Leaking floor jack

[mikehkang]

Update:

At least for my Duralast 3000 lb Aluminum jack, there is a "seal kit" that I can buy from Torin. (If your jack label has 888-448-6746 phone number, I believe it is made by Torin in China.)
The price of the kit is $12.50, fair enough. What is messed up is the method of payment: it is either a money order or COD. The COD is $9 extra to the USPS.

I am going to order the seal kit. I don't expect that I will be able to repair it but it will be a pleasant surprise if I do. At minimum, I gain an insight as to how a floor jack works.

I also looked into buying an OTC, the lifetime warranty jack. Their 2 ton aluminum jack is $230ish on Amazon. I asked OTC customer support if my current problem, the leaking oil, would be covered under their lifetime warranty. Well, not exactly. The normal wear and tear is not covered. Too bad.