On Sun, 12 Oct 2008 18:53:27 -0800, Jon Anderson
wrote:

clare at snyder dot ontario dot canada wrote:

And I'm running 10W40 in a 2.5 Mystique, and it loves it. How did the
escort make it's preference known?

Sounded like the lifters had trouble pumping up. Heck of a
clatter.... After switching back to 10-30, I got the same
clatter at startup, but it went away much faster, as I
assume the 10-40 worked it's way out. 2nd startup after oil
change, just a touch of clatter, hasn't done it since.
The Escort engine calls for 10-30, I just let habit take over.

10W30 or 10W40 should both be satisfactoy for that engine - the more
critical thing is the oil filter - does it have an effective
anti-drainback valve? If not, the lifters will clatter on startup just
about every time. With a good filter, they are generally quiet
regardless because they are filled almost immediately.

Also, I have a mechanic friend that told me running too
heavy an oil in modern engines can wreck rod bearings fairly
quickly, especially if one drives off immediately after startup.

Jon

Have never seen it happen. Now 20W50 at zero degrees - yup, quite
possible.

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