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Subaru Crosstrek - 600,000 miles #5422923 05/06/20 07:11 PM
Joined: Nov 2002
Posts: 33,285
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buster Offline OP
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Link

Quote
Ok guys, I finally got off my butt and disassembled the old engine. I was actually very surprised at the results. If you've been following along, you know that I've been using Mobile1 extended performance 0W-20 along with Fram synthetic oil filters at 12,000 mile intervals for the full 600,000 miles. Ignoring the oil leaks, this engine looks great. The cylinder walls show no wear and don't even have a wear ridge at the top of the cylinder. The piston tops have a bit of carbon build up but nothing unusual. In the last days I was using a significant amount of oil and I can only contribute that to excessive wear on the oil rings. All of the bearings look great and the camshafts show very little scoring. Compression was fairly consistent with all cylinders with the exception of cylinder #3. After disassembly of the heads I found the the valves on #3 had more wear than the others and we're definitely burned resulting in cylinder #3 occassionally misfiring.
My take on this is that if it weren't for the burned valves on #3 cylinder and the oil rings wearing out, this engine would have easily reached a million miles. So maybe if someone at Subaru is listening, you might take a very hard look at what oil rings you are using. As for me, I'm sticking with 12,000 mile oil changes using Mobile1 extended performance and Fram synthetic oil filters. Hopefully I can get another 600,000 miles on this next engine.


Quote
Valve and piston carbon build up was actually far less than I actually expected. Apart from the burn't valve and normal Subi oil leaks, this engine doesn't look like it has more than 100k on it. This was even cleaner than I expected.


Engines like to be run. Run them often and they will last. The guy is a medical courier and drives 800 miles a day. That's insane.


2020 - Mazda CX-30 - Mobil 1 EP 0w20
2019 - Subaru Impreza - Dealer Oil
Re: Subaru Crosstrek - 600,000 miles [Re: buster] #5422932 05/06/20 07:19 PM
Joined: Aug 2017
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sloinker Offline
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We had a Volkswagen Beetle growing. Bought new in 1970 and sold in the mid 1990's. It had at least 600,000 miles on it using straight grade 30weight QS. Of course that was over the course of 4 or 5 engine replacements. I got to where I could drop the old engine swap over the engine accessories/shroud etc into the new longblock and reinstall in about 6-8 hours. Boxer motor, love it! Those engines looked decent except for the the bent/broken valves. Looked like 100-150k innards.

Last edited by sloinker; 05/06/20 07:21 PM.

'16 Tiguan TSI Vaico 5W40
'15 VW Golf TDI Red Line 5W30 Euro
'15 VW Golf Sportwagen TDI M1 ESP 5W30
'14 Dodge Grand Caravan 3.6 Valvoline 5W20 Semi Synthetic
'64 Plymouth Fury440 Pending
Re: Subaru Crosstrek - 600,000 miles [Re: buster] #5422936 05/06/20 07:21 PM
Joined: Apr 2018
Posts: 1,836
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Imp4 Online Content
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Quote
So maybe if someone at Subaru is listening, you might take a very hard look at what oil rings you are using. As for me, I'm sticking with 12,000 mile oil changes using Mobile1 extended performance and Fram synthetic oil filters. Hopefully I can get another 600,000 miles on this next engine.

600,000 mi?!?
If I were the Subaru engineer, I'd take a very hard look at it, congratulate myself, and not change a darn thing.

Re: Subaru Crosstrek - 600,000 miles [Re: buster] #5422970 05/06/20 07:43 PM
Joined: Jan 2009
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tig1 Offline
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Thanks for the share.


2007 Ford Fusion 258,000 miles
M1 5-20HM
2017 Ford Fusion 91K
M1 0-20EP
10,000 mile OCIs on both engines
M1 ATF and M1 LV HP ATF
M1 10-30 in all OPE
MC filters

Re: Subaru Crosstrek - 600,000 miles [Re: buster] #5423012 05/06/20 08:13 PM
Joined: Mar 2013
Posts: 1,062
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laserred96gt Offline
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[Linked Image]


2017 4Runner Limited, 52k, magnatec 0w20.
04 E-150, 4.6, 248K, Synblend 5w20.
11 Camry 2.5, 74K, PU 5w20.
Re: Subaru Crosstrek - 600,000 miles [Re: buster] #5423026 05/06/20 08:40 PM
Joined: Oct 2007
Posts: 2,186
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dareo Offline
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How many CVT transmissions is what we all wanna know


2019 VW Golf Alltrack, 2018 Regal TourX, 2016 GMC 1500 SLT 6.2, 2007 GMC Savana 6.6 Duramax
Re: Subaru Crosstrek - 600,000 miles [Re: dareo] #5423035 05/06/20 08:50 PM
Joined: Mar 2019
Posts: 82
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Coastie05 Offline
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Originally Posted by dareo
How many CVT transmissions is what we all wanna know

Bingo! I'm curious about this too.


2018 Honda Pilot EX AWD
2013 Honda CRV EX
2014 Honda Civic LX (sold)
2001 Acura Integra GSR (sold)
Re: Subaru Crosstrek - 600,000 miles [Re: dareo] #5423045 05/06/20 09:02 PM
Joined: Apr 2013
Posts: 6,566
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gregk24 Offline
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Originally Posted by dareo
How many CVT transmissions is what we all wanna know


Yes, this! Though any transmission lives a pretty life on the highway.


