[Mgs] [Mgb-v8] Kendall Oil

[Paul Hunt]

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 at sbcglobal.net>
To: "MG List" <mgs at 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?