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Zinc and Phosphorus Levels in UOAs #4681392
03/01/18 10:08 AM
03/01/18 10:08 AM
Joined: Sep 2015
Posts: 884
California
mbacfp Offline OP
mbacfp  Offline OP
Joined: Sep 2015
Posts: 884
California
Hello all,

In looking at my past oil analysis results, I was curious about Zinc and Phosphorus levels. See link for UOA below.

https://www.bobistheoilguy.com/forums/ub...owe#Post4355305

My UOA with Valvoline 5w-40 (CJ-4) showed Zinc at 1,340 and Phosphorus at 1,065

My UOA with Delvac 5w-40 (CJ-4) showed Zinc at 977 and Phosphorus at 878.

Both are CJ-4 so why did Delvac show lower numbers? Is Zinc and Phosphorus sacrificial? My Delvac 5w-40 is from 2016 so I doubt they bottled CK-4 in it. Wear numbers are good with Delvac especially since I towed vs not towed on Valvoline. What do you all think?


Last edited by mbacfp; 03/01/18 10:12 AM.

2014 F-550 PSD..........M1 Delvac ESP 5w-40 + OEM
2018 Dodge Charger SRT Hellcat
2012 Toyota Sienna LTD 3.5L V6
2003 Dodge Durango R/T 4x4 5.9L V8
Re: Zinc and Phosphorus Levels in UOAs [Re: mbacfp] #4681415
03/01/18 10:50 AM
03/01/18 10:50 AM
Joined: Feb 2015
Posts: 2,362
Slovenia EU
Kamele0N Offline
Kamele0N  Offline
Joined: Feb 2015
Posts: 2,362
Slovenia EU
Has delvac both SN & CJ-4 certificates? If so...that is your answer for why lower ZDDP levels...

Last edited by Kamele0N; 03/01/18 10:51 AM.

2008 Toyota Yaris 1ND-TV 1.4 D4-D Elf FullTech FE 5w30
1997 Toyota Landcruiser KZJ95 3.0 TD Shell Rimula R6M 10w40
Re: Zinc and Phosphorus Levels in UOAs [Re: mbacfp] #4681420
03/01/18 10:58 AM
03/01/18 10:58 AM
Joined: Sep 2015
Posts: 884
California
mbacfp Offline OP
mbacfp  Offline OP
Joined: Sep 2015
Posts: 884
California
I checked the current CK-4 spec sheet and both have SN. Found both CJ-4 spec sheets and both don't meet SN. Thanks for the idea.


2014 F-550 PSD..........M1 Delvac ESP 5w-40 + OEM
2018 Dodge Charger SRT Hellcat
2012 Toyota Sienna LTD 3.5L V6
2003 Dodge Durango R/T 4x4 5.9L V8
Re: Zinc and Phosphorus Levels in UOAs [Re: mbacfp] #4681434
03/01/18 11:11 AM
03/01/18 11:11 AM
Joined: Feb 2015
Posts: 2,362
Slovenia EU
Kamele0N Offline
Kamele0N  Offline
Joined: Feb 2015
Posts: 2,362
Slovenia EU
Api Cy... HDEO

Api Sy + whatever... PCMO

Cheers1


2008 Toyota Yaris 1ND-TV 1.4 D4-D Elf FullTech FE 5w30
1997 Toyota Landcruiser KZJ95 3.0 TD Shell Rimula R6M 10w40
Re: Zinc and Phosphorus Levels in UOAs [Re: Kamele0N] #4681619
03/01/18 04:15 PM
03/01/18 04:15 PM
Joined: Jul 2015
Posts: 4,657
Down Under
SR5 Offline
SR5  Offline
Joined: Jul 2015
Posts: 4,657
Down Under
Originally Posted By: Kamele0N
Has delvac both SN & CJ-4 certificates? If so...that is your answer for why lower ZDDP levels...

For API SN the Phos & Zinc levels are restricted for 30 & 20 grade oils and lower, but for 40 grades and higher there is no restriction.

I'm using Penrite 10W40 and it has 1200 ppm zinc and it's rated API SN.


---------------------------------------------------------------------------------
Castrol GTX Ultraclean 15W40 A3/B3 + Wesfil-Cooper Z154
Re: Zinc and Phosphorus Levels in UOAs [Re: Kamele0N] #4681713
03/01/18 06:38 PM
03/01/18 06:38 PM
Joined: Dec 2009
Posts: 26,263
Regina, Saskatchewan, Canada
Garak Offline
Garak  Offline
Joined: Dec 2009
Posts: 26,263
Regina, Saskatchewan, Canada
Originally Posted By: Kamele0N
Api Sy + whatever... PCMO

Here, it would be C first, then S, which allowed the phosphorus waiver for ILSAC grades at the time.


Plain, simple Garak.

2008 Infiniti G37 - Shell ROTELLA T6 Multi-Vehicle 5w-30, NAPA Gold 7356
1984 F-150 4.9L - Quaker State GB 10w-30, Wix 51515
Re: Zinc and Phosphorus Levels in UOAs [Re: mbacfp] #4683073
03/03/18 09:53 AM
03/03/18 09:53 AM
Joined: Jun 2017
Posts: 172
New York
jeff78 Offline
jeff78  Offline
Joined: Jun 2017
Posts: 172
New York
Originally Posted By: mbacfp
Both are CJ-4 so why did Delvac show lower numbers?


CJ-4 requires that phosphorous levels be between 600 and 1200 ppm, so the Rotella and Delvac are both in spec.

They're different to each other because they're different oils.


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