Date: Wed, 10 Aug 2022 08:41:15 -0700
Reply-To: Stacy Schneider <vwcrewman@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Stacy Schneider <vwcrewman@GMAIL.COM>
Subject: Re: Engine oil
In-Reply-To: <CAK9Aa+mYrmZ+Mz6Z+kOst-TwqnUManaP==P0D+VXaZp-fu11Jg@mail.gmail.com>
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The most important requirement of oil is proper quantity and regular
changes. I don't think there is anything noticeable that we the lay people
would notice with proper maintenance.
Stacy
On Tue, Aug 9, 2022 at 3:01 PM Bruce Todd <beeceetee@gmail.com> wrote:
> Lots of opinions on oil - that is for sure. For a brief period I was using
> 10 W 60 synthetic but last summer after getting some work done on my engine
> at a well known VW shop - one of the mechanics showed me a sample of the
> oil which did not look uniform and told me they changed it back to 20W 50
> non synthetic. This place has a good reputation and services both Audis
> and VWs including Vanagons and has lots of synthetic oil available - so it
> is curious why they went back to using conventional on my Syncro. In fact
> any place I have taken my van for servicing where the oil has had to be
> changed - it has always been conventional oil that it has been refilled
> with. Perhaps a cost savings measure - or perhaps what is best for these
> old motors?
>
> Bruce
>
> On Sun, Aug 7, 2022 at 9:15 AM OlRivrRat <OlRivrRat@comcast.net> wrote:
>
> > I always get curious, when I hear of NonSynthetic 20w50 being
> used
> > in
> >
> > a Vanagon H2OBoxer Eng, as to what prompts the user to do that ~
> >
> >
> >
> > > On 7 Aug , 2022, at 9:41 AM, Dan N <dn92610@GMAIL.COM> wrote:
> > >
> > > thank you Dennis,
> > >
> > > I wonder if there's something to do with the oil grade they recommend
> > with
> > > the RPM of the engines... On my ML430 suv it's about 2K rpm at 70mph...
> > On
> > > the vanagon it's 4K at 70mph. At 55mph it's about under 2K rpm for the
> > suv
> > > and about 3K rpm for the vanagon. The suv uses 5W40 synthetic, I use
> > > non-synthetic 20W50 on the vanagon.
> > >
> > > On Sun, Aug 7, 2022 at 7:37 AM Dennis Haynes <d23haynes57@hotmail.com>
> > > wrote:
> > >
> > >> Recently there was some discussion on engine oil. So I'll add more
> > >> thoughts to the discussion.
> > >> Recently I acquired a 2022 GMC Sierra Crew Cab, Denali. Has the 6.2L
> and
> > >> 10 speed Allison. Will soon be having its 1st oil change done. Part of
> > GM's
> > >> plan to improve fuel economy is the use of low viscosity lubricants.
> The
> > >> engine calls for 0w-20, the transmission use special low viscosity
> ATF,
> > and
> > >> even the axles call for 75w-80. I having a hard time wrapping my head
> > >> around using the 0w-20 oil for an engine of this horsepower. To add to
> > the
> > >> confusion the hopped version of this engine for the Corvette calls for
> > >> different oil.
> > >>
> > >> So doing some research I learned something that I never gave thought
> to.
> > >> Engine oils contribution to an engine going into pre-ignition. Makes
> > sense
> > >> given some thought. There is always some oil on the cylinder walls and
> > some
> > >> part becomes part of the combustion process. For the Waterboxer this
> is
> > >> relevant as there is also some oil laying in the bottom of the
> cylinder.
> > >> For my engine it has active fuel management, (AFM). Glorified cylinder
> > >> deactivation. Under certain load and speed conditions the cylinders
> get
> > >> deactivated via a dance of turning off the injectors, and
> de-activating
> > the
> > >> valves. In this state oil that gets past the rings isn't burning off.
> > >>
> > >> GM addresses this as part of their Dexos specifications. The oils
> > >> contribution to detonation is also of concern for engines that are
> > direct
> > >> injected and turbo charged.
> > >> So to add to the confusion there is Dexos 1, generation 1, 2, and now
> 3,
> > >> and Dexos 2. Now one would think that Dexos 2 would be the later or
> > >> improved spec. It is not. Dexos 2 is for europeant vehicles which
> > addresses
> > >> that many European vehicles are Diesels. The performance for spark
> > ignition
> > >> engines is actually lower. The GM specs also include other ratings
> that
> > >> also include fuel economy. Oils that carry the Dexos 1, generation 2
> or
> > 3
> > >> rating is limited.
> > >>
> > >> How does this apply to us? There are a number of folks that think
> heavy
> > >> duty Diesel oils are a better choice for the Waterboxer. The
> > pre-ignition,
> > >> detonation control is just another consideration for using oils that
> are
> > >> designed for gasoline, not diesel engines. Pre-ignition is the cause
> of
> > >> most melted pistons and a contributor to rod bearing failures. For the
> > >> Vanagon it is of significant concerns as due to all the other noise
> and
> > >> design of the engine it is not easily heard when it occurs.
> > >>
> > >> Dennis
> > >>
> >
>
--
1989 Swedish Tristar with Aluminum gates and Atiwe 16" Wheels.
Oldest son is an Eagle scout.
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