That article doesn't include the detail that the allowed formulation
of oils depends on the weight of the oil. So a 20W/50 oil can contain
a lot more zinc and phosphorous than a 5W/30.
Simon
On Sat, Jul 6, 2019 at 8:29 AM Chris Attias via Mgs <mgs@autox.team.net> wrote:
>
> Oil technology is changing quickly, with the change in emissions and fuel
> economy regulations and the redesign of newer engines. Additive packages are
> now designed for engines that run hotter, have tighter tolerances, and must
> be cleaner to preserve catalytic converters and oxygen sensors. It's easy to
> think in terms of individual brands that have "always been good", but the
> thing that most affects the choice of oil is the API Service Classification.
> I found a good summary of the rapid changes in oil standards here:
> http://www.pqiamerica.com/apiserviceclass.htm
> As classifications change, old oil formulations become obsolete, the
> appropriate oil for flat tappet engines has become pretty much the product of
> specialty oil companies like Royal Purple, Driven/Joe Gibbs, Red Line, Lucas,
> and Collectors Choice (Moss).
>
> Chris
>
> On Fri, Jul 5, 2019 at 10:32 PM Charley Robinson via Mgs <mgs@autox.team.net>
> wrote:
>>
>> I've been reading up on it to refresh my memory. A lot of folks just take
>> other peoples' word for it.
>>
>> CR
>>
>> On 7/5/2019 9:02 PM, Max Heim via Mgs wrote:
>>
>> Only certain weights. You have to read the labels, or usually the spec
>> sheets.
>>
>> --
>> Max Heim
>> mvheim@sonic.net
>>
>>
>>
>> On Jul 5, 2019, at 6:15 PM, FrankK <frankk12@verizon.net> wrote:
>>
>> I assume all those brands include the correct ZDDP proportions./
>>
>> From: Max Heim
>> Sent: Friday, July 5, 2019 9:02 PM
>> To: FrankK ; MG List
>> Subject: Re: [Mgs] Oil Additive
>>
>> Right, but there are other brands. I use Mobil1 15W50. Others use Royal
>> Purple, Joe Gibbs, Kendall or AMSoil brands.
>>
>>
>> --
>> Max Heim
>> mvheim@sonic.net
>>
>>
>>
>>
>> ________________________________
>>
>>
>>
>> man/options/mgs/charley38@twc.com
>
>
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