I have bad experience with champion plugs, at least on TS.
One of them snapped while i was trying to undo it. It wasn't stuck, it broke on the first attempt without using much force. Luckily, i was able to undo the thread using a screwdriver.
That looks poorly.
Slightly off track a little, but some people would probably think about selling their 156 because of plugs (cost, seized, accessibility...).
A couple of years ago, someone advertised they were breaking a 156. They only wanted £200 because various mechanical issues etc etc. I was planning on perhaps using it as a donor car. Anyway, on arrival, it looked spanking. The owner said the clutch was knackered, engine was on its way out etc etc.
I started the engine and it sounded beautiful. The only mechanical fault I could find was the clutch pedal was a little high - no leaks from the engine. I walked away disgusted that such a sound example was being sold for scrap.
The bodywork was very good. Obv it was covered dirt, dust and bird droppings. But once I rubbed random parts of the body it had a nice gloss to it.
The only non-mechanical issue was the brakes were seized on. The car hadn't been used for about 6 months.
Why do people sell their Alfas for a few superficial problems?
That gets right up my hooter.
My 2002 SW has genuine 84k miles on the clock. I know this is correct from the MOT certs - and I had a Data check done. Not perfect, my 14-year-old car pulls like a train, reliable, no rust and flies through the MOT every year.
At this stage, you can see why one seized plug doesn't bother me.