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post #11 of 16 (permalink) Old 09-24-2019, 07:58 PM
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Wow. . good record for that 2.4L.


But wait. . no cracked exhaust manifolds? So many have had that here.

2019 GMC Acadia SLT-1 3.6L LGX V6 - Build Date: 4-11-2019 - Bought 6-22-2019

SOLD - - 2015 Equinox LTZ 3.6L FWD Champagne Silver Metallic *Build Date 1-08-2015 *

SOLD with *38,865 miles 8-15-2019.
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post #12 of 16 (permalink) Old 09-24-2019, 09:33 PM
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The scatter-plot of MPG vs avg speed is rather interesting. There doesn't seem to be any statistically significant trend taking place - which surprises me.

2018 Equinox LT1 1.5 L 4 cyl, AWD, S/R Cajun Red Tintcoat/Black

2010 Equinox LTZ 2.4 L 4 cyl, FWD, S/R Cardinal Red/Black
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post #13 of 16 (permalink) Old 09-25-2019, 12:33 PM
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Quote:
Originally Posted by highmileagehopeful View Post
Ok, I did a quick search. @mgmsequinox broke 333k with his 2012 Equinox 4-cyl in June, and @alaric23 broke 400k with his 2010 Terrain V6 in December. It looks like @mgmsequinox does a lot of his own work...I can't claim the same.
I must've missed the alaric23 post ... but then again - he had the V6, which is plausible. That engine appears to be solid. (now watch me snap a timing chain on my ride home tonight)

But you guys with that 2.4L engine going 300,000+ ... if this is real ... then maybe it wasn't bad rings, per-se, but how the rings ended up "seating"?? Maybe if everyone had run their 2.4L engines hard, racking up the miles fast and furious, it would've mitigated the Consumption issue?

Just a guess (or wishful thinking)...
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post #14 of 16 (permalink) Old 09-25-2019, 01:01 PM
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Who would have known a direct injected 2.4 could run so long?

I unloaded my 2011, 2.4 after 5 years and 7,000 miles because of the horror stories relating to this engine, and the fact the high pressure pump was dumping raw fuel into the crankcase.

After discovering that the fuel pump had three revisions in around a years time, I decided I wanted this disaster gone. This engine was released before adequate testing had been done; so many marginal internal components that fail prematurely.

I still believe that the root cause of so many 2.4 problems stem from the engine oil contamination by fuel, and not necessarily because of faulty components like chains, actuators, pistons/rings, etc. Still the PCV system was poorly conceived and it alone causes many problems, including rear main engine seal failures.

In summary; I'm glad that I don't still have mine, but am intrigued that some of you have the fortitude to keep one of these running for so many miles! I'm impressed!

.

2019 Chevy Equinox; 2.0 - LT - FWD - Silver Ice/Redline - Purchased 10/20/2018; Mills Chevrolet, Davenport IA
2016 Chevy Equinox; 3.6 - LTZ-AWD - Black/Black - Purchased 7/7/2016; Mills Chevrolet, Davenport IA
2017 Chevy Malibu; 1.5 - LT - Pepperdust - Purchased 8/2017; Green Chevrolet, East Moline, IL
2009 Chevy Silverado; 5.3 -LT - 4WD - Ext. Cab - Granite Met. - Purchased 02/2009; Green Chevrolet, East Moline IL

Last edited by garbec01; 09-25-2019 at 01:05 PM.
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post #15 of 16 (permalink) Old 09-26-2019, 12:44 AM Thread Starter
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Quote:
Originally Posted by RIT333 View Post
The scatter-plot of MPG vs avg speed is rather interesting. There doesn't seem to be any statistically significant trend taking place - which surprises me.
I know, right? I'd expected there to be a trend, but...nope.

Here are the other two scatter plots I've maintained over the vehicle life.

The first plot is the car-calculated MPG vs. my hand-calculated MPG per tank. As you can see, there is a statistically significant trend that the car calculation is too high.

The second plot is my hand-calculated MPG per tank vs. time. There was neither a point in the first 100k where MPG increased because the engine had been "broken in," nor a point in the last 100k when MPG decreased due to age or some specific lifetime wearing. For a vehicle that was supposed to be 22 mpg city / 32 mpg highway, and given that I trend towards highway, the lifetime mean of 24.7 mpg has been low and thus disappointing. However, on a positive note, even at 250k+ I can still get 32-35 mpg highway on some fill-ups.
Attached Images
File Type: jpg actual vs calc mpg.jpg (84.2 KB, 6 views)
File Type: jpg date vs actual mpg.jpg (94.3 KB, 7 views)

2010 Equinox 2LT 2.4L 4-cyl FWD Cyber Gray Metallic -- Bought 03/22/2010
Sold 03/22/2010 -- 1999 Honda CRV with 239,101 miles
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post #16 of 16 (permalink) Old 09-26-2019, 12:47 AM Thread Starter
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Originally Posted by JayTee2014 View Post
But wait. . no cracked exhaust manifolds? So many have had that here.
Pleasant surprise: Nope.
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2010 Equinox 2LT 2.4L 4-cyl FWD Cyber Gray Metallic -- Bought 03/22/2010
Sold 03/22/2010 -- 1999 Honda CRV with 239,101 miles
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