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Time vs. Miles for OCI circumstance #4455150
07/10/17 09:28 AM
07/10/17 09:28 AM
Joined: Sep 2016
Posts: 53
DFW, TX
Ddubya Offline OP
Ddubya  Offline OP
Joined: Sep 2016
Posts: 53
DFW, TX
Assuming I am using high quality oils (Castrol Edge EP, PPHM, or full syn MaxLife for the Caddy DTS / Castrol Magnatec Syn, PP, or PUP for the Mazda) and filters (Napa Gold, Platinum, or Fram Ultra), is there any real danger of exceeding a 1 year OCI (max would be 18 months) if I am under 10K miles between changes? Neither cars are under warranty, and I have been changing the Mazda at 7K miles and the Cadillac once per year (which equaled about 8K miles and still about 25% on the OLM). I'm thinking I could stretch the Mazda out to 1 year or 8K miles (whichever comes first) and the DTS to 10K miles or 18 months without any real concerns. Neither cars burn oil, but the Cadillac does have a minor version of "the Northstar leak", which means it leaks a little while hot/warm, but none at ambient temperatures.

The Mazda takes 5.5qts and the Cadillac 7.5qts as an FYI.

I do not currently plan on getting UOAs on either car, but I am open to the idea. I appreciate your comments/thoughts. Thank you.

Last edited by Ddubya; 07/10/17 09:38 AM.

2017 Volvo S60 Inscription (Castrol Edge Syn)
2010 Mazda 6i Touring (PP or Castrol Magnatec Syn)
2013 Ford Explorer V6 (company car) (Kendall Syn Blend)
2009 Caddy DTS (Castrol EP)
Re: Time vs. Miles for OCI circumstance [Re: Ddubya] #4455163
07/10/17 09:39 AM
07/10/17 09:39 AM
Joined: Apr 2008
Posts: 12,973
Onondaga County
Miller88 Offline
Miller88  Offline
Joined: Apr 2008
Posts: 12,973
Onondaga County
Which engine is in the Mazda 6? If it's the MZR I4, I'd have no problem going 10K on it.


18 Forester 2.5I 6M
00 Jeep Cherokee
01 Ford F-350 XL 4x4 5M
Re: Time vs. Miles for OCI circumstance [Re: Miller88] #4455167
07/10/17 09:47 AM
07/10/17 09:47 AM
Joined: Sep 2016
Posts: 53
DFW, TX
Ddubya Offline OP
Ddubya  Offline OP
Joined: Sep 2016
Posts: 53
DFW, TX
Originally Posted By: Miller88
Which engine is in the Mazda 6? If it's the MZR I4, I'd have no problem going 10K on it.


I think that is the one. It's a 2.5L inline 4 which I think is kind of a Ford/Mazda mashup (same or similar to the Ford Duratech). I know Mazda is fully independent now, but I never really understood the arrangement/partnership between them and Ford at the time. The way I understand it, the generation 6 we have is mechanically a Ford Fusion, with body, interior, and suspension by Mazda. It's been a great car, and the new 6 is on my short list when it is time to replace it in 2 or 3 years.

Last edited by Ddubya; 07/10/17 09:50 AM.

2017 Volvo S60 Inscription (Castrol Edge Syn)
2010 Mazda 6i Touring (PP or Castrol Magnatec Syn)
2013 Ford Explorer V6 (company car) (Kendall Syn Blend)
2009 Caddy DTS (Castrol EP)
Re: Time vs. Miles for OCI circumstance [Re: Ddubya] #4455257
07/10/17 11:40 AM
07/10/17 11:40 AM
Joined: Mar 2012
Posts: 1,360
San Antonio, TX
E150GT Offline
E150GT  Offline
Joined: Mar 2012
Posts: 1,360
San Antonio, TX
I used to run 10k and even ran 13k on my 2010 Mazda 3 and had good UOA. I was using mobile 1 ep and filter


