I know this may be beating a dead horse, and there's a sticky, but maybe someone can put it into simple terms. Here's my issue. I have a 6x12 utility trailer that I use to haul a Polaris Ranger. I use it once or twice a week 100 miles each way, mostly highway speeds. A couple of weeks ago, I had a bearing failure and lost the wheel, hub and all on one side. Long story short, the trailer was towed to a shop where a new axle was installed. The old axle was Dexter EZ lube. Not exactly sure about the new one, but it does have the zerk on it. I'm also not exactly sure what type of grease is in it now, other than it's red. I have the "Green Grease" from Autozone in the gun now and an extra tube on the shelf. Not sure if I should use that to add to it or not. I do know that I don't want to send another wheel skipping down the highway. I had been using Mobil 1, but switched to the Green because I got tired of the leaking.