My old Jeep Cherokee with 236,000 miles told me I had 80# oil pressure. I knew it was a lie so I ordered this little gem. It's easy to install, just be careful not to damage it during installation. I think old jeeps throw all the oil out of the engine when that baby cracks. I'm not sure if that's true because I didn't break it. This solid machine is my DD and I haven't had any problems with the oil pressure gauge since I bought it. It makes me happy.