When they soldered my pipes, they did not remove the flux. Years later, they look realy bad. What can I put on the pipes to clean or neatrulize the corrsion?
Yes, as long as the replacement tires are the same size and the same quality as the originals, then the factory recommended air pressure is good. If you are ALWAYS getting a different pressure than your mechanic, then maybe YOUR tire gauge is out of calibration.
By now the neutralization has already occurred - that's why it looks so bad. It shouldn't proceed much further, and is unlikely to seriously weaken the pipe, solder joints or fittings.
Baking soda and warm water usually works. But if you trust store bought solutions, CLR is pretty good too.
Actually cleaning off the corrosion will do more harm than good. That layer of ugly green white crud is keeping oxygen from getting to the copper, antimony, tin etc that is the sweat joint.
The car manufacturer knows BOTH the car weight distribution front/rear, performance and is in the best position to establish the correct tire pressure for different tire sizes and load conditions. Tire manufacturers provide next-best info, being generic as to the size weight of the various cars they can equip. Your tire man is right in overinflating the tires: it saves fuel AND tires and give you some extra time before you have to recheck the pressure. And you are supposed to check the pressure once a month with no load and cold tires.
