From: m35products (m35prod@optonline.net)
Date: Sun Aug 10 2003 - 10:14:59 PDT
160,000+ trouble-free miles on my Dodge/Cummins using Rotella 10-40. Nuff
said. apb
----- Original Message -----
From: "Employee@MilVeh.com" <milveh@sbcglobal.net>
To: "Military Vehicles Mailing List" <mil-veh@mil-veh.org>
Sent: Saturday, August 09, 2003 11:03 PM
Subject: Re: [MV] oil pressure and oil for diesel
> I have been advised never run 15-40 or 20-50 in a
> diesel. You may be getting away with it, but you are
> paying a hidden price according to this article:
>
> "Multi viscosity oils are one of the great
> improvements in oils, but they should be chosen
> wisely. Always use a multi grade with the narrowest
> span of viscosity that is appropriate for the
> temperatures you are going to encounter. In the winter
> base your decision on the lowest temperature you will
> encounter, in the summer, the highest temperature you
> expect. The polymers can shear and burn forming
> deposits that can cause ring sticking and other
> problems. 10W-40 and 5W-30 require a lot of
> polymers(synthetics excluded) to achieve that range.
> This has caused problems in diesel engines, but fewer
> polymers are better for all engines. The wide
> viscosity range oils, in general, are more prone to
> viscosity and thermal breakdown due to the high
> polymer content. It is the oil that lubricates, not
> the additives. Oils that can do their job with the
> fewest additives are the best.
>
> Very few manufacturers recommend 10W-40 any more, and
> some threaten to void warranties if it is used. It was
> not included in this article for that reason. 20W-50
> is the same 30 point spread, but because it starts
> with a heavier base it requires less viscosity index
> improvers (polymers) to do the job. AMSOIL can
> formulate their 10W-30 and 15W-40 with no viscosity
> index improvers but uses some in the 10W-40 and 5W-30.
> Other multigrade synthetics may not use VI improvers
> either. The full literature available from the oil
> company should include this information. Follow your
> manufacturer's recommendations as to which weights are
> appropriate for your vehicle."
>
>
> --- patrick jankowiak <eccm@swbell.net> wrote:
> > Mine oil pressure holds 65 lbs at idle cold, and 50
> > lbs at idle hot. I
> > use 15W40, stock multifuel (fuel compensator
> > bypassed) non-whistler
> > turbo.
> >
> > I have seen pressures as low as 20 psi at idle on
> > other trucks. I
> > wonder what is exactly normal.
> >
> > Patrick
> >
> > "Employee@MilVeh.com" wrote:
> > >
> > > I can tell you what mine runs, it holds 30+ psi at
> > > idle which is at 600-650 rpms with Shell's
> > industrial
> > > 30 wt.
> > >
> > > I am running stock a multi-fuel with a whistler
> > turbo
> > > and I love the engine. Although I was a little
> > taken
> > > back when a guy who owns a trucking company
> > refered to
> > > the engine as a "disposable" and "not worth
> > > rebuilding." Sure a Cat or Cummins is a better
> > > engine, but they are newer and cost a lot more
> > too.
> > > Considering the low price I paid for my truck,
> > this
> > > Continental runs like a champ and since I fixed
> > the
> > > fuel density compensator I have had zero problems
> > with
> > > it. Very happy with it and I get about 10 mpg.
> > too.
> > >
> > > --- "Fred H. Schlesinger" <fred@schlesingers.net>
> > > wrote:
> > > > What is normal? Are the gauges in the truck
> > pretty
> > > > accurate?
> > > >
> > > >
> > > >
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