CV joint grease must be changed constantly in such situations: if a new constant velocity joint is being installed, and also when the boot is being replaced.
It is also relevant to replace the lubricant when the car's mileage reaches more than 100 thousand kilometers, given that this was the last lubricant change.

Also, one should not forget that it is necessary to lay the lubricant on the recommendation of specialists; an excessive amount of the mixture is not rational. If there are doubts about how much lubricant to fill in the CV joint, then it is better to turn to specialists for help, so that they prompt and advise.
The choice of lubricant for the internal hinge is always a very important decision, so you should remember that before buying it is better to familiarize yourself with all the technical characteristics so as not to harm the device.