I wrote that CV joints in my experience last forever if the boot
is good, or words to that effect. My experience is just that. I
have driven hundreds of thousands of miles in CV joint equipped
cars, mostly Volkswagens. If the boots survive, so do the joints.
Good boot, holds grease in and gritters/water out yields happy CV
joint that becomes an auto part senior citizen. That's my normal
expectation.
I do keep an eye on the boots and their grease retention. On
Benzes (perhaps I should say "On the Benz", so I will) I have had
boots start to sling out grease with no visible indication of
trouble except the slung out grease under the car. I replace the
boot(s) and repack the joints if that happens.
On VWs, the boots are somewhat different than on the Benz, and
highly visible. If a VW joint is losing grease, you can almost
always see why.
A couple of people said that they have had CV joint failure
without boot failure, that is, a joint or joints failed while
packed in grease in intact boots. At least I got that from
what they wrote. They didn't say about water or gritters.
I find that really strange. Do others experience CV joint failure
without warning with intact boots, like the two seem to have
experienced? Does VW have a joint/boot design that is much superior
to that on Benzes? Why the difference?
Inquiring minds want to know.
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