> Yes, mine are from Meyle.
> 
> Jim, your inline valve idea is great!
> 
>  Eric
>  Eric Wunrow Pictures
>   
>  303. 988. 8717
>  VW@EricWunrow.com
> 
> 
> <EW Email Sig.gif>
> 
> On Oct 14, 2015, at 8:08 AM, Jim Felder <jim.felder@GMAIL.COM> wrote:
> 
>> You are exactly right, the one-way feature on the valve is something I have
>> know VW shops to argue about. When I had a 2.1, I would test them before
>> leaving the parts place because so many of them didn't work out of the box.
>> The "good" ones didn't last long, either. I suspect you might be buying a
>> brand called "Meyle Germany" but that is just the brand name some company
>> bought, and they could be made absolutely anywhere. You might try the
>> dealers but good luck with that.
>> 
>> One of these days, all vanagon drivers are going to be using that cap
>> simply as a connection to a one-way valve from a third party, inline
>> between the reservoir tank and the overflow tank.
>> 
>> Jim
>> 
>> On Wed, Oct 14, 2015 at 2:41 AM Eric Wunrow <VW@ericwunrow.com> wrote:
>> 
>>> I'm a total rookie compared to you guys, but wanted to note I've had at
>>> least three expansion tank (blue) cap failures in 23,000, full-time miles
>>> over 26 months on the road. I believe the failures are somewhat related to
>>> how many heating/cooling cycles they're asked to do.
>>> 
>>> I only buy the German ones, and my test is if you can both suck and blow
>>> on the cap, it's toast (please keep the jokes to yourself).
>>> 
>>> My understanding is the cap should only release pressure one direction �
>>> not two.
>>> 
>>> Eric
>>> Eric Wunrow Pictures
>>> 
>>> 303. 988. 8717
>>> VW@EricWunrow.com
>>> 
>>> 
>>> 
>>> 
>>> On Sep 28, 2015, at 3:27 PM, Stuart MacMillan <stuartmacm@GMAIL.COM>
>>> wrote:
>>> 
>>>> Thanks Jim, the cap was replaced with an OEM cap when the water pump was
>>> done 13,000 miles ago, and the overflow tank doesn�t show any evidence of
>>> any spillage on or under it.  I�m thinking small leaks too, but I�d like to
>>> narrow it down.  The 2.1 has a lot more hoses than my 1.9!
>>>> 
>>>> 
>>>> 
>>>> Stuart
>>>> 
>>>> 
>>>> 
>>>> From: Jim Felder [mailto:jim.felder@gmail.com]
>>>> Sent: Monday, September 28, 2015 2:21 PM
>>>> To: Stuart MacMillan; vanagon@gerry.vanagon.com
>>>> Subject: Re: Missing coolant
>>>> 
>>>> 
>>>> 
>>>> Old hoses leak microscopic amounts of coolant. Ive had it spray onto the
>>> engine in such small quantities that it would evaporate before you could
>>> see it. Tighten hoses, replace hoses is about all you can do. But you
>>> didn't mention testing the pressure cap. That can send a good deal of
>>> coolant into the expansion tank, which can drip on the road through the
>>> overflow and you won't know it.
>>>> 
>>>> 
>>>> 
>>>> Jim
>>>> 
>>>> 
>>>> 
>>>> On Mon, Sep 28, 2015 at 4:11 PM Stuart MacMillan <stuartmacm@gmail.com>
>>> wrote:
>>>> 
>>>> Just when everything seems to be sorted out, it isn't.  Son's '87 is
>>> losing
>>>> over a quart of coolant every 400 miles, and I can't find any leaks.
>>> Rear
>>>> heater has been removed, and there is no odor from the front heater.  No
>>>> drips anywhere-engine plumbing, heads, transmission cooler, radiator, or
>>>> front heater valve.  No evidence of coolant mixing with either the
>>>> transmission fluid or engine oil, and that much coolant would certainly
>>> foam
>>>> oil.
>>>> 
>>>> 
>>>> 
>>>> I'm wondering if it's burning coolant, but in my experience failed
>>> sealing
>>>> rings in Vanagons lead to over pressurization of the system, and that's
>>> not
>>>> happening. It also runs great. I sometimes notice a faint smell of
>>> burning
>>>> coolant at the engine compartment vents, but I can't find anything
>>> dripping
>>>> on the exhaust when the system is pressurized.
>>>> 
>>>> 
>>>> 
>>>> Would investing in a UV leak detection kit tell me anything?  It would
>>> seem
>>>> losing this much coolant would show up somewhere.
>>>> 
>>>> 
>>>> 
>>>> Any ideas?
>>>> 
>>>> 
>>>> 
>>>> Stuart
>>>> 
>>> 
>> 
>