Fuel Economy & Torn CV Boot

[BeetleDragon737]

I found a tear in the boot for my CV axle, and it's been throwing grease out of there for a while. Like, possibly 6 months or more.

I've also recently been experiencing poor fuel economy. Could my CV joint be so void of lube that friction in there is ruining my milage?

 

[eddieleephd]

No, the CV isn't causing the mileage drop. That's more likely rear brakes dragging.
You can replace the boot and not the joint, however it's the same amount of work if not more.
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[wonneber]

I would want to clean the joint and put new grease in it as well as the boot.