The inner boot on one axle looks like it has seen better days BUT it is not busted. It is clearly in worse shape than the other 3 boots. It is cracked but all the grease is still in there.

Should i bother to get it fixed (i don't have the tools to install a new boot) by putting on new rubber or just wait till it splits open?

I don't imagine replacing the axle as real big deal but I'd like yall's opinion on what is the smarter approach to this situation.

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Jennifer
90 350sdl