I recently purchased a 1993 Accord DX with 151k miles. The car was in very good condition overall, but two items came to my attention: the muffler (now replaced) and leaking grease boots on both front upper ball joints and tie rod ends. The lower ball joints appear to have been recently replaced, so they don't concern me at present. The local Honda dealer says "replace all these, as soon as possible, because they will soon seize and break, with CATASTROPHIC consequences!!!", and showed me the usual graphic images of death and destruction. Needless to say, I did this on my previous Accord (a 1993 SE), to the tune of about 0 for all four joints and both rod ends. The people who sold me the car (an independent garage which specializes in Hondas) say "you can replace them if you want, but it's a lot of money for something which will just reoccur in a year or so. Just keep 'em greased." Who's right here? And, why can't I just replace the boots? (I know Honda doesn't sell them separately, but aren't there aftermarket replacements?)