Re: [Mgs] OIL

["Stephen West-Fisher" <steve@coastaldatasystems.com>]

If you look at the amount of zinc in modern formulations as compared to that
in the 50's, you will find they are about the same. Zinc in oil started
rising in the late 60's, I don't recall the reason but I doubt it was due to
flat tappets.

My own take on the problems a few people started having has more to do with
modern "offshore" metallurgy or the number of overhauls the cams have
survived.  

--
Stephen West-Fisher
Coastal Data Systems
727.831.1142
http://www.coastaldatasystems.com/

-----Original Message-----
From: mgs-bounces@autox.team.net [mailto:mgs-bounces@autox.team.net] On
Behalf Of Paul Hunt
Sent: Tuesday, August 31, 2010 4:16 AM
To: Max Heim; MG List
Subject: Re: [Mgs] OIL

Both API and ACEA specifications include limits for levels of zinc and 
phosphorus:
http://www.acea.be/images/uploads/pub/070308_ACEA_sequences_2007_LD_and_HD.p
df
http://www.api.org/certifications/engineoil/pubs/upload/150916thAdd10308forp
rint-2.pdf

I've seen (but can't now find) a statement that from some official body that

modern formulations don't cause accelerated wear in older engines - not that

I believed it given the amount of empirical evidence to the contrary.
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