I have had the Volvo fitted removable tow bar fitted from new. I have never removed it as up until recently used it regularly towing to shows throughout the year. It is still on as I write and looks as good as when fitted. Car trailer is a greased ball, caravan a dry ball so brake cleaner cleaned in between. Never had a problem so I am mystified as to what has caused you tow ball erosion. I await with interest others who have had similar corrosion.
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XC60 VEA 181 2015MY SE Lux Nav Geartronic 8 speed Auto.
1962 LR S11a, 1970 Mk2 Vitesse Convertible.
Maybe the Hokey Cokey is what it's all about!
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