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#4568342 - 11/08/17 09:21 PM Longest OCI's without a filter change
1JZ_E46 Offline


Registered: 04/04/16
Posts: 1227
Loc: Oregon
10,000 miles seems to be the average "long" duration OCI I see in the UOA section. Does anyone here regularly do 20,000 miles or more without an oil change? If so, what oil/vehicle? How does it look coming out? UOA report? Noticeable sludge/varnish? I'm wondering if there is a trend in what oil brands can regularly do 20k+. Let's see who wins!
_________________________
2007 BMW X5 4.8i, 105K: Castrol EDGE 0W-40, Mann
2012 Mini Cooper, 45K: Castrol EDGE 0W-30, Mann

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#4568347 - 11/08/17 09:23 PM Re: Longest OCI's without a filter change [Re: 1JZ_E46]
Vern_in_IL Offline


Registered: 06/25/14
Posts: 1885
Loc: IL
Kendall and an Ultra All THE WAY!
_________________________


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#4568349 - 11/08/17 09:24 PM Re: Longest OCI's without a filter change [Re: Vern_in_IL]
1JZ_E46 Offline


Registered: 04/04/16
Posts: 1227
Loc: Oregon
Originally Posted By: Vern_in_IL
Kendall and an Ultra All THE WAY!


Details!
_________________________
2007 BMW X5 4.8i, 105K: Castrol EDGE 0W-40, Mann
2012 Mini Cooper, 45K: Castrol EDGE 0W-30, Mann

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#4568361 - 11/08/17 09:37 PM Re: Longest OCI's without a filter change [Re: 1JZ_E46]
Mr Nice Offline


Registered: 09/12/04
Posts: 21198
Loc: Orlando, FL
I did 22K miles but with 4 OCIs.

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#4568400 - 11/08/17 10:11 PM Re: Longest OCI's without a filter change [Re: 1JZ_E46]
WobblyElvis Offline


Registered: 09/23/14
Posts: 1345
Loc: Toronto Canada
I did a few "longer" OCI's without any problems and I used a fram ultra filter for 20,000 miles with no complaints. Now the car has 200,000 miles on it and it appears to suffer from blow-by which puts carbon deposits in the oil and filter so I change the oil at around 7 - 9,000 miles. Mostly I use a combination of cheap store brand synthetic and conventional oil available at Canadian Tire.

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#4568443 - 11/09/17 01:25 AM Re: Longest OCI's without a filter change [Re: 1JZ_E46]
Linctex Offline


Registered: 12/31/16
Posts: 6148
Loc: Waco, TX
Back in the early 90's I ran a Motorcraft FL-1A oil filter for about 30,000 miles over 3 oil changes (15W-40) in a 1978 Ford F250.

I had a old Chevy 283 that burned a quart of oil every 100 miles or so, and I never changed the oil filter ever, in almost a decade.

During the huge "dot.com boom" in the 90's a fellow I know who was setting computers and servers up for businesses ran his K1500 Chevy 350 ('93 or 94 model) for 50,000 miles on Mobil 1 and a PF35 oil filter (mostly highway miles) and it "seemed" to be just fine, but I don't know what shape the engine was in at 150,000+ because he traded it off with 90,000 or so on it (and it was still running great)
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(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."

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#4568455 - 11/09/17 02:34 AM Re: Longest OCI's without a filter change [Re: 1JZ_E46]
DoubleWasp Offline


Registered: 05/21/12
Posts: 5236
Loc: Fort Lauderdale, FL
2007.5 Dodge Ram 3500
Cummins 6.7 Diesel
26K miles on single oil filter and oil. No top offs.

Oil: Schaeffer Supreme 7000 15w40
First: LuberFiner LF9028

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#4568587 - 11/09/17 08:16 AM Re: Longest OCI's without a filter change [Re: 1JZ_E46]
ZZman Offline


Registered: 03/17/08
Posts: 5789
Loc: Michigan
10,000 for me
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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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#4568597 - 11/09/17 08:27 AM Re: Longest OCI's without a filter change [Re: 1JZ_E46]
tomcat27 Offline


Registered: 06/25/09
Posts: 3564
Loc: Chicago, IL
46k on a Focus with the factory filter; then the engine puked. some friends bought the used car at a used car lot. I offerred to look it over in advance; they didn't see the need because it "looked clean". next day on the way back to school the motor roached. THEN I got to see the OEM filter. all rusty on the outside. nice. of course, you are likely looking for success stories... I would imagine, on a non-sludging engine, that 20k should not be a problem .
_________________________
2015 Rogue, 2014 Sentra, 2001 Camry, 2005 Starcraft, 1998 Dodge B1500
1996 Sebring Jx, 1984 F150, 1970 Cougar, 2013 XT250, 2010 Vstar, 2014 CTX1300

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#4568639 - 11/09/17 09:07 AM Re: Longest OCI's without a filter change [Re: 1JZ_E46]
SubieRubyRoo Online   content


Registered: 05/14/12
Posts: 1137
Loc: Winchester, Indiana
I'd think it depends more on the filter size and media than mileage. Engine history will be an important part. I don't think you'd ever find somebody with a brain to run a filter for 20k on a VW 1.8... My Fusion returns really consistent UOAs and I always change the filter with the oil change on it. Last UOA I have the results for was almost 14k on a Napa Platinum; awaiting results on the Napa Platinum on a 17.3k run. So far, my insolubles have always been 0.3 (except for two 0.4s on Amsoil EaO34 filters with shorter mileage) and I think that is what should be driving your filter change.

From what I understand, a filter "should" trap more of the insolubles up to the point that the media is saturated and you drive the filter into bypass mode because of the differential pressure across the media. After that, your insolubles would likely start to go up maybe not exponentially, but certainly much faster than if you were filtering it. This OCI I have a Microgreen on it, so we will see if the insolubles come down any due to the 'bypass' element in the MG.

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#4569179 - 11/09/17 07:02 PM Re: Longest OCI's without a filter change [Re: 1JZ_E46]
Vern_in_IL Offline


Registered: 06/25/14
Posts: 1885
Loc: IL
Originally Posted By: 1JZ_E46
Originally Posted By: Vern_in_IL
Kendall and an Ultra All THE WAY!


Details!


I simply forgot to change the oil, I do 8k oil changes and skipped one, and it was last winter.


Edited by Vern_in_IL (11/09/17 07:03 PM)
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#4569208 - 11/09/17 07:32 PM Re: Longest OCI's without a filter change [Re: 1JZ_E46]
JohnnyJohnson Online   content


Registered: 10/22/09
Posts: 2754
Loc: Wet side WA
6K on PUP 5w-30 and a Purolator Pure 1
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2004 Toyota Corolla 121758
Out: QSUD 5W-30 Purolator One 5030
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Out: T6 5W-40 M1-303
In: T6 5W-40 XG9100 73752 4-22-18

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