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#4720998 - 04/08/18 09:57 PM LSPI frequency and TEOST-33
JAG Offline


Registered: 10/23/05
Posts: 4667
Loc: Fredericksburg, VA
Low speed pre-ignition (LSPI) frequency and whether the oil can pass the TEOST-33 test are affected by whether the detergents used contain calcium or magnesium. Sodium was also tested. That is not new information to many of us. What I found interesting is that it also matters whether the detergent is overbased or it is low based/neutral. It also matters whether the detergent is a sulfonate or a phenate. They didnít test it but it also probably matters whether it is a salicylate. I also found it interesting how many of the formulations failed the TEOST-33 test. See toward the end of the patent in the link for the test results.

http://www.freepatentsonline.com/y2017/0015927.html

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#4721009 - 04/08/18 10:08 PM Re: LSPI frequency and TEOST-33 [Re: JAG]
bbhero Offline


Registered: 03/20/15
Posts: 4398
Loc: Virginia
Great find JAG. And these people obviously work for Afton out of nearby Richmond Va. Close to you and me.
_________________________
Nissan Altima 3.5 Coupe
Havoline Pro DS 5w30 Federated Auto 4612ex
"Treat your family like your friends and treat your friends like your family."

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#4721013 - 04/08/18 10:12 PM Re: LSPI frequency and TEOST-33 [Re: JAG]
JAG Offline


Registered: 10/23/05
Posts: 4667
Loc: Fredericksburg, VA
Indeed, bhero. Iíd love to go on a tour of Aftonís facilities.

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#4721144 - 04/09/18 04:56 AM Re: LSPI frequency and TEOST-33 [Re: JAG]
bbhero Offline


Registered: 03/20/15
Posts: 4398
Loc: Virginia
One interesting note I found in this was how titanium was also introduced to help limit LSPI events as well. Interesting enough the new version of Valvoline Advanced full synthetic has titanium in it has well. Looks to be Valvoline got their additive package from Afton.
_________________________
Nissan Altima 3.5 Coupe
Havoline Pro DS 5w30 Federated Auto 4612ex
"Treat your family like your friends and treat your friends like your family."

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#4721162 - 04/09/18 05:35 AM Re: LSPI frequency and TEOST-33 [Re: JAG]
SonofJoe Online   content


Registered: 07/23/16
Posts: 1013
Loc: Europe
Oh dear! Still making basic, elementary mistakes? (puns fully intended)...

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#4721239 - 04/09/18 07:40 AM Re: LSPI frequency and TEOST-33 [Re: JAG]
JAG Offline


Registered: 10/23/05
Posts: 4667
Loc: Fredericksburg, VA
Titanium and tungsten additives, by Afton: http://www.freepatentsonline.com/y2017/0015928.html

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