1984 Mercedes-Benz 300SD - 100k
1995 F150 XL 4.9 reg cab 5MT - 251k 5w30
2016 Mazda6 Touring 6MT - 57k 10w30
2006 Buick Lucerne CXL 3.8 31k 5w30
Re: Time vs. Miles for OCI circumstance [Re: Ddubya] #4455295
07/10/17 12:30 PM
07/10/17 12:30 PM
Joined: Sep 2008
Posts: 76
St. Catharines Ontario Canada
03s Offline
03s  Offline
Joined: Sep 2008
Posts: 76
St. Catharines Ontario Canada
You want to stretch the DTS out to 10k miles or 18 months but the manual will say change it after a year and Mobil 1 Annual Protection says to change the oil after a year so why would you stretch it out to 18 months!


2005 Chevrolet Optra
Kendall GT-1 Max with Liquid Titanium 5W-30
Fram Ultra XG3387A
Re: Time vs. Miles for OCI circumstance [Re: Ddubya] #4455331
07/10/17 01:24 PM
07/10/17 01:24 PM
Joined: Oct 2005
Posts: 1,676
South Dakota
otis24 Offline
otis24  Offline
Joined: Oct 2005
Posts: 1,676
South Dakota
I think Mobil1 Annual Protection states to follow manufacturers recommendations. That being said, given that the vehicles in question aren't under warranty, I would confidently run 10k with the right oil. Nor would I be afraid to exceed the one year mark with the right oil. But whereas Mobil Annual Protection places a limitation on themselves of one year, I would not want to exceed that. They know their limitations.


1991 Chevrolet K1500 (4.3, 4x4, 86k miles)

2016 Dodge Grand Caravan
(3.6 V6) 46500 miles
Re: Time vs. Miles for OCI circumstance [Re: Ddubya] #4455339
07/10/17 01:31 PM
07/10/17 01:31 PM
Joined: Sep 2014
Posts: 2,175
US-WA
Dyusik Offline
Dyusik  Offline
Joined: Sep 2014
Posts: 2,175
US-WA
Oil doesn't have a wristwatch, or a calendar.


95 Cherokee 190K DELO 10W30, XG8
07 IS250 103K Napa 10w30, FULL
04 YZF-R1 19K DELO 15w40, XG7317
99 HD XL1200S 21K VR1 20w50, NG1515
14 RX450h 35k PP MIX, NG7047
Re: Time vs. Miles for OCI circumstance [Re: Dyusik] #4455379
07/10/17 02:10 PM
07/10/17 02:10 PM
Joined: Oct 2005
Posts: 7,094
Colorado
Kuato Offline
Kuato  Offline
Joined: Oct 2005
Posts: 7,094
Colorado
Originally Posted By: Dyusik
Oil doesn't have a wristwatch, or a calendar.


Truth has been spoken.


Thick vs Thin test: 15k / 43k miles complete
Re: Time vs. Miles for OCI circumstance [Re: 03s] #4455426
07/10/17 03:00 PM
07/10/17 03:00 PM
Joined: Dec 2016
Posts: 7,109
Waco, TX
Linctex Offline
Linctex  Offline
Joined: Dec 2016
Posts: 7,109
Waco, TX
Originally Posted By: 03s
so why would you stretch it out to 18 months!


Because multiple used oil analysis on this site show it really doesn't matter how long the oil sits in the oil pan

It's not a perishable, like milk is


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: Time vs. Miles for OCI circumstance [Re: Dyusik] #4455438
07/10/17 03:16 PM
07/10/17 03:16 PM
Joined: May 2014
Posts: 1,387
Minnesota
philipp10 Offline
philipp10  Offline
Joined: May 2014
Posts: 1,387
Minnesota
Originally Posted By: Dyusik
Oil doesn't have a wristwatch, or a calendar.


oh my God....blasphemy....

Re: Time vs. Miles for OCI circumstance [Re: Kuato] #4455444
07/10/17 03:24 PM
07/10/17 03:24 PM
Joined: Dec 2002
Posts: 4,250
The Garden State
Whimsey Offline
Whimsey  Offline
Joined: Dec 2002
Posts: 4,250
The Garden State
Originally Posted By: Kuato
Originally Posted By: Dyusik
Oil doesn't have a wristwatch, or a calendar.


