[Diy_efi] Re: Zinc and o2 sensors

[John Smith]

Alot of modern diesels have exhaust catalysts too, just FYI. A tight engine 
will use such a paltry amount of oil that I doubt the presence of Zinc could 
make them or oxygen sensors fail prematurely. I have not seen any studies on 
it, though.

I use petroleum 15w-40 diesel oil in everything I have that can use that 
viscosity. Its a good oil for air-cooled motorcycles with wet clutches. The 
diesel oil has little or no moly which will glaze over the  clutch and wreck 
it. Petroleum "motorcycle" oil costs on average $5-7 whereas you can get a 
gallon of the other for that much. I use the oil in my cars because I can 
get it in convenient 4-gallon boxes at Costco. The most common brands I use 
are Chevron Delo 400, Shell Rotella T, and Mobil Delvac. I've heard that the 
synthetic versions of these are even better yet.

>Message: 2
>Date: Thu, 02 Feb 2006 20:52:05 -0600
>From: "Justin justin" <justin_email at lycos.com>
>Subject: [Diy_efi] Zinc and o2 sensors
>To: diy_efi at diy-efi.org
>Message-ID: <20060203025207.0CA9E3384B at ws7-3.us4.outblaze.com>
>Content-Type: text/plain; charset="iso-8859-1"
>
>I have heard that using rotella and other diesel engine oils in gasoline
>engines will make the motor last longer because of the higher zinc
>content.  I have also heard that this will kill o2 sensors and catalytic
>converters.  My application will not have cats but it will have an o2
>sensor.  Do any of you guys know if this is true or not?  The motor is
>freshly rebuilt so there really wont be any blow by.  Let me know what
>you guys think.  Thanks - Justin