Paul,
I am not at all versed in oils but one thought I had was - what does
the API etc etc standard say. The reason I ask is that quite a while
back when restoring my A Healey I was told quite adamantly that the
use of Kurnifer (copper alloy) tubing for brakes was illegal. But I
knew Porche etc used it. So I went to the Min of Transport and they
gave me a copy of the regulations and discussed it with me. What the
regulations said was that it had to meet specific physical standards
and there was no mention of what you used to get those standards. So
I could have used newspaper as long as it held the pressure etc
etc. So maybe the API standards don't care if your cat tin rots out
quickly as long as it removes the nasties (so you have to replace
often !) Just an idle thought
By the way, the reason the crowd condemned Kurnifer etc was that
people had been using plain jane copper tubing from Canadian Tire -
the stuff for household use - and that was illegal because it did
not meet standards !
At 04:07 AM 9/22/2009, Paul Hunt wrote:
>The weight figures Barrie gave us in his correction were expressed
>as a percentage, which is the same basis as ppm, percentage is
>'parts per hundred', you just shift the decimal point. Ppm is
>usually used for very small proportions to avoid too many leading
>zeros, 1500ppm is 0.15%. I don't think '4.7mg of zinc per quart'
>would be helpful as I have never seen it expressed that way by
>anyone in the industry, it is always percent or ppm. One of the
>biggest problems I have is with Valvolene VR1 Racing which claims
>zinc at 0.14 and phosphorus at 0.13, so the highest of all found so
>far, and the closest to the 'recommended' levels, but it also claims
>to meet API SH/SJ/SL/SM and CD for 20W-50. This begs the question
>"how can it conform to SM if it has the higher levels of zinc and phosphorus?".
>
>PaulH.
>
>----- Original Message ----- From: "Max Heim" <max_heim@sbcglobal.net>
>To: "MG List" <mgs@autox.team.net>
>Sent: Tuesday, September 22, 2009 1:35 AM
>Subject: Re: [Mgs] [Mgb-v8] Kendall Oil
>
>
>>That's nice, but since the only information we have to go by is the
>>recommendation that the oil contain 1500ppm of ZDDP, the data about weight
>>is not really useful.
>>
>>If someone had told us "oh, you need 4.7mg of zinc per quart", maybe this
>>spec sheet would have been helpful. Or not, since who knows how much oil
>>weighs?
>
>_______________________________________________
>
>Support Team.Net http://www.team.net/donate.html
>
>Mgs@autox.team.net
>http://autox.team.net/mailman/listinfo/mgs
>
>http://www.team.net/archive
>
>
>No virus found in this incoming message.
>Checked by AVG - www.avg.com
>Version: 8.5.409 / Virus Database: 270.13.112/2388 - Release Date:
>09/22/09 05:51:00
Regards
Barrie
(705) 721-9060
_______________________________________________
Support Team.Net http://www.team.net/donate.html
Mgs@autox.team.net
http://autox.team.net/mailman/listinfo/mgs
http://www.team.net/archive
|