Fwd: Re: [Vwdiesel] Mixing Synthetic & Dino Oils

[Gerry Wolfe]

The post does not state which Diesel engine you have.  Older NA and TD are 
supposed to want oils meeting CD level.  My query to Mobil tech support 
recommended not using Mobil 1 in a diesel for longterm use, any engine 
(soot dispersion issues).  I am sure that short-term is no problem, altho I 
would personally choose a diesel-rated dino oil since it exceeds the Mobil 
1 specs for diesel, and is a bunch cheaper.  No idea about the Chevron 
Delo, it is not available here in the Great White North, so I have no 
comments about it.

I change every 4 months --  Rotella X-TLA 15w40 (dino) during warm weather, 
Delvac 5W40 (synth) over the winter -- here in Toronto it costs 4X as much, 
rarely available.

>Delivered-To: vwdiesel at www.audifans.com
>From: "Lee Hillsgrove" <hillsgrove at tds.net>
>To: "VW Diesel List" <vwdiesel at vwfans.com>
>Subject: Re: [Vwdiesel] Mixing Synthetic & Dino Oils
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>Date: Sun, 24 Mar 2002 15:43:20 -0500
>
> >I have been running using Mobil 1 10W-40 the last year or so. However, I
> >still have a case of Dino (Chevron Delo) in the garage. Yesterday morning,
> >in the dark (prior to getting my caffeine fix) I grabbed a quart of oil
>from
> >the wrong shelf and inadvertently put in a quart of the non-synthetic into
> >the car. I didn't notice until that afternoon when I went to throw away the
> >empty bottle.
> >
> >So the question is, is this bad to have mixed synthetic and non-synthetic?
> >
> >Should I drain my oil and refill immediately?
> >
>
>
>   Wow, I didn't get this message until today. Slow e-mail.
>
>  Is it bad to have mixed the oils? No, probably not. Modern synthetics like
>the Mobil 1 are OK to mix with dino oils.
>
>Should you drain and refill? IMO, Yes.
>Mobil 1 *gasoline* oil is only rated at CF. Better oils rated at CH-4 are
>readily available. Why use something rated for less?
>  I'd be more comfortable using Delvac 1300, Shell Rotella T, or Chevron Delo
>400 dino oil. If you want to run synthetic, diesel-specific oils are
>available, too.
>  Just my $.02
>
>   Lee
>   Oo-v-oO
>   PP-ASEL
>   KB1GNI
>
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