Dennis,

No, the thermostat on my oil cooler was a 4-port block similar to what we used on the air-cooled buses.   The replacement was a different 4-port block which was started seeping during its first year and failed late into its fifth. 

> On 27-Oct-2018, at 15:16, Dennis Haynes <d23haynes57@HOTMAIL.COM> wrote:
> 
> Are you referring to the thermostat for engine coolant or something for a an oil cooling system? Huge difference due to application. Now for engine coolant, yes most of the stuff out there just doesn’t work as it should nor as long as it should. The 4 port thermostat installed on my oil cooler set up was a lower cost block from "Perma-Cool". Recently I have been installing Derale. Only bad part of these is the increased size and weight. 
> 
> Dennis
> 
> -----Original Message-----
> From: Roy Nicholl [mailto:RNicholl@NBNet.nb.ca] 
> Sent: Saturday, October 27, 2018 1:56 PM
> To: Dennis Haynes <d23haynes57@HOTMAIL.COM>
> Cc: vanagon@GERRY.VANAGON.COM
> Subject: Re: The value of instrumentation
> 
> Dennis:
> 
> Your next thermostat won’t last near as long.   My original was 25 when replaced, the new one only lasted 5-years.
> 
>> On 27-Oct-2018, at 11:17, Dennis Haynes <d23haynes57@HOTMAIL.COM> wrote:
>> 
>> As some of you know I am now on the quest to hit 350K on the original engine in Fun Bus. I am at 342K now. So Thursday night driving home doing about 65 I see the oil temp climb from its usual 180-190 making it to 240 in about 10 minutes. I also see the oil pressure dropping to ~35psi. Slowed down and cooled down some. Get home check things out, the oil cooler is cold. It appears the oil cooler thermostat failed. Job for this weekend! Anyway, without gauges I never would have known.
>> 
>> BTW except for hoses this oil cooler and thermostat has been on Fun Bus from the beginning. 30 years of service.
>> 
>> Dennis
>