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#4532635 - 10/03/17 06:47 AM Oil change TIME interval question
milosz Offline


Registered: 10/03/17
Posts: 2
Loc: Illinois
I have a 2013 Infiniti G37x with 41,000 miles on it, bought it recently. I just had an oil change with Valvoline SynPower synthetic. My car is kept in a garage.

I do not drive very much, maybe 3,000 miles a year It's 80% stop-and-go city driving, trips of 15 to 30 minutes. So a ~7,000 mile oil change interval would be over two years. I I think that that would be too long, all the anti-corrosion and acid-neutralizing additives would be used up, though the oil's lubricating properties might still be OK.

MY QUESTIONS:
1. How long a TIME interval is appropriate? 6 months? 9? 12? I don't want to cheap out, but I don't want overkill either....
2. Do synthetic oils have more anti-corrosion additives than dinosaur oil?

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#4532649 - 10/03/17 07:02 AM Re: Oil change TIME interval question [Re: milosz]
KevinP Offline


Registered: 05/27/13
Posts: 125
Loc: Monroe, WA
1. 12-months

2. Maybe... you are buying good oil the rest you take on faith because they don't share their additive package details.

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#4532656 - 10/03/17 07:20 AM Re: Oil change TIME interval question [Re: milosz]
Indydriver Offline


Registered: 03/20/11
Posts: 2152
Loc: Indiana
Everyone I've ever seen says one year max but it isn't going to seize up if you go 18 months. The annual oil change ritual gives you flexibility on when to do it. If you store the car over winter, do it right before you put it up.
_________________________
2017 Mazda CX3 1000 FF
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#4532697 - 10/03/17 08:09 AM Re: Oil change TIME interval question [Re: milosz]
ZZman Offline


Registered: 03/17/08
Posts: 5782
Loc: Michigan
I always see 12 months or x amount of miles
_________________________
2003 Mercury Grand Marquis. Rotella T6 Multi-Vehicle oil
2008 Sebring Hardtop convertible. Rotella T6 Multi-Vehicle oil
2006 Kawasaki Vulcan 900 LT. Amsoil Metric 10w-40

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#4532755 - 10/03/17 08:54 AM Re: Oil change TIME interval question [Re: milosz]
Linctex Offline


Registered: 12/31/16
Posts: 6148
Loc: Waco, TX
Originally Posted By: milosz
oil change interval would be over two years. I think that that would be too long, all the anti-corrosion and acid-neutralizing additives would be used up, though the oil's lubricating properties might still be OK.


You think incorrectly.

There is no harm in going two years on an oil change AS LONG AS when you do start the car, let it warm up and drive it a while.

Time = does not hurt oil
Short, cold trips = kills oil
_________________________
"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."

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#4532759 - 10/03/17 08:56 AM Re: Oil change TIME interval question [Re: milosz]
Linctex Offline


Registered: 12/31/16
Posts: 6148
Loc: Waco, TX
I have a number of infrequently used equipment, over 25 engines on my ranch.

My tree branch chipper (4-cyl Ford industrial engine) gets used an hour a year. Same oil for over 10 years, & it's still clean. I'm not going to change it unless it needs it.
_________________________
"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."

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#4532770 - 10/03/17 09:05 AM Re: Oil change TIME interval question [Re: milosz]
barkingspider Offline


Registered: 12/22/13
Posts: 2048
Loc: socal
I would change syn oil every 2 years in ur situation. If u want to change it yearly, use cheap dino oil
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#4532775 - 10/03/17 09:09 AM Re: Oil change TIME interval question [Re: milosz]
knerml Offline


Registered: 04/05/05
Posts: 479
Loc: NE Ohio
It depends on how you drive the car.

If the engine does not get warmed up properly when run, there can be water and other contaminates building up in the oil.

Also, PCV can clog.

12 months max.

Also, be sure to flush brake fluid every 2 years. Brake fluid is hydroscopic, so absords water.
_________________________
2015 Hyundai Elantra Sport 2.0 GDI Mobil 1 5W20 & OEM/Mann W811/80 Filter
2018 Hyundai Santa Fe Sport 2.0T GDI Castrol Edge 5W40 & OEM/Mann W811/80 Filter

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#4532781 - 10/03/17 09:10 AM Re: Oil change TIME interval question [Re: milosz]
knerml Offline


Registered: 04/05/05
Posts: 479
Loc: NE Ohio
It depends on how you drive the car.

If the engine does not get warmed up properly when run, there can be water and other contaminates building up in the oil.

Also, PCV can clog.

12 months max.