2012 Honda Accord EX-L K24z3
61,xxx miles
PPPP 0w20 / Fram Ultra

2014 VW Jetta SE 1.8T ea888
54,xxx miles
Castrol Edge 0w40 / OEM filter
Re: Subaru Crosstrek - 600,000 miles [Re: buster] #5423148 05/07/20 02:37 AM
Joined: Mar 2008
Posts: 2,770
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Ws6 Offline
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Posts: 2,770
Originally Posted by buster
Link

Quote
Ok guys, I finally got off my butt and disassembled the old engine. I was actually very surprised at the results. If you've been following along, you know that I've been using Mobile1 extended performance 0W-20 along with Fram synthetic oil filters at 12,000 mile intervals for the full 600,000 miles. Ignoring the oil leaks, this engine looks great. The cylinder walls show no wear and don't even have a wear ridge at the top of the cylinder. The piston tops have a bit of carbon build up but nothing unusual. In the last days I was using a significant amount of oil and I can only contribute that to excessive wear on the oil rings. All of the bearings look great and the camshafts show very little scoring. Compression was fairly consistent with all cylinders with the exception of cylinder #3. After disassembly of the heads I found the the valves on #3 had more wear than the others and we're definitely burned resulting in cylinder #3 occassionally misfiring.
My take on this is that if it weren't for the burned valves on #3 cylinder and the oil rings wearing out, this engine would have easily reached a million miles. So maybe if someone at Subaru is listening, you might take a very hard look at what oil rings you are using. As for me, I'm sticking with 12,000 mile oil changes using Mobile1 extended performance and Fram synthetic oil filters. Hopefully I can get another 600,000 miles on this next engine.


Quote
Valve and piston carbon build up was actually far less than I actually expected. Apart from the burn't valve and normal Subi oil leaks, this engine doesn't look like it has more than 100k on it. This was even cleaner than I expected.


Engines like to be run. Run them often and they will last. The guy is a medical courier and drives 800 miles a day. That's insane.

Wow! And I thought my 30-35k mi per year was a lot!
My dad used to drive nearly as much as that guy. His engines made it 250-350k miles. 1980s and 1990s Ford SB v8s, and some 460s.

Re: Subaru Crosstrek - 600,000 miles [Re: buster] #5423225 05/07/20 07:39 AM
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Barkleymut Offline
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that 11.42 hours of driving *IF* he can average 70 mph.....not saying that it cannot be done, but how in the world could anyone drive that much?


09 Vue 2.4L 4spd AT/ 09 Flex 3.5L / 96 F150 5.0 5speed / 07 Mustang GT auto
Re: Subaru Crosstrek - 600,000 miles [Re: Barkleymut] #5423234 05/07/20 07:49 AM
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supton Offline
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Originally Posted by Barkleymut
that 11.42 hours of driving *IF* he can average 70 mph.....not saying that it cannot be done, but how in the world could anyone drive that much?

I'm guessing it's a bit like those people who go into pre-med. Only some can hack the long hours of study followed by a few years of residency. It's not for everyone.


2011 Toyota Camry, base, 2.5L/6MT, 205k, hers
2010 Toyota Tundra DC, 4.6L/6AT, 159k, ours
1999 Toyota Camry LE, 2.2L/4AT, 225k, his
Re: Subaru Crosstrek - 600,000 miles [Re: buster] #5423372 05/07/20 11:47 AM
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Donald Offline
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Did you re-ring the engine and send the head out.


2015 Ford F-250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)
Re: Subaru Crosstrek - 600,000 miles [Re: Imp4] #5424188 05/08/20 03:18 PM
Joined: Jun 2002
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Al Offline
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Originally Posted by Imp4
Quote
So maybe if someone at Subaru is listening, you might take a very hard look at what oil rings you are using. As for me, I'm sticking with 12,000 mile oil changes using Mobile1 extended performance and Fram synthetic oil filters. Hopefully I can get another 600,000 miles on this next engine.

600,000 mi?!?
If I were the Subaru engineer, I'd take a very hard look at it, congratulate myself, and not change a darn thing.

This


Re: Subaru Crosstrek - 600,000 miles [Re: buster] #5424930 05/09/20 05:33 PM
Joined: May 2004
Posts: 881
2002 Maxima SE Offline
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"Link" in the OP goes to a New Post. Does anyone have the link to this story/thread?


2000 Ford Taurus SE Wagon - 152K
2013 Mazda CX-5 GT - 45k
2015 Subaru Outback Limited - 50k
Re: Subaru Crosstrek - 600,000 miles [Re: 2002 Maxima SE] #5426725 05/11/20 07:26 PM
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Vladiator Offline
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Originally Posted by 2002 Maxima SE
"Link" in the OP goes to a New Post. Does anyone have the link to this story/thread?

Here is the link to the Subaru Crosstrek, over 600,000 miles on 1st engine, as a medical courier. Found it with a quick Google search.


0W20 in summer at Death Valley is as good as 25w70 in winter at Alaska. Both can be done, neither is good for the engine long term. Oil grade is chosen by CLIMATE and OPERATING CONDITIONS.
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