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Zinc and Phosphorus Levels in UOAs #4681392
03/01/18 11:08 AM
03/01/18 11:08 AM
Joined: Sep 2015
Posts: 873
California
mbacfp Offline OP
mbacfp  Offline OP
Joined: Sep 2015
Posts: 873
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 11:12 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 11:50 AM
03/01/18 11:50 AM
Joined: Feb 2015
Posts: 2,199
Slovenia EU
Kamele0N Offline
Kamele0N  Offline
Joined: Feb 2015
Posts: 2,199
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 11:51 AM.

2011 Hyundai i30 1.4 CVVT Shell Helix Ultra 5w40
1997 Toyota Landcruiser KZJ95 3.0 TD Shell Rimula R6M 10w40
Re: Zinc and Phosphorus Levels in UOAs [Re: mbacfp] #4681420
03/01/18 11:58 AM
03/01/18 11:58 AM
Joined: Sep 2015
Posts: 873
California
mbacfp Offline OP
mbacfp  Offline OP
Joined: Sep 2015
Posts: 873
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 12:11 PM
03/01/18 12:11 PM
Joined: Feb 2015
Posts: 2,199
Slovenia EU
Kamele0N Offline
Kamele0N  Offline
Joined: Feb 2015
Posts: 2,199
Slovenia EU
Api Cy... HDEO

Api Sy + whatever... PCMO

Cheers1


2011 Hyundai i30 1.4 CVVT Shell Helix Ultra 5w40
1997 Toyota Landcruiser KZJ95 3.0 TD Shell Rimula R6M 10w40
Re: Zinc and Phosphorus Levels in UOAs [Re: Kamele0N] #4681619
03/01/18 05:15 PM
03/01/18 05:15 PM
Joined: Jul 2015
Posts: 4,624
Down Under
SR5 Offline
SR5  Offline
Joined: Jul 2015
Posts: 4,624
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.


Penrite Vantage 10W40 SN & A3/B4 + Wesfil-Cooper Z154
Re: Zinc and Phosphorus Levels in UOAs [Re: Kamele0N] #4681713
03/01/18 07:38 PM
03/01/18 07:38 PM
Joined: Dec 2009
Posts: 25,368
Regina, Saskatchewan, Canada
Garak Offline
Garak  Offline
Joined: Dec 2009
Posts: 25,368
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 10:53 AM
03/03/18 10:53 AM
Joined: Jun 2017
Posts: 165
New York
jeff78 Offline
jeff78  Offline
Joined: Jun 2017
Posts: 165
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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