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Date:         Sun, 17 Jan 2016 09:58:27 -0500
Reply-To:     Dennis Haynes <d23haynes57@HOTMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Dennis Haynes <d23haynes57@HOTMAIL.COM>
Subject:      Re: FW: Mobil 1 0W 50 any one use it yet
Comments: To: mcneely4@COX.NET
In-Reply-To:  <20160117030809.WWVN8.200437.imail@fed1rmwml106>
Content-Type: text/plain; charset="UTF-8"

For the Waterboxer I strongly suggest an oil temperature gauge to with the oil pressure gauge. Driving accordingly for cold oil can also help to lengthen engine life. More importantly if driving along and you see oil pressure falling you will want to know why. Is something happening mechanically or is the temperature climbing due to unusual conditions even with that add on cooler. Maybe the thermostat for the cooler is failing. Maybe that fan isn’t coming on.

One thing about oil coolers and thermostats for them is that in winter they will add significantly to the warm up time for the oil. These thermostats do not cut off flow through the cooler, they simply allow the oil to bypass the cooler and as such some colder oil will flow in. Also, many leave the stock oil cooler in place thinking this will provide faster oil warm up. To some extent this will but it becomes a conflict with the coolant. Also, most oil cooler thermostats begin opening (actually closing the bypass) at 160 and are fully closed ~180. The engine coolant in that factory heat exchanger will try to heat the oil to the cooler to the coolant temp which should be 180 to 190. If you really want this benefit the factory cooler should be placed after the sandwich adapter so it can heat that over cooled oil before going back into the engine.

A problem with this set up is that when the outside is really cold the oil in the cooler will remain at a very high viscosity. If the thermostat closes the bypass and that oil can’t flow the oil pressure will drop. Not having the that oil heat exchanger lets the thermostat actually respond to engine oil temperature demand so with it taking longer for the oil to heat up the thermostat responds differently and won’t close the bypass until the engine really needs it and operating slowly the oil in the cooler will heat up if the cooler is really needed.

Dennis

-----Original Message----- From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of Dave Mcneely Sent: Sunday, January 17, 2016 3:08 AM To: vanagon@GERRY.VANAGON.COM Subject: Re: FW: Mobil 1 0W 50 any one use it yet

I have not installed an oil temperature gauge. But, my tencentlife cooler keeps the pressure up to around 10 psi at idle after extended high temperature highway runs, ambient temperature above 100 F. Before the cooler, idle psi would drop to under 5 psi, and sometimes the warning light would light up when dropping to idle after such runs. mcneely

---- Robert Clemmer <n51219@COMCAST.NET> wrote: > Dennis, > > You mention Florida trips. I'm curious how high your oil temperatures get on long cruises at high speed in high temperature conditions? My oil temperature will climb to 240-250 when it is 90+ degrees outside and pressure at those temperatures will fall to 30-35 lb. I'm am trying to learn if an external cooler really removes that much heat. My bus is just a 2.1 wbx with the factory cooler with 304k miles and still going strong. > > BobC > > > > > > -----Original Message----- > From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of Dennis Haynes > Sent: Friday, January 15, 2016 10:49 PM > To: vanagon@GERRY.VANAGON.COM > Subject: Re: Mobil 1 0W 50 any one use it yet > > Are you using your van as a winter daily driver? Temperatures in the teens? If not than just stay with the 15w-50. As a test I have been using Fun Bus this past week as a daily driver. Tuesday morning was 15F according to the thermometer at my house. The engine has the 15w-50 used for the last two Florida trips. I have oil temperature and pressure gauges. On the under 20F days the oil pressure did go above 75 and at one point almost hit 90 psi. From my house I approach a highway in about a mile. On these colder days pressure started dropping to normal ranges in 3-4 miles and the engine (coolant) was up to temperature in 5-6 miles. As I have an external oil cooler (with a thermostat) the oil does take a bit longer to warm up and on these trips never went over 165F. Oil pressure was still ~25psi at idle. > > Point is that unless you need to start it regularly with temps in the teens or lower the 15w-50 will work. I will be changing the oil this week to the 5w-50 to experiment and see how well it work when the weather gets warmer. Keep in mind that the engine in Fun Bus does now have 290K on it. > > Dennis > > > -----Original Message----- > From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of Eric Caron > Sent: Thursday, January 14, 2016 11:02 PM > To: vanagon@GERRY.VANAGON.COM > Subject: Mobil 1 0W 50 any one use it yet > > Denis and others, > > Did I read earlier that there is a Mobil 1 0W 50? I’m using the 15W 50. > > I’m hoping to hear some reports before I do my next oil change. > > Eric Caron > 85 GL Auto Westfalia > in Chilly VT

-- David McNeely


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