Look, 0W-xx is STILL thicker at startup than 10W-xx is at operating
temperature.

If oil consumption were a concern in the time between startup and the
few minutes it takes to get to operating temperature, oil consumption
would be spec'd in quarts per start, instead of quarts per 1000 miles.

I'm sure there are some engines that have a higher usage rate until they
are warmed up, but its unlikely to affect consumption overall.


"Steve West" <whiteroseofyorkshire@postmaster.co.uk> wrote in message
news:q7unl1pjnoaq79hpp4kt7cf53q189bcqos@4ax.com...
| On Sat, 22 Oct 2005 16:52:43 -0400, "spare-me-spam" <thankya@att.not>
| wrote:
|
| >Of course, 5w-30 is no thicker than 0w-30.
| >
| >Don't work the wrong end of the number.
| >
| >Any xxW-30 is the same viscosity as any other xxW-30 at operating
| >temperature.
| >
| >
<snip>
| >|
| >
| True - but I wonder when our cars use oil - when they are cold, or
| when they are at operating temperature?
|
| I don't know the answer to this, but assumng it is the former,
| wouldn't a 5W be better for oil consumption than a 0W???
|
|