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Using Shell Rotella T4 for flat tappet engines #4438544
06/22/17 12:10 PM
06/22/17 12:10 PM
Joined: Jun 2017
Posts: 3
West Michigan
samert111 Offline OP
samert111  Offline OP
Joined: Jun 2017
Posts: 3
West Michigan
Newby here and 1st post.

I've been using Shell Rotella T 10w30 in my pre 2000 Cadillac Northstar and 2001 Jeep Wrangler based on info from the Jeep and Cadillac forums on it's higher Zinc (ZDDP) content for these flat tappet engines. Now all I'm seeing the new Rotella T4 available but I can't seem to find out if they have reduced the Zinc content or replaced it with some other anti wear/scuffing additive and just continue to use it going forward. I really don't want to get into additives so I was hoping you all could give me some guidance on this.

Thanks in advance for your help.

Re: Using Shell Rotella T4 for flat tappet engines [Re: samert111] #4438565
06/22/17 12:32 PM
06/22/17 12:32 PM
Joined: Aug 2008
Posts: 3,231
Where the wind comes sweepin'
Reddy45 Offline
Reddy45  Offline
Joined: Aug 2008
Posts: 3,231
Where the wind comes sweepin'
Rotella T4 that is ONLY rated as CK-4 (or even CJ-4 if you find the early bottles) will have ZDDP levels around 1100-1200.

I'm not sure it exists, but if you find a DUAL rated Rotella T4 that is CK-4/SN then it will have reduced ZDDP.

Re: Using Shell Rotella T4 for flat tappet engines [Re: samert111] #4438578
06/22/17 12:43 PM
06/22/17 12:43 PM
Joined: Oct 2015
Posts: 2,798
Balearic Islands , Spain
FordCapriDriver Online content
FordCapriDriver  Online Content
Joined: Oct 2015
Posts: 2,798
Balearic Islands , Spain
There were people panicking thinking that they would massively cut back the ZDDP in Rotella but it doesn't really seem like they have, that much.
There is a VOA on BITOG of the new CK-4 Rotella T5 10W-30 and it still seems to have an ok amount of zddp?

Although for those 2 cars, you don't really need high ZDDP levels, despite being flat tappet engines, they get by ok on API SN oils, if it were a muscle car with a wild cam then yes, but a Jeep Inline 6 with a very mild cam and low valve spring pressures? don't worry about ZDDP.


1975 Ford Capri II Ghia 3000 V6, - Shell Helix HX3 20W-50 w/ 20% Rimula R4X 15W-40 HDEO.

1988 Ford Escort Mk4 Xr3i Cabrio, - Shell Rimula R4X 15W-40, w/ 30% Helix 3 20W-50.

Finnish expat in Spain.
Re: Using Shell Rotella T4 for flat tappet engines [Re: samert111] #4438611
06/22/17 01:14 PM
06/22/17 01:14 PM
Joined: Apr 2008
Posts: 12,979
Onondaga County
Miller88 Offline
Miller88  Offline
Joined: Apr 2008
Posts: 12,979
Onondaga County
The time to run high zinc oil in a 2001 Jeep wrangler may have been in 2001. I've been around Jeeps forever and I don't think I've ever seen one with a wiped cam lobe. Once the cam is work hardened, zinc does nothing additionally. And Jeep 4.0s don't run high spring pressure anyway.

It's not a 70s smallblock chevy.


18 Forester 2.5I 6M
00 Jeep Cherokee
01 Ford F-350 XL 4x4 5M
Re: Using Shell Rotella T4 for flat tappet engines [Re: FordCapriDriver] #4438660
06/22/17 01:51 PM
06/22/17 01:51 PM
Joined: Sep 2015
Posts: 6,075
Kalifornia Kollective
BrocLuno Offline
BrocLuno  Offline
Joined: Sep 2015
Posts: 6,075
Kalifornia Kollective
Originally Posted By: FordCapriDriver
There were people panicking thinking that they would massively cut back the ZDDP in Rotella but it doesn't really seem like they have, that much.
There is a VOA on BITOG of the new CK-4 Rotella T5 10W-30 and it still seems to have an ok amount of zddp?

