bought a second-hand Dodge (2008 model) around four months ago. The car was sold with a new MoT which had an advisory foe the rear subframe (corroded but not seriously weakened). This week the axle...
I have 2019 Nissan Qashqai. All four doors have small spots of rust at the top and bottom. Whilst being serviced they also said a door isn’t aligned properly. They’ve said they can touch the rust spots...
Living up North our roads can be liberally sprinkled with copious amounts of corrosive rock salt. I do believe it has become a 'finer' salt that is used today, hopefully causing less bodywork damage than...
We've had a reoccurring brake wear issue with pads and drums on our Isuzu D-Max (changed four times between March 2016 and December 2017. The vehicle is used on a farm for average off-road (not excessive...
My Nissan Navara failed the MoT due to a corroded chassis. Nissan said that they will not fix it because it's seven weeks past the warranty year. I purchased it new in 2005 and loads of Navara have this...
When I have my Land Rover Defender re-sprayed, what can be done about the aluminium corrosion on the door panels and round rivets?
My Fiat Grande Punto is having various electric problems, from headlights not working to headlights coming on when I've not got the key in the ignition (solved by turning the heater off). Any ideas before...
I have a Mercedes-Benz E-Class Estate, which I've had from new since December 2015. The front wheels are corroding from beneath the lacquer around the centre caps. As the lacquer is not damaged/broken...
Increasing numbers of 2006 - 2012 RAV4 owners are reporting fuel leaks caused by corrosion of the fuel filler pipe. This is due to the use of thin low quality steel combined with road debris and mud accumulating...
 

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