Luke, you should go to the Vendor folder and watch the YouTube on the SAS Speedster alternative to "Why Do Speedsters Leak?"
Might be what you are looking for in a Speedster, but you will have to wait a long time to get one.
https://www.speedsterowners.com/forum/readmsg.asp?t=22877
YouTube
http://youtu.be/f6DPlQHfXic
Clint