Although for those 2 cars, you don't really need high ZDDP levels, despite being flat tappet engines, they get by ok on API SN oils, if it were a muscle car with a wild cam then yes, but a Jeep Inline 6 with a very mild cam and low valve spring pressures? don't worry about ZDDP.


OEM valve spring pressures will work well with any good high quality oil. Not to worry.

Now if you have a semi-soft Comp Cam from say 5 years ago and some Chinese made lifters with inferior hardening, I'd be all over the ZDDP numbers and prolly run Brad Penn (Penn One) or Joe Gibbs Driven oil, maybe VR-1 Silver bottle. And you'd still loose it in the end ...


Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.
Re: Using Shell Rotella T4 for flat tappet engines [Re: BrocLuno] #4438699
06/22/17 02:39 PM
06/22/17 02:39 PM
Joined: Apr 2017
Posts: 101
Michigan
Building3 Offline
Building3  Offline
Joined: Apr 2017
Posts: 101
Michigan
As for the Jeep with the 4.0L engine. I have the same engine in my 2003 Jeep Wrangler. While under the warranty I had the dealer change the oil. They used regular Pennzoil 10w-30. After the warranty period, I have been changing my own oil with the Pennzoil Ultra Platinum 10w-30. I have never had an issue with the engine, or much else with the Jeep. Both the regular Pennzoil and the Ultra in those weights pass the Chrysler Material Standard for motor oil so you should not worry about the flat tappets in the Jeep.

Re: Using Shell Rotella T4 for flat tappet engines [Re: samert111] #4438701
06/22/17 02:41 PM
06/22/17 02:41 PM
Joined: Apr 2017
Posts: 101
Michigan
Building3 Offline
Building3  Offline
Joined: Apr 2017
Posts: 101
Michigan
If you want to find out the zinc levels in the Rotella, just call the Shell technical hot line. It is on their website. I have found that all of the major oil companies are quite helpful. They staff the hot line with competent people.

Re: Using Shell Rotella T4 for flat tappet engines [Re: samert111] #4438814
06/22/17 05:23 PM
06/22/17 05:23 PM
Joined: Sep 2015
Posts: 994
PENNSYLVANIA
JeepWJ19 Offline
JeepWJ19  Offline
Joined: Sep 2015
Posts: 994
PENNSYLVANIA
Yeppers wouldn't worry about it. At least in the 4.0.

You're more likely to have the head cracking issue or the Piston skirts breaking in the 2001 4.0. oil is least of the worries


2002 Jeep WJ 4.0 | Mobil 1 HM 5w30 |
TG8A | 2.5" lift | 148k miles

Software Engineer :]
Re: Using Shell Rotella T4 for flat tappet engines [Re: Reddy45] #4438987
06/22/17 08:34 PM
06/22/17 08:34 PM
Joined: Jun 2017
Posts: 3
West Michigan
samert111 Offline OP
samert111  Offline OP
Joined: Jun 2017
Posts: 3
West Michigan
Originally Posted By: Reddy45
Rotella T4 that is ONLY rated as CK-4 (or even CJ-4 if you find the early bottles) will have ZDDP levels around 1100-1200.


The gallon bottles I just picked up had API ratings of CJ-4, CI-4 PLUS, CI-4, CH-4/SM so based on the CJ-4 rating it looks like I'm OK.

The Jeep I just picked up in April 2016 and discovered a cracked head which is common in the 2000/2001 years. When I pulled the head is was obvious the engine had been neglected and was sludged up really bad and all the lifter faces were dished so I replaced them all and pulled the oil pan to replace the rear main seal that was leaking and the pan was really sludged up also. I suspect the lifter condition was caused by extended oil change frequencies. I cleaned it out as best as possible and started using the Rotella T and changed it every 1000 miles for a couple times then went to a 3K mile frequency.

