whenever possible avoid ALL Meyle products.
Definitely on the weak end of the scale, IMO.

re your comment on the blue caps.
Supposedly it's a 'regular' pressure cap with coolant recovery valve.

However..
they don't always release pressure when they should ..seen that lots (
if they did, expansion tanks would not puff up sometimes )
'Usually' the 'suck-back- feature works .

yes, excess pressure should be vented to the overflow tank, but they
don't always work that way like they should, in my experience.

Scott

On 7/20/2016 5:57 PM, Stan Shapiro wrote:
> The brand tank that I used was MEYLE.  Haven’t checked for combustion gases yet.   I have replaced these tanks over a period of about 20,000 miles.    Runs fine.  No symptoms of bad head gasket.    I guess I don’t fully understand the blue cap on the expansion tank—I would think that any excess in pressure in the expansion tank (gas or fluid) would be vented into the overflow tank.
>
>
>
> Thanks
>
> stan
>
>
>
> From: kenwilfy@gmail.com [mailto:kenwilfy@gmail.com] On Behalf Of kenneth wilford (Van-Again)
> Sent: Wednesday, July 20, 2016 2:35 PM
> To: Stan Shapiro
> Cc: Vanagon List
> Subject: Re: Expansion tanks
>
>
>
> Have you checked for combustion gasses getting into the coolant?  What brand of tanks are you getting?
>
>
>
> Ken
>
>
>
> On Wed, Jul 20, 2016 at 5:27 PM, Stan Shapiro <mail@stanshapiro.com> wrote:
>
> I am on my 4th NEW coolant expansion tank in about a year.  They leak at the
> seam.  Any suggestions for a replacement?    I have seen the metal tanks,
> that I am sure are bullet proof, but I do like the ability to check the
> coolant level in the expansion tank just by looking through the plastic.
>
> Suggestions?
>
>
>
> stan
>
>
>
>
>
>
>