Well, then I suspect the sender.  There is no way anything in the engine is going to increase the pressure from 30 to 60 while driving down the highway.  Probably not worth replacing unless it gets worse though.

 

Stuart

 

From: Mark McCulley [mailto:markmcculley@gmail.com] 
Sent: Tuesday, June 20, 2017 12:24 PM
To: Stuart MacMillan
Cc: vanagon@GERRY.VANAGON.COM
Subject: Re: high oil pressure

 

It's measured in the case. 

 

On Tue, Jun 20, 2017 at 12:12 PM, Stuart MacMillan <stuartmacm@gmail.com> wrote:

Where are you measuring the oil pressure? In the case or at a bypass plate? If bypass plate It's the filter.

Stuart

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of Mark McCulley
Sent: Tuesday, June 20, 2017 9:06 AM
To: vanagon@GERRY.VANAGON.COM
Subject: high oil pressure

An odd thing happened this past weekend while driving my stock 2.1 on a short road trip. I'd been cruising on the highway for about an hour, travelling 70-75mph, glanced at my oil pressure gauge and was surprised to see it reading 60psi. Normally it would be just below 30. I checked the oil temp gauge, it was normal, about 200F. Checked the tach, no, I wasn't in 3rd gear. I kept an eye on it, the pressure reading didn't change until I got off the freeway, then it dropped with the rpms. The next bit of travelling was on a secondary road so didn't get back up to freeway speeds, but oil pressure seemed normal for the rest of the way to our destination.
And on the return trip a couple of days later, driving the same freeway at 70-75mph, oil pressure gauge stayed just below the 30psi that I'm accustomed to seeing.

Any ideas what could have happened here?

-Mark
'87 syncro