First thing, Knock off the grease cap. Then raise the vechicle so the tires can be spun. Slowly grease the zerk and watch to see that grease comes out the front near the spindle as you turn the tire. If no grease is coming out the end near where you are squirting the grease, STOP. You may have a blown seal. I think that greasing all the time is totally unnecessary. My car has 133k on it and nothing has ever been greased. By pulling the wheels you can inspect the brakes. For those who are old enough,remember back when AAA paid to have your brakes adjusted every 5000 miles. I would worry more about brakes than bearings. I kinda like to stop when needed. I don"t want grease on my brake shoes. (Thats why I threw those stupid drum brakes out and now have Hyd Disc)