20w50 is only Thicker than 15w50 when they are Cold which is when they Need to be Thinner ~

When they are Hot they are both 50s ~

                                                        ORR ~ DeanB

On 25 Sep , 2015, at 6:13 PM, Stuart MacMillan wrote:

> Try Red Line 20w-50 synthetic oil.  It gives me a 1-2 psi boost at all rpm
> over 15w 50 because it is physically thicker.  I'd love to see 30 @ 4000,
> I'm closer to 25 when hot.
> 
> It's the idle pressure that really tells you what's going on with the
> bearings.  Below 8 when hot means it's time to plan for a rebuild or
> conversion.
> 
> Stuart
> 
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
> Robert Clemmer
> Sent: Friday, September 25, 2015 1:17 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Oil Temperature??
> 
> I have a 91 2.1 WBX that just turned 300K miles on this past trip to FL.
> The oil pressure is fine until the oil temperatures start to go on the north
> side of 220 then it starts dropping proportionately with oil temperature.
> Oil temperature starts climbing proportionately with outside air temperature
> when the temperatures are above 85.  When it is 95 or higher outside my oil
> temps can go 240-250 and pressure will drop to 30 psi at 4000 rpm.
> 
> 
> 
> Those of you have that have installed external oil coolers, how effective
> have they been?  What kind of temperature drop can I reasonably expect if I
> decide to install an external cooler when I pull this engine to "freshen it
> up"?
> 
> 
> 
> Thanks for your comments, BobC