The Cadillac is a 98 Seville with only 74K miles I picked up last March with blown head gaskets so I pulled the engine and rebuilt it and replaced the fine thread head bolts with a course thread head stud which is how to fix these engines. 8 of the 32 cam followers had to be replaced due to obvious wear so I did the engine break in with the Rotella along with some Permatex camshaft break in lube.

Thanks for all the replies.

Re: Using Shell Rotella T4 for flat tappet engines [Re: samert111] #4439105
06/23/17 12:21 AM
06/23/17 12:21 AM
Joined: Oct 2015
Posts: 2,798
Balearic Islands , Spain
FordCapriDriver Online content
FordCapriDriver  Online Content
Joined: Oct 2015
Posts: 2,798
Balearic Islands , Spain
Strangely, the European equivalent of Shell Rotella T4 , which is Shell Rimula R4X , Is still CI-4/SL Rated and has 1250ppm of zddp afaik.


1975 Ford Capri II Ghia 3000 V6, - Shell Helix HX3 20W-50 w/ 20% Rimula R4X 15W-40 HDEO.

1988 Ford Escort Mk4 Xr3i Cabrio, - Shell Rimula R4X 15W-40, w/ 30% Helix 3 20W-50.

Finnish expat in Spain.
Re: Using Shell Rotella T4 for flat tappet engines [Re: FordCapriDriver] #4439111
06/23/17 12:30 AM
06/23/17 12:30 AM
Joined: Dec 2009
Posts: 26,195
Regina, Saskatchewan, Canada
Garak Offline
Garak  Offline
Joined: Dec 2009
Posts: 26,195
Regina, Saskatchewan, Canada
As an aside, that can be a bit funny, since if it has ACEA 2012 specs, those are built off of CJ-4. wink


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: Using Shell Rotella T4 for flat tappet engines [Re: samert111] #4439352
06/23/17 09:52 AM
06/23/17 09:52 AM
Joined: Jan 2015
Posts: 86
Houston, TX
ChrisGuerrero Offline
ChrisGuerrero  Offline
Joined: Jan 2015
Posts: 86
Houston, TX
Hi @samert111, we can assure you that our new T4 formulation contains the same amount of zinc (around 1200ppm). –The Shell Rotella Team

Re: Using Shell Rotella T4 for flat tappet engines [Re: samert111] #4439374
06/23/17 10:21 AM
06/23/17 10:21 AM
Joined: Sep 2015
Posts: 6,075
Kalifornia Kollective
BrocLuno Offline
BrocLuno  Offline
Joined: Sep 2015
Posts: 6,075
Kalifornia Kollective
Cool smile


Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.
Re: Using Shell Rotella T4 for flat tappet engines [Re: ChrisGuerrero] #4441944
06/26/17 11:40 AM
06/26/17 11:40 AM
Joined: Jun 2017
Posts: 3
West Michigan
samert111 Offline OP
samert111  Offline OP
Joined: Jun 2017
Posts: 3
West Michigan
Originally Posted By: ChrisGuerrero
Hi @samert111, we can assure you that our new T4 formulation contains the same amount of zinc (around 1200ppm). –The Shell Rotella Team


Thanks Chris.

Re: Using Shell Rotella T4 for flat tappet engines [Re: ChrisGuerrero] #4558888
10/29/17 10:42 PM
10/29/17 10:42 PM
Joined: Sep 2017
Posts: 16
Bay Area, CA, USA
ACHiPo Offline
ACHiPo  Offline
Joined: Sep 2017
Posts: 16
Bay Area, CA, USA
Originally Posted By: ChrisGuerrero
Hi @samert111, we can assure you that our new T4 formulation contains the same amount of zinc (around 1200ppm). –The Shell Rotella Team

That’s great info. Anything special I need to look for in CA, or will any Rotella T4 I find have ~1200 ppm zinc and ~1000 ppm phosphorous?

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