Date: Sun, 30 Dec 2012 17:52:11 -0800
Reply-To: Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM>
Subject: Re: Oil question....not the dreaded which motor oil is best
In-Reply-To: <006401cde6e1$eaecccf0$c0c666d0$@com>
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Good thing those smelly diesels are finally getting cleaned up !!
Need a retro PDF system for VW pre-chamber old fashioned non-electronic
diesels.
Yours does not need urea fluid ?
scott
turbovans
On 12/30/2012 3:03 PM, Kent Christensen wrote:
> Re: Labeling is now changing and in the Diesel world we have post and pre
> 2007 oil requirements. Most of the pre 2007 is disappearing. Some of the new
> stuff brags about "emissions system performance". The real early heavy duty
> Diesel oils can affect the catalyst and O2 sensors. (Dennis)
>
>
> Your knowledge here needs updating ...
>
> ESP = emission systems protection
>
> There's no "bragging" to it.
>
> The system at risk with the older oils is the diesel particulate
> filter--which is not the same thing as the catalytic converter.
>
> The new oils are low ash so as not to leave excessive deposits in the DPF.
> What deposits there are are periodically burned off by injection of fuel
> into the filter.
>
> On my Mercedes GL320 CDI there's a decal under the hood warning to never put
> ANY QUANTITY of non conforming motor oil in the engine. I carry a couple
> spare quarts.
>
> Someday I'm going to have to pay for a replacement DPF and it's going to be
> expensive and I'm for sure not going to do anything to hasten its demise.
>
> The DPF requirement is a great thing, as unfiltered diesel exhaust is quite
> lethal. I've on occasion when messing with trailer hookup noted that the
> smell of DPF filtered exhaust is mostly that of steam--I call it
> "laundromat." There's zip/zero/nada traditional diesel smell nor is there
> black soot all over the exhaust outlets or the rear of the car.
>
> This has also nothing to do with "heavy" oil, as generally speaking these
> days lower viscosity oils are specified, mostly to reduce friction and
> increase fuel mileage since there are gov't economy requirements. The
> Mercedes 229.51 spec oil I use is Mobil 1 Formula M 5W-40 and in terms of
> "heavy" only the 40 is meaningful and if one studies up on Mobil 1 you'll
> find very little difference between 40 and 50, but I still use good old
> 15W-50 Mobil 1 in my aircooled Vanagon.
>
>
> Kent Christensen
> Albuquerque
> '81 Vanagon, rubber floors, vinyl seats
>
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