Truth has been spoken.


thumbsup thumbsup thumbsup thumbsup

With my 1996 Contour, which I still have, and my 2002 F-150 I regularly ran 8,000+ OCI's in 18 to 24 month intervals and the engines were still spotless under the valve cover and the few UOA's I did showed no unusual wear metals. I used Mobil 1, Castrol Edge, Valvoline Synpower and Pennzoil Platinum. I did very little short tripping. Most of the driving was 9-10 mile trips on secondary highways with some longer distance highway driving thrown in.

Whimsey

Re: Time vs. Miles for OCI circumstance [Re: Whimsey] #4455492
07/10/17 04:20 PM
07/10/17 04:20 PM
Joined: Sep 2016
Posts: 53
DFW, TX
Ddubya Offline OP
Ddubya  Offline OP
Joined: Sep 2016
Posts: 53
DFW, TX
^^

Thank you. Cool that you still have your Contour. I had a late 90s Mercury Mystique V6 that I bought used and drove for many years prior to selling it. It never left me stranded or anything like that, but it had lots of little issues that needed attention as it got older. It was a really fun car to drive, and I enjoyed it.

Last edited by Ddubya; 07/10/17 04:21 PM.

2017 Volvo S60 Inscription (Castrol Edge Syn)
2010 Mazda 6i Touring (PP or Castrol Magnatec Syn)
2013 Ford Explorer V6 (company car) (Kendall Syn Blend)
2009 Caddy DTS (Castrol EP)
Re: Time vs. Miles for OCI circumstance [Re: Ddubya] #4455681
07/10/17 07:44 PM
07/10/17 07:44 PM
Joined: Apr 2008
Posts: 12,973
Onondaga County
Miller88 Offline
Miller88  Offline
Joined: Apr 2008
Posts: 12,973
Onondaga County
Originally Posted By: Ddubya
Originally Posted By: Miller88
Which engine is in the Mazda 6? If it's the MZR I4, I'd have no problem going 10K on it.


I think that is the one. It's a 2.5L inline 4 which I think is kind of a Ford/Mazda mashup (same or similar to the Ford Duratech). I know Mazda is fully independent now, but I never really understood the arrangement/partnership between them and Ford at the time. The way I understand it, the generation 6 we have is mechanically a Ford Fusion, with body, interior, and suspension by Mazda. It's been a great car, and the new 6 is on my short list when it is time to replace it in 2 or 3 years.


Yep! That's the one! 10K on a synthetic and a good filter and don't look back!


18 Forester 2.5I 6M
00 Jeep Cherokee
01 Ford F-350 XL 4x4 5M
Re: Time vs. Miles for OCI circumstance [Re: Ddubya] #4455701
07/10/17 08:01 PM
07/10/17 08:01 PM
Joined: Sep 2015
Posts: 6,071
Kalifornia Kollective
BrocLuno Offline
BrocLuno  Offline
Joined: Sep 2015
Posts: 6,071
Kalifornia Kollective
Looking at UOA data and being involved in the thread about a member who has 62,000 miles on the same AmsOil fill (with by-pass filtering) with top-ups when he changes his full flow OEM style filters (10K IIRC), I'd say it should be easy to go 10K for both those cars given the oil you are using 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: Time vs. Miles for OCI circumstance [Re: otis24] #4455728
07/10/17 08:36 PM
07/10/17 08:36 PM
Joined: Jul 2011
Posts: 1,224
Houston, TX
Coprolite Offline
Coprolite  Offline
Joined: Jul 2011
Posts: 1,224
Houston, TX
Originally Posted By: otis24
. But whereas Mobil Annual Protection places a limitation on themselves of one year, I would not want to exceed that. They know their limitations.



No

I bet it would be fine for more than a year. Since the are calling it AP, the are only warrantying it for a year. If warrantying is even a word. I don't think their issue is lack of longevity, rather they don't want people trying to run it forever and then suing them for not saying to change oil.

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