My experience with your engine symptoms: 
http://volksweb.relitech.com/21rodbrg.htm 

Rebuild it now while you have something to rebuild, or do a Subaru or Bostig conversion before it self-destructs.  This is why there are so few 2.1 engine cores.

Stuart

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of Ryan Perry
Sent: Sunday, September 07, 2014 8:01 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Flickering Oil Light at Idle

Anybody have a good idiots guide step by step for flushing coolant system?
You know haven't changed since I bought the van three years ago... Never
done I've before... Think it's time? Prestone is the good stuff right?

I hear there is a method using a shop vac...

To bring it full circle, a cool engine is a happy engine! And a happy
engine shouldn't have flickering lights!

Later tater
Ryan
On Sep 7, 2014 10:56 PM, rjdperry@gmail.com wrote:

> Wow, nice set ups. Sounds like I definitely want a combo, I agree its good
> to see changes over time and figure for next engine good to have gauges to
> monitor the situation.
>
> So, I like the set ups lots of options. Question. Where do you, or what do
> you tie in for engine temp? If I got the oil pressure gauge, does it tie
> into that?
>
> Thanks
> Ryan
>