[DML] Re: Volvo PRV Oil Weight Spec (10W30)

["content22207" <brobertson@xxxxxxxxxxxx>]

Original Volvo PRV oil spec was 10W40. They recommended such for a
decade or so.

In late 1984 Volvo issued a Technical Service Bulletin making 10W30
the new recommended oil spec, retroactive to the beginning of PRV usage:

"For gasoline engines from model year 1985, the SAE 10W40 has been
deleted from the oil specification chart. Compared to other
viscosities, approved by Volvo, the SAE 10W40 could produce more
deposits in the engine.

The new specification is also recommended for all earlier models."

TSB #21112: Engine [B28F] - Excessive Camshaft/Rocker Arm Wear

40 weight was gumming up oil passages in the rocker arms (imfamous
"camshaft problem", endemic to B27 *AND* B28).

Bill Robertson
#5939

>--- In dmcnews@xxxxxxxxxxxxxxx, DMCVIN6683 <dmcvin6683@xxxx> wrote:
> 
> Try 5w50 for the cold weather.
> 
> Mark V
> 
> 
> On Wednesday, December 1, 2004, at 11:35  PM, Videobob Moseley wrote:
> 
> >
> >
> > That is a good point Mark, I need to check to see if my fans are 
> > coming on
> > all the time or maybe to early.
> >
> > .....and yet, the "which oil should I use?" question persists.
> > According to this months DMCH Catalog AKA "Delorean's Magazine" (at 
> > $8.95
> > per issue)
> > suggests that 20/50 be used in tempatures over 14 degrees.
> > I am Texas ya'll, it don't get that cold here in Dallas that often.
> >
> > I'll just have to deal with it.
> > - VB
> >
> >
> >
> >
> >> From: DMCVIN6683 <dmcvin6683@xxxx>
> >> Reply-To: dmcnews@xxxxxxxxxxxxxxx
> >> To: dmcnews@xxxxxxxxxxxxxxx
> >> Subject: Re: [DML] Re: DeLo's In Year 'Round Use
> >> Date: Wed, 1 Dec 2004 19:51:47 -0600
> >>
> >>
> >>
> >> Well if it is getting cold where it is almost freezing you should not
> >> be using 20/50. Putting a switch on your fans will do nothing for
> >> helping your car warm up faster, your car has to be hot first before
> >> the fans turn on.
> >>
> >> Mark V
> >>
> >>
> >> On Wednesday, December 1, 2004, at 07:09  PM, Videobob Moseley wrote:
> >>
> >>>
> >>>
> >>>
> >>> Living in Texas, it is easy to use the car year round.
> >>> However, warming it up takes for ever.
> >>> I am considering putting an on/off switch on my fans to help
warm it 
> >>> up
> >>> quicker.
> >>> It was really cold this morning, almost freezing...
> >>> Yesterday I changed my oil and put in Castroil GTX 20/50, and a 
> >>> bottle
> >>> of
> >>> Lucus.
> >>> This morning when I tried to start the car, the engine that normally
> >>> pops on
> >>> in one turn
> >>> spun round and round and wouldn't start.
> >>> I let it sit for a second and then let it spin some more and it 
> >>> slowly
> >>> putterd on.
> >>> It was fine after that, but that is the first time I have seen it do
> >>> that.
> >>>
> >>> I drive my car all year round but have learned to avoid wet days.
> >>> Since I have about 7 vehicles to choose from I might as well spare 
> >>> it.
> >>>
> >>> After my experience on wet roads with this car, I would avoid icy
> >>> situations
> >>> at all costs.
> >>> So I suppose that if I lived in a snowy area I would just garage the
> >>> car for
> >>> a few months.
> >>> Drive some other kind of dissposable car in the winter, like a
Vette.
> >>> ;P
> >>>
> >>> - Videobob
> >>
> >>
> >>
> >>
> >>
> >>
> >> To address comments privately to the moderating team, please address:
> >> moderators@xxxx
> >>
> >> For more info on the list, tech articles, cars for sale see 
> >> www.dmcnews.com
> >>
> >> To search the archives or view files, log in at
> >> http://groups.yahoo.com/group/dmcnews
> >> Yahoo! Groups Links
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >
> >
> >
> >
> >
> >
> >
> > To address comments privately to the moderating team, please address:
> > moderators@xxxx
> >
> > For more info on the list, tech articles, cars for sale see 
> > www.dmcnews.com
> >
> > To search the archives or view files, log in at 
> > http://groups.yahoo.com/group/dmcnews
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >








To address comments privately to the moderating team, please address:
moderators@xxxxxxxxxxx

For more info on the list, tech articles, cars for sale see www.dmcnews.com

To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews 
Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/dmcnews/

<*> To unsubscribe from this group, send an email to:
    dmcnews-unsubscribe@xxxxxxxxxxxxxxx

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/