[Mgs] [Mgb-v8] Kendall Oil

[Max Heim]

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?

It's as if a county posted the speed limit in meters per second -- yes, it's
technically the same information, but not in a usable format (at least not
if your speedo is calibrated in mph). Hence my accusation of deliberate
obfuscation.


--

Max Heim
'66 MGB GHN3L76149
If you're near Mountain View, CA,
it's the primer red one with chrome wires


on 9/21/09 5:12 PM, Councill, David at dcouncill at msubillings.edu wrote:

> By weight is how oil and most other substances are analyzed (water being
> an exception). PPM = mg/kg
> To analyze, you have to start with a set quantity, usually done by
> weighing out an amount. And it doesn't matter from a comparative
> standpoint anyway so long as the same units are being used.
> 
> David Councill, former chemist
> 64 B
> 67 BGT
> 72 B
> 
> -----Original Message-----
> From: mgs-bounces at autox.team.net [mailto:mgs-bounces at autox.team.net] On
> Behalf Of Max Heim
> Sent: Monday, September 21, 2009 3:00 PM
> To: MG List
> Subject: Re: [Mgs] [Mgb-v8] Kendall Oil
> 
> Well, they (Kendall) have spec sheets that show zinc and phosphorus
> content
> as a percentage of weight, which is essentially useless (how much does a
> quart of oil weigh? It's sold by volume...). Are they being deliberately
> obscure?
> 
> I looked at the sheet for GT-1 High Performance Motor Oil. It said the
> 20w50
> grade ONLY had "additional" ZDDP, but it didn't say how much, and the %
> figures made no distinction between grades. At any rate, it can't be a
> significant amount, since it stated the oil still meets new car warranty
> requirements.
> 
> What we are looking for, essentially, is an oil that DOESN'T meet new
> car
> warranty requirements (i.e. too much ZDDP for the catalytic converter to
> handle). This is the problem -- who would market such a product?
> Specialized
> outfits like Brad Penn, I suppose.
> 
> --
> 
> Max Heim
> '66 MGB GHN3L76149
> If you're near Mountain View, CA,
> it's the primer red one with chrome wires