Also, be sure to flush brake fluid every 2 years. Brake fluid is hydroscopic, so absords water.
_________________________
2015 Hyundai Elantra Sport 2.0 GDI Mobil 1 5W20 & OEM/Mann W811/80 Filter
2018 Hyundai Santa Fe Sport 2.0T GDI Castrol Edge 5W40 & OEM/Mann W811/80 Filter

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#4532867 - 10/03/17 10:25 AM Re: Oil change TIME interval question [Re: milosz]
Mr Nice Offline


Registered: 09/12/04
Posts: 21193
Loc: Orlando, FL
My 83 year old dad drive 2500 miles a year, I do a drain and refill yearly.

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#4532873 - 10/03/17 10:31 AM Re: Oil change TIME interval question [Re: barkingspider]
NormanBuntz Offline


Registered: 07/27/13
Posts: 2123
Loc: Outer Banks, NC
Originally Posted By: barkingspider
I would change syn oil every 2 years in ur situation. If u want to change it yearly, use cheap dino oil


This, except not "cheap" dino oil on a one year OCI. Use quality oil. Also if you stick with full synthetic, do yourself a favor and use a Fram Ultra for two years with your low mileage. My M35 (similar motor) has run great since new with a synthetic blend.
_________________________
2017 Honda Odyssey SE, 14K
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2007 Honda Ridgeline RTS, 86K
2007 Infiniti M35, 104K

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#4532897 - 10/03/17 10:52 AM Re: Oil change TIME interval question [Re: milosz]
BrocLuno Offline


Registered: 09/06/15
Posts: 5514
Loc: Kalifornia Kollective
Like Linctex, but with somewhat less equipment, I let it go until an actual reason to change. I'd run the oil a year and do a UOA. We're all shooting in the dark with a guess ...

Oil stayed in the ground for a few 100,000,000 years. It does not go bad in a year or two. The add pak depletes based on chemistry, not time. Fuel dilution, combustion by-products, etc. That is factored into the usual mileage figure. Look for severe use mileage recommendation and change by that if you do not want to do a UOA ...

It may well be fine for many years with annual UOA. We have a member here with 62,000 miles and many years on his original fill (with by-pass filtration & top-ups). He's running AmsOil, but any really good synthetic should do about the same.

Your oil is prolly good to at least 12,000 miles in mixed use. The big deal is to make sure the motor comes up to op temp and stays there for a while. A 30 minute drive should do it nicely, and you do that, so you are doing OK smile


Edited by BrocLuno (10/03/17 10:52 AM)
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#4532984 - 10/03/17 12:48 PM Re: Oil change TIME interval question [Re: NormanBuntz]
Linctex Offline


Registered: 12/31/16
Posts: 6148
Loc: Waco, TX
Originally Posted By: NormanBuntz

This, except not "cheap" dino oil on a one year OCI. Use quality oil.


Please explain further.

Super Tech and Harvest King are some of the "cheapest" oils you can purchase....
...........................but lack NOTHING in "quality".

If you stay with current API certified oils,
you CAN NOT buy "low quality" oil anymore..
_________________________
"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."

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#4532991 - 10/03/17 01:03 PM Re: Oil change TIME interval question [Re: milosz]
Pajero Offline


Registered: 05/05/12
Posts: 848
Loc: Rio Rancho, NM
My last oil change interval was three years. Using PUP 5w30 with Amsoil EAO filter. I wouldn't run dino more than a year, but with synthetics it's different. Again, short trips are not good compared to long trips 20 minutes>. Good luck!


Respectfully,

Pajero!
_________________________
Always remember "Planned obsolescence."

1994 Montero SR 3.5 DOHC, 133,xxx
Fram Ultra/ Snorkel with Pre-filter
K-9-Co-pilot

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#4532994 - 10/03/17 01:09 PM Re: Oil change TIME interval question [Re: Linctex]
SVTCobra Offline


Registered: 12/11/09
Posts: 701
Loc: Battle Creek, MI
Originally Posted By: Linctex
Originally Posted By: NormanBuntz

This, except not "cheap" dino oil on a one year OCI. Use quality oil.


Please explain further.

Super Tech and Harvest King are some of the "cheapest" oils you can purchase....
...........................but lack NOTHING in "quality".

If you stay with current API certified oils,
you CAN NOT buy "low quality" oil anymore..



Its an uphill battle on this forum Linctex to dispel the myth of time hurts oil. I've posted 12k mile UOAs that took 20 months with filters cut apart, I've seen an UOA of 20 yr old oil from a tractor crankcase look good, but still the myth persists that its a certain deadline to change oil or catastrophic damage will occur.
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If marriage was outlawed only outlaws would have in-laws.

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