Yup- it does vent. Aarg! Choke.... So, I've ordered one from Houston, $9.95 plus tax and shipping. I only got a generic one because I was under the impression (from Joe, I think) that they were not available. ----- Original Message ----- From: "Walter" <Whalt@xxxx> To: <dmcnews@xxxxxxxxxxxxxxx> Sent: Wednesday, February 21, 2001 1:57 PM Subject: Re: [DML] Found good gas cap replacement part -- NOT > Kevin, > > I don't like the Stant #11810 because it has a venting pressure relief > spring-loaded diaphragm. Both the locking and non-locking OEM caps do not > vent at all. I bought the same Stant #11810. Without taking it out of the > package, I pressure tested the diaphragm using air. I found that it leaked > at pressures well below 1 lbs psi. The pressure was so low that I quickly > ruled it out as an acceptable cross-reference considering that the OEM caps > (particularly the non-locking variety) can hold several lbs psi. [excess quoted material trimmed]