The shop I went to said they replaced them and did not charge me because I am a long time customer, ok cool. Well today I decided to check there work. I found that the stems were not replaced and if you move them you can see large cracks.
I am going to try another shop, the one that I usually go to for my cars. They have gone down about 4psi each since I took the car in. I am frustrated but I guess that is to be expected when working with a national chain, the service is going to be hit or miss.
Thanks again for all the info here, it has helped me a ton with upping my mpg.
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