gathomas- we will coat the moving parts with never seize when we do the brakes on our trucks and YES if the pins and bushing and boots are warn they need service... often its the high chemical content of the winter road treatment... Shadrach is in Edmonton and I can't think of another city that uses as much as they do... . I wonder at times how those vehicles make it 5-7 years with that rough chemical working on the metal... .
Barry - next time your in Timmonsville say Hi to Gary for me... I had an email from him today... we always use about a qt. of brake fluid once a year, here where we have a lot of chemicals on the road... when we buy a new truck the first process is to lube up the moving parts and try to prevent the chemical attack... on some parts we use a SPRAY ON brand chemical called, PDRP, it sprays on wet and drys like its got a wax coating... very protective to no moving parts. . on those that move we use never seize to protect them... we even open the bleeders and coat the threads, NOT THE SEAT and put them back together... .
Anyway we bleed the brakes annually with a qt of fluid and when we get around to changing pads we never allow the brake fluid to go back into the master... On the clutch system, we service it differently and some might object to our theory... but we pull the slave, and compress it... a second person uses a turkey baster to draw out of the clutch master as much fluid as possible... 5-6 cycles like this usually gets I'm guessing 90% of the bad fluid... . I do the same on the Motorcycle that I own... .
The last time I had the bike into a dealer for tires he wanted to compress the piston and install new brake pads... I asked about flushing and bleeding the brakes and his comment was ""we never do it""... . I politely told him that the service manual paid him for that operation when doing brakes with a tire change... . he said it wasn't necessary... I again politely asked for the bike back with my old tires... and I'd go someplace else... than I watched his tech run the back wheel on with impact wrench... . Yea its got 4 lug nuts... This is a very sad story... ... I ended up in the owners office, upset to say the least...
Hope this helps... .
One last thing... . when I was in an Automotive and Diesel program some 40 years ago... one of the key things the instructors taught me was to always remember that if you can save a nickel a vehicle and get it out past warranty than you'd done your share in manufacturing... and if you think of the millions of vehicles a year, and time, and labor to coat moving parts, there's a quarter on each vehicle... . the second most important thing he taught us was to treat our customers vehicles the way we treated our own when it came to repairs. . and maintenance... You'll see my approach in what I write is very conservative... I just don't throw parts at vehicles and replace stuff that is serviceable.