Those two articles disagree, the first says that SM/CK4 and 1000+ppm zddp
can't all exist together. The second says that Rotella T5 10w30 (which is
SM/CK4) is certified by Ford...
-Curt
On Saturday, February 27, 2021, 11:36:46 AM EST, Rick Knoble via Mercedes
<mercedes@okiebenz.com> wrote:
Peter brings up a good point. I *think* that is why Ford will not certify
certain diesel oils for use in it's powerstroke engines. Look for something
that meets Ford specifications.
https://www.noln.net/articles/2353-clearing-up-ford-s-diesel-oil-statement
https://www.enginebuildermag.com/2017/09/three-shell-rotella-engine-oils-meet-ford-diesel-engine-oil-specification/
Rick
From: mercedes@okiebenz.com
Sent: February 27, 2021 7:45 AM
To: mercedes@okiebenz.com
Reply-to: mercedes@okiebenz.com
Cc: psf...@earthlink.net
Subject: Re: [MBZ] Oil for OM602
One thing to remember is that the 60x engines all have flat tappets (actually
the bucket, but same issue), and that modern automotive systems DO NOT have
flat tappets, they are almost universally roller tappets.
As a result, the zinc phosphates and zinc triphenylphosphates that provide
start up lubrication have been removed from the oil, they are both a problem
for disposal/environment and expensive, and if you don't use oil containing
them, you will have tappet and cam wear greatly increased.
This is a huge problem in the hot rod community, as they use mostly Chevy 350
engines (and some Fords) with flat tappets, and the change in the oils has done
a lot of damage.
That's why I use Mobil 1 Truck and Turbo in all the diesels, and probably
should in the TE (I think the cam may be gone in that car anyway). Formulated
for flat tappets, since Cummins still uses them among other things.
Soot holding capacity is also an issue,
One oil change won't wreck your engine, but I'd no make a practice of using
anything not correctly rated very long.
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