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#4698555 - 03/18/18 11:33 AM Seems to be a Quest for Longer OCI's
bumpasmerc Offline


Registered: 03/16/18
Posts: 26
Loc: Ontario, Canada
Newbie here. I've been lurking on this site for a while and am confused about the apparent quest among some members to extend OCI's to unprecedented levels ie. 15k, 20k or even 25k.

Could someone explain the logic behind this quest ?

I gather that it may be for several reasons: protect the environment from used motor oil, save money by limiting the frequency of oil changes or just the satisfaction of achieving long OCI's without engine damage. One member seems to promote very long OCI's in the belief that engine wear is not significantly different using fresher oil or oil with high mileage. (please forgive me sir if I over simplified).

However these reasons don't justify IMO, risking thousands of dollars for repairs or replacement of an engine considering a saving of only a few hundred dollars per year on reduced number of oil changes. I know I am missing something here and there is probably a perspective that I can't yet grasp.
_________________________
95 Mercury Grand Marquis 4.6 SOHC, 134k, M1 5w30 , Fram Ultra.

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#4698560 - 03/18/18 11:36 AM Re: Seems to be a Quest for Longer OCI's [Re: bumpasmerc]
Snagglefoot Online   content


Registered: 12/31/17
Posts: 1304
Loc: Alberta
Tight Wads LOL

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#4698564 - 03/18/18 11:40 AM Re: Seems to be a Quest for Longer OCI's [Re: bumpasmerc]
Leo99 Offline


Registered: 03/30/14
Posts: 2877
Loc: NJ
It's adding to the body of knowledge through first-hand accounts and accumulation of data. There is a lot of "bro science" with regard to vehicle maintenance and some folks want real data to justify the maintenance recommendations. Therefore, some folks choose to ignore the recommendations and see what happens if they push their OCI beyond what some folks think is achievable.
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Without data you're just another person with an opinion. W. E. Deming

2003 Corolla 250,000 miles
2004 Rav4 333,000 miles
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#4698580 - 03/18/18 11:52 AM Re: Seems to be a Quest for Longer OCI's [Re: bumpasmerc]
doitmyself Offline


Registered: 06/03/02
Posts: 6164
Loc: MI
The risk the OP talks about is not there IF we are talking about "normal" conditions. Would you repaint your house every 4 years when there was evidence that the paint lasts well beyond 10 years? Why risk ruining your $200,000 dollar home. Exact same logic. Today's oils in today's engines have been proven to be effective well beyond the old 3,000 mile, 3 month recommendations.

There were discussions almost 10 years ago about the studies that indicated new oil produces more wear than seasoned oil. I don't know what the current thinking is on this, so make up your own mind after you study the research data: https://www.bobistheoilguy.com/forums/ubbthreads.php/topics/1528239/1 I think some believe the studies suggest that over-changing your oil could result in more wear.

If the OP is about those here who push the oil beyond the current recommended boundaries, that's a different story. Some people just like to tinker with things. Good for them.

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#4698590 - 03/18/18 11:59 AM Re: Seems to be a Quest for Longer OCI's [Re: bumpasmerc]
JLTD Offline


Registered: 12/15/17
Posts: 385
Loc: US
Who among us hasn't said, "Let's see what she'll do"

grin
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#4698600 - 03/18/18 12:16 PM Re: Seems to be a Quest for Longer OCI's [Re: bumpasmerc]
farrarfan1 Offline


Registered: 06/24/04
Posts: 1551
Loc: Indiana
Originally Posted By: bumpasmerc


Could someone explain the logic behind this quest ?


Because it's their car, their money, and no ones business but their own what they do with either.
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If laughter is the best medicine, then why do sick people go to doctors instead of comedians?

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#4698605 - 03/18/18 12:23 PM Re: Seems to be a Quest for Longer OCI's [Re: bumpasmerc]
Nick1994 Offline


Registered: 02/19/13
Posts: 9839
Loc: Phoenix, AZ
??? Who is doing these long OCI's?
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2015 Hyundai Sonata 2.4L 76k PU 5w30 & OEM
2000 Toyota Camry 2.2L 227k M1 AFE 0w30 & Wix
1996 Jeep Cherokee 4.0L 145k M1 HM 10w40 & Fram Ultra

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#4698612 - 03/18/18 12:26 PM Re: Seems to be a Quest for Longer OCI's [Re: Nick1994]
Patman Offline



Registered: 05/27/02
Posts: 20272
Loc: Oakville, Ontario
Originally Posted By: Nick1994
??? Who is doing these long OCI's?


I agree, if anything on here I think the trend on this site is going a little shorter on the OCIs than in the past.
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2018 Corvette (M1 5w30 & AC Delco PF64)
2006 Civic EX Coupe (M1 0w20 AFE & Fram Ultra)
2010 BMW 328i X-Drive (GC 0w40 & Mann)


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#4698620 - 03/18/18 12:41 PM Re: Seems to be a Quest for Longer OCI's [Re: Patman]
MRtv Offline


Registered: 01/04/16
Posts: 202
Loc: Ada county Idaho
Originally Posted By: Patman
Originally Posted By: Nick1994
??? Who is doing these long OCI's?


I agree, if anything on here I think the trend on this site is going a little shorter on the OCIs than in the past.


