leaks for what it's worth, I just replaced the stant relase cap with a stock non-release type.....reason was the rubber inside the cap deteriorated and was letting the cap leak when hot.....that being said, this is a 30 yr old car and I have no idea when the stant cap was put on....I would think a 10 year old cap has served it's purpose well......just my OPINION....ha, ha....Robert
OK, here's my opinion. The lever caps and the octagonal caps look like crap, leaky or not. You can get the original style repro from any Mustang house for a reasonable price and they look way better. And it is possible to remove the non-release type without scalding yourself. And yes, I am an ASE certified Master Technician! (At least I was 15 years ago!)