Review on 🔧 Stant Coolant Reservoir Cap for Engine by Brian Davis

Well, most of the coolant caps you can buy these days have a clicking look that can't be tightened. I've had the car since 2014 and it has always given off a terrible coolant smell along with a slow drop in coolant level. After testing it at several dealers (who found no leaks), I decided to get one of the caps that you can tighten (like this one). Note that I've had just about every type of cap I could find to fix this (new OEM, aftermarket, you name it, I've tried). The bottom line is that caps that cannot be overtightened are simply NOT tightened enough to create a good pressure seal. Not sure why, but with this cap, along with the fixed torque, the problem went away! After a few days the seal shrunk and I had to re-tighten it, but no more problems since.