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OCI older car, modern oil #5242553 10/17/19 05:24 PM
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VQLT Offline OP
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can I extend the OCI for an older car if I use today's modern oils? I have a 2005 Scion XA that recommends 6 months
or 5k miles but that is based on oil technology from 15 years ago (which I believe was SM rated oil). with new oils can I extend the OCI?

Re: OCI older car, modern oil [Re: VQLT] #5242559 10/17/19 05:29 PM
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simple_gifts Offline
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What is your driving pattern?

I actually think engines of that era are easier to extend the OCI since they aren't direct injection.
-
I had an '03 echo with the same engine as your xA; I also have a yaris with the 1NZ-FE; for my driving pattern (36 miles highway to work) I run 12-15K miles with an extended drain oil (amsoil)

Mobil 1 AP or EP should be up to the task too.

If you are short tripping or have significant blowby, probably best not to extend your OCI

Awesome engine btw.

Last edited by simple_gifts; 10/17/19 05:33 PM.

2004 Prius; 131K; ATM
2007 Yaris 108K ATM
2006 B2300;137K;ALM
Re: OCI older car, modern oil [Re: VQLT] #5242605 10/17/19 06:31 PM
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GumbyJarvis Offline
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Me thinks something like Supertech Synthetic paired with a filter of your choice would be fine for double the OEM recommendation if your engine is clean, maintained, trouble free, and you do alot of highway.


2018 Ram 1500 5.7L SLT
Group 7 V2222 - Mobil 1 Truck & SUV 5w30
Re: OCI older car, modern oil [Re: VQLT] #5242628 10/17/19 06:57 PM
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JLTD Offline
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Originally Posted by VQLT
can I extend the OCI for an older car if I use today's modern oils? I have a 2005 Scion XA that recommends 6 months
or 5k miles but that is based on oil technology from 15 years ago (which I believe was SM rated oil). with new oils can I extend the OCI?


Get a UOA. It's the only way to be sure.

https://www.youtube.com/watch?v=eGOtZDk6wRc


Lates.
Re: OCI older car, modern oil [Re: VQLT] #5242632 10/17/19 07:00 PM
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kschachn Offline
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I run regular Mobil 1 in my 1NZ-FE at 9000 to 10,000 mile intervals. I've got over 280,000 miles on it currently and it uses the least amount of oil out of all my vehicles. No issues, no weird noises, nothing. It works fine.

I just replaced the valve gasket on it for the first time and the cams looked great. I have not pulled the oil pan.

Here is the thread I started when I changed out the valve cover gasket:

Thread


1994 BMW 530i, 252K
1996 Honda Accord, 288K
1999 Toyota Sienna, 434K
2000 Toyota ECHO, 284K
Re: OCI older car, modern oil [Re: VQLT] #5242726 10/17/19 08:55 PM
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92saturnsl2 Offline
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Having older vehicles myself and plenty of UOAs, here's my recommendation:

short trips / severe duty - stick with 5-6k or whatever the manufacturer recommends

primarily highway use / light duty - 7500mi conventional oil, 10k synthetic.


96 Grand Prix SE (project car)
04 Odyssey EX 205k Shell Rotella T5 10w-30
96 Maxima GLE 275k Mobil Super HM 5w-30
07 Chrysler Pacifica Limited 4.0L 151k Mobil1 EP 0w-20
Re: OCI older car, modern oil [Re: kschachn] #5242769 10/17/19 09:41 PM
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ndfergy Offline
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Originally Posted by kschachn
I run regular Mobil 1 in my 1NZ-FE at 9000 to 10,000 mile intervals. I've got over 280,000 miles on it currently and it uses the least amount of oil out of all my vehicles. No issues, no weird noises, nothing. It works fine.

Good to know. I might have to reconsider my choice and interval. How is it driven?


2015 Toyota Yaris 5spd Manual
Summer: Mobil Super 1000 10w30
Winter: Mobil Super 1000 5w30
OEM Filter
Re: OCI older car, modern oil [Re: VQLT] #5242850 10/17/19 11:58 PM
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Zolton Offline
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Every 6 months is not a bad plan anyway. I rather go by the calendar than miles for more than a few reasons.

Re: OCI older car, modern oil [Re: VQLT] #5242928 10/18/19 06:05 AM
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Linctex Offline
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Originally Posted by VQLT
can I extend the OCI for an older car if I use today's modern oils? I have a 2005


2005 is older?!?!?

Wow, I'm driving a round in fossils.......


"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: OCI older car, modern oil [Re: Linctex] #5242934 10/18/19 06:18 AM
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RayCJ Offline
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Originally Posted by Linctex
Originally Posted by VQLT
can I extend the OCI for an older car if I use today's modern oils? I have a 2005


2005 is older?!?!?

Wow, I'm driving a round in fossils.......


LOL crackmeup

Re: OCI older car, modern oil [Re: VQLT] #5242977 10/18/19 07:04 AM
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stanlee Offline
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My 1999 Ford ohv 4.0L gets 5000 mile OCI and 7000 on M1 EP. Use all the latest synthetics (conventional oils jugs are hardly any cheaper). It has 267k miles and in the last 2 years has done 35k miles a year. I have to add 0.5-1qt between oil changes. I'm sure extending would be fine but I have no desire to change what's working. In fact I think the old low simplistic, lower powe old engines would tolerate extended changes far better than these modern engines that call for 10k changes. Oil changes and maintenance are fun for me so I'm constantly changing oil, filters, ball joints, bushings, transfer case fluids etc. I blame cordless tools mostly for my willingness (not for the oil changes).

Last edited by stanlee; 10/18/19 07:10 AM.
Re: OCI older car, modern oil [Re: ndfergy] #5243048 10/18/19 08:11 AM
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kschachn Offline
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Originally Posted by ndfergy
Good to know. I might have to reconsider my choice and interval. How is it driven?

Well it only has what, 108 horsepower? So it spends a lot of time at the upper RPM range. I drive mostly city with some highway to and from work.


1994 BMW 530i, 252K
1996 Honda Accord, 288K
1999 Toyota Sienna, 434K
2000 Toyota ECHO, 284K
Re: OCI older car, modern oil [Re: Linctex] #5243053 10/18/19 08:12 AM
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FordCapriDriver Offline
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Originally Posted by Linctex
Originally Posted by VQLT
can I extend the OCI for an older car if I use today's modern oils? I have a 2005


2005 is older?!?!?

Wow, I'm driving a round in fossils.......


My thoughts exactly, 2005 was like, yesterday?

Last edited by FordCapriDriver; 10/18/19 08:12 AM.

1975 Ford Capri II Ghia 3000 V6 - 315k, Repsol Elite Super 20W-50
1988 Ford Escort XR3i Cabrio - 110k, Valvoline Maxlife 10W-40

Re: OCI older car, modern oil [Re: VQLT] #5243115 10/18/19 09:15 AM
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Lapham3 Offline
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I took a look here as maybe it might apply to my 60's GM stuff but guess not!

Re: OCI older car, modern oil [Re: kschachn] #5243187 10/18/19 10:39 AM
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ndfergy Offline
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Originally Posted by kschachn
Originally Posted by ndfergy
Good to know. I might have to reconsider my choice and interval. How is it driven?

Well it only has what, 108 horsepower? So it spends a lot of time at the upper RPM range. I drive mostly city with some highway to and from work.

Thanks. So you don't baby it, that's what I wanted to hear.


2015 Toyota Yaris 5spd Manual
Summer: Mobil Super 1000 10w30
Winter: Mobil Super 1000 5w30
OEM Filter
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