I have noticed this too. I am glad when vehicle owners don't try to SAVE a little on oil while possibly DESTROYING the vehicle in the process. Some engine types can go long, others not so much. Some engines have huge sumps and great reserves to take them longer. Some a tiny sump and no reserves beyond a handful of miles. I am intrigued by the logic of some who say why they do shorter OCI. Many of them make a lot of sense.
_________________________
2014 Nissan Versa Note 1.6 liter engine. 1997 Ford F150 4x4 4.6 liter engine.

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#4698621 - 03/18/18 12:43 PM Re: Seems to be a Quest for Longer OCI's [Re: bumpasmerc]
FermeLaPorte Offline


Registered: 07/25/17
Posts: 428
Loc: Texas (south)
A few days ago there was a thread about a guy doing a 15k oci with Mobil, but his previous oci's had been 5-6k with a myriad of other oils. Needless to say, he blamed Mobil for the bad wear metals shown in the uoa.

There's a lot of pseudoscience going on here. Sone engines can go 10,000 miles on an OCI's. This man in particular had an engine that recommended far less miles on an OCI yet went 3x that on an OCI and blamed an oil company. Just remember this site is sponsored by Shell


Edited by FermeLaPorte (03/18/18 12:46 PM)
_________________________
Always Mobil 1
2014 1.6L Nissan Versa Sedan, 5 spd, 5k OCI.
2011 3.5L Chevrolet Impala, Automatic, 5k OCI.

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#4698641 - 03/18/18 12:55 PM Re: Seems to be a Quest for Longer OCI's [Re: Patman]
oldmaninsc Offline


Registered: 09/25/06
Posts: 1553
Loc: California
Originally Posted By: Patman
Originally Posted By: Nick1994
??? Who is doing these long OCI's?


I agree, if anything on here I think the trend on this site is going a little shorter on the OCIs than in the past.


Exactly! I see so many people who think the auto makers are ok to design the car, but aren't smart enough to figure out when the oil should be changed.

Also what is considered "longer OCI"? 5K miles, 10K miles, 15k miles?
_________________________
2013 Chevrolet Impala LT
2004 Mercury Grand Marquis LS
2005 Toyota Camry LE
1998 Ford F-150 XLT

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#4698644 - 03/18/18 12:58 PM Re: Seems to be a Quest for Longer OCI's [Re: bumpasmerc]
danez_yoda Offline


Registered: 07/18/09
Posts: 408
Loc: texas
The progression as the early montra was 3month/3000 mile in the 80s and 90s. Then in the late 90s it moved to 5000 mile oci on conventional oil but the oldtimers still did 3k to be safe. Well the aoi standards back then were API SJ or so. Now we are on SN and heading to SN+. Much better oil than in the past.

Back to the mid 90s, synthetic oils came out (Mobil 1 and Amsoil) to the general market and were very expensive. Compared to ~1.00/qt for conventional. They touted the vastly superior lubrication properties to allow long ocis up to 25k miles to justify the price. Oil filter change was all that was required.

That began the push for longer andlonger ocis. Now quality “synthetic” oils are on the market for relatively low prices so there is no need to push the ocis longer just to justify the big price boost comared to conventional.

Still for 5k, oci a quality sn speced conventional is fine for normal daily driving and a synthetic couls easily take you to 10k.

For myself. I change the lowest cost major brand synthetic (penzoil, quaker, mobil, castrol, etc) that i can get for under $12/5qt jug every 5k miles. I like to inspect all the other parts while under there and grease my main drive shaft ujoints.

Everyone makes their personal decision.

If you came here looking for the best oils for your vehicle. Ther is good news. Any regularly. Changed oil with a rating at or above your manufacturers recommedation will run your engine past 150k miles and likely passed 200k. Pick whichever you want. I choose the lowest price one.

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#4698663 - 03/18/18 01:16 PM Re: Seems to be a Quest for Longer OCI's [Re: farrarfan1]
WobblyElvis Offline


Registered: 09/23/14
Posts: 1273
Loc: Toronto Canada
[/quote]
Because it's their car, their money, and no ones business but their own what they do with either.[/quote]

+1

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#4698671 - 03/18/18 01:33 PM Re: Seems to be a Quest for Longer OCI's [Re: bumpasmerc]
oil_burner Offline


Registered: 03/17/18
Posts: 7
Loc: Canada
well it's a bit like this.

its pretty well proven that if you floss after each meal and brush 3x daily you are going to eliminate ever having cavities and you will definitely have healthier teeth, saving thousands of dollars at the dentist, and your teeth are going to last a lot longer until you need dentures.

So knowing this information and knowing that it is free to brush and floss your teeth, are you going to start carrying around a toothbrush and doing it after each meal? Thought so.

Exact same thing applies to diet and exercise. Just eating right and staying in shape could add years to your life, how much is that worth? And yet how many hours do you spend researching a healthy meal plans or exercise routines compared to technical oil specs and what OCI is appropriate for a car...an inanimate object you own and can be easily replaced. And yet it brings out the OCD in people like their engine is their first born child and if it were to wear out one day there should be a full blown funeral.


Edited by oil_burner (03/18/18 01:35 PM)

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#4698677 - 03/18/18 01:43 PM Re: Seems to be a Quest for Longer OCI's [Re: bumpasmerc]
MolaKule Offline


Registered: 06/05/02
Posts: 18947
Loc: Iowegia - USA
I always point to the fact that in almost every Owner's Manual, there is what is called a, "Severe Service" maintenance schedule.

My philosophy is if you follow this schedule, your driveline components will last longer.
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Hatito Hakiwisilaasamamo Waswasimamo Howisiwapani - Shawnee for: "Hello," "Good Morning," and "here's hoping you feel good." smile

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