 Instead of just having like a list of 30,000 or five years or whatever, we always test the fluids to make sure that it's ready to get replaced. Because, you know, honestly, you want as much life out of it as possible. So, you know, if it's still on the edge of like, oh, you're fine for now, let's look at it next oil service. That's kind of what we like to do. How do you test the fluid? Okay, well, I learned a lot then. Okay. Yeah.