[Shotimes] RE: [Shotimes] Driving in -10oF with 10w-30 oil

sho2go srfdude@cox.net
Sat, 25 Jan 2003 14:23:30 -0800


I disagree on the 0W, 5W part.  This is the improvement in technology that
allows lower temperature flow, and with fewer VII's (viscosity index
improver) than older oil.  This is due to improved base stocks, and
particularly synthetics.  As has been said a million times, the biggest wear
under typical use is cold start.  Now the EPA Cafe requirements have led the
manufacturers to specify a lower ultimate viscosity (20 now) which I see as
problematic; its up to the oil manufacturers to come up with a product that
will work.  An example:  Mercedes uses Mobil1 0W-40 for its factory fills;
before someone says its just big money paying MB or something equally inane,
remember MB is stuck with warranty claims if there are problems.  I suspect
this particular oil was produced with MB's specs in mind.  At any rate,
there is nothing wrong with using a 0W or 5W oil in below zero weather; it
makes perfect sense.
Mike

----- Original Message -----
From: "Ron Porter" <ronporter@prodigy.net>
To: "Steve Tatro" <stevetatro@att.net>; "'SHOtimes'"
<shotimes@autox.team.net>
Sent: Saturday, January 25, 2003 1:38 PM
Subject: RE: [Shotimes] RE: [Shotimes] Driving in -10oF with 10w-30 oil


> Since I have had the bearing issues, and have listened to some other
> opinions on the subject, I now use 10w-30 oil. I added a quart yesterday,
> when it was around 15 degrees or so. Yeah, the oil is a little thicker
when
> cold,, but the oil pump will still pump it, and I'm sure it hangs in the
> bearings a bit better.
>
> Remember that the thin oil (0w, 5w) was developed primarily for better
fuel
> economy. It is also better for producing HP as has been proven on a dyno.
> Nothing wrong with it, but IMHO in modern high-volume, low-pressure oil
> systems, 10w-30 seems like a better way to go on older engines in normal
> temps (down to zero, with maybe colder temps overnight). If I lived in
> northern Minnesota (this is hypothetical.....I would NEVER live there!!),
> thinner oil would be better for the subzero temps they see during the day.
>
> Ron Porter
>
> -----Original Message-----
> From: shotimes-admin@autox.team.net
> [mailto:shotimes-admin@autox.team.net]On Behalf Of Steve Tatro
> Sent: Wednesday, January 22, 2003 9:35 AM
> To: 'Paul L Fisher'; 'SHOtimes'
> Subject: RE: [Shotimes] RE: [Shotimes] Driving in -10oF with 10w-30 oil
>
>
> Hey, hey, hey!
>
> Don't shoot the messenger.  I'm just trying to explain where people get
> the ideas for using 10W-30.  Not endorsing the idea at all.
>
> I just checked 2 owners manuals, the one for my wife's Rodeo and the one
> for my sister's Civic.  Both indicate that 10W-30 is acceptable down to
> 0 degrees F.  I don't have a SHO manual to check.
>
> Later, and thanks for the flame.  Luckily I had my fireman's hat on.
>
> Steve Tatro
> Red/Black '93 with 164k miles
> Cincinnati, Ohio
>
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