1994 GMC 2500 base model, does not have free floating axels or anything, just standard rear wheel drive. Had bearing problems last year on the right side, so I replace the bearings and used the same rotors and changed only the outer race (could not get inner race out, but it looked good). Packed the bearings by hand with penzoil axel grease (707L) and just loaded up the inside of the rotor with grease. Fast forward to this feb and the same bearing is making noise again, so this time I go all out and get myself new rotors with races, pads and bearings and pull out the haynes manual. Followed it to a T, packed the bearings with 707L, lubed up the inside of the rotor, installed the dust seals on the rear, lubed the spindle. Put the hub on with the bearings and torqued the nut to 13 foot pounds like the manual says. Then I spin it, then I loosen the bolt, and finger tighten and then put in the cotter pin. Now not even 2000 clicks later, I can hear that ******* squeeking/rubbing noise that is a classic symptom that I'm all to familiar with that's a bad bearing. Am I doing something wrong? Is penzoil 707 crap or what? I use it on my bike and it seems that if any water gets into my linkage bearings this grease doesn't hold up at all. I'm suspecting that it's just no good for wheel bearings... Maybe I'm not packing them right? I do the typical hand palm treatment until I can see grease starting to push out on the top of the cage. Any packing tips that you think I need to know I remember checking the spindles on both wheels and they looked great with no visible scoring, but maybe they weren't? Today I bought some premo bearing grease, lucas xtra heavy duty wheel bearing grease. I read the tub and it says that it exceeds marine specs so I'm assuming that it will hold up to moisture well. Any tips for this backyard mechanic? Wish I had a pro to show me how to do shit right the first time, my first mistake was that I did not torque and re-tighten the bolt the first time, I just torqued it down and was told later that the bearing must have a little play. Tomorrow I'm going to get the truck up on jackstands and pull of the wheels/rotors and take a look at the grease and see how it's holding up. Hopefully I can re-pack them and things will be ok until I get a new truck in a few weeks here. Thanks for any and all advice!