I bought a used trailer and the guy said it had never lube on it, worry free. Had it a year and pulled a wheel to check the brakes. It had Eze lubes. Grease zerks never had a gun on them. I'm the third owner and the OEM tires were worn out so I don't know how many miles were on it but it had to be quite a few. Second owner hade it five years and it's seven years old so I'm assuming it's never been serviced. It's at the trailer shop get the axles service as I write. I pull it 3000 a year. I'm not going to do the once a year deal and won't use the grease gun if that is the kind of life it's been through with no problem.