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Annnnnnd I let it idle

HSKR R/T

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There is no proof that idling causes lifter failures, just speculation based on the amount of cop cars with lifter failures so people start jumping to conclusions and think that cop cars = iding = failure. There is also no proof that idling doesn't cause failures, but there are other theories; cars that idle extensively are required to use the "extreme duty" maintenance cycle which is changing the oil at 320 hours. If a cop car runs 24/7, that means it should be getting oil changed every 2 weeks. If it runs half a day it needs to change every month. Many police depts don't follow that schedule, so the bad/dirty oil starts to form deposits on the needle bearings of the lifters and they sieze up, eventually the lifter takes out the cam lobe and its game over.

There are Rams that have over 1000 idle hours with no lifter failure (see "high mileage edition" in the "truck central" youtube channel), and some that fail with < 20,000 miles.

The lifters are primarily lubricated via pressurized oil galleys, not crank splash. This design has not changed since 2003 when the hemi was re-introduced, so if we needed to depend on crank splash for lifter lube then the pre 2009 hemis would be having lifter failures as well, which they don't; therefore it's not a crank/splash problem.

We have also seen an analysis of failed lifters/cams from a metallurgy specialist and he basically said that oil was present, but was not effective ("insufficient lubriscosity" IIRC).

Basically the best prevention is: change your oil frequently (< 8000 miles), use 100% synthetic, and if you're really into it (but ok with voiding warranty) run something like Redline 5w-30.

Another theory; the hemi's were originally designed for 5w-30, but dropped to 5w-20 to improve fuel efficiency. Nothing in the design changed when they dropped the oil weight, and the manual for a period of time even still "allowed" you to run the 30 weight. This theory says that the 20 is too thin and that would be partially backed up by the specialist report mentioned above.
He has spoken. No need for any further replies, especially if you have a differing opinion.
 

AV8OR

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There is concern of not idling too long because of the oil splash thing, not getting enough upper end lubrication due to the engine design. But they have these engines in police and work vehicles that may idle for hours daily, with no special consideration compared to civilian versions in terms of idle lubrication.

40 minutes is barely more than your average day being stuck in congested traffic in any busy city in the US. Heck, I spent literally 25 minutes yesterday in an In N Out drive thru line waiting for a couple of burgers and fries. Almost all of that idling with zero throttle since I'm just letting off the brake to creep forward in line.


Seen the Chick-fil-A drive thru line at lunch or supper time?
 

SD Rebel

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Seen the Chick-fil-A drive thru line at lunch or supper time?

Oh yeah, there are actually two locations in San Diego county that has both a Chick Fil-A and In N Out right next to each other. The line of cars is in the streets pretty much all the time.
 

JC4041

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Oh yeah, there are actually two locations in San Diego county that has both a Chick Fil-A and In N Out right next to each other. The line of cars is in the streets pretty much all the time.

They coned off half of the 2 lane JUST for In and Out...

1633844988670.png
because traffic doesn't suck enough at that damn light

1633845039637.png

It's not uncommon to see it backed up almost a mile (I know it's not a mile, but it's a long time for a damn hamburger no matter how good people say they are)

1633845270453.png
 

Rlaf75

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There are many circumstances where the engine idles for various amounts of time that you dont even really pay attention to like traffic jams, traffic lights, drive thru's and remote start warm ups. Change the oil regularly and dont waste another minute worrying about it.
 

WanderingRam

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While it's not ideal to idle for that long, I wouldn't worry about it.

I got mine with 50 miles on it about 3 years ago. I drove it for a couple weeks and put about 1,000 miles on it before I discovered there was already 80 hours of idle on the engine. My Hemi was broken-in at idle. I have a feeling most of this was at subzero temperatures too :mad: .
 

djevox

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There is no proof that idling causes lifter failures, just speculation based on the amount of cop cars with lifter failures so people start jumping to conclusions and think that cop cars = iding = failure. There is also no proof that idling doesn't cause failures, but there are other theories; cars that idle extensively are required to use the "extreme duty" maintenance cycle which is changing the oil at 320 hours. If a cop car runs 24/7, that means it should be getting oil changed every 2 weeks. If it runs half a day it needs to change every month. Many police depts don't follow that schedule, so the bad/dirty oil starts to form deposits on the needle bearings of the lifters and they sieze up, eventually the lifter takes out the cam lobe and its game over.

There are Rams that have over 1000 idle hours with no lifter failure (see "high mileage edition" in the "truck central" youtube channel), and some that fail with < 20,000 miles.

The lifters are primarily lubricated via pressurized oil galleys, not crank splash. This design has not changed since 2003 when the hemi was re-introduced, so if we needed to depend on crank splash for lifter lube then the pre 2009 hemis would be having lifter failures as well, which they don't; therefore it's not a crank/splash problem.

We have also seen an analysis of failed lifters/cams from a metallurgy specialist and he basically said that oil was present, but was not effective ("insufficient lubriscosity" IIRC).

Basically the best prevention is: change your oil frequently (< 8000 miles), use 100% synthetic, and if you're really into it (but ok with voiding warranty) run something like Redline 5w-30.

Another theory; the hemi's were originally designed for 5w-30, but dropped to 5w-20 to improve fuel efficiency. Nothing in the design changed when they dropped the oil weight, and the manual for a period of time even still "allowed" you to run the 30 weight. This theory says that the 20 is too thin and that would be partially backed up by the specialist report mentioned above.
Stop making sense- we won't have any of that around here...
 

Biga

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Oh yeah, there are actually two locations in San Diego county that has both a Chick Fil-A and In N Out right next to each other. The line of cars is in the streets pretty much all the time.
Same way at Chick Fil A, line moves pretty quick though. One thing about the Etorque is it not only shuts off at red lights but also while waiting in line at the drive though.
 

piening2150

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ScaryEnlightenedBobwhite-small.gif
JFC guys
 

silver billet

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Oh, you so funny. I bet you crack yourself up all the time. Probably should leave comedy to comedians

And you should leave your drama to the school girls. You left your first pithy little reply to me in this thread just because I left my opinion, not because it's wrong.

If you disagree with what I said in my post then point out where you do. No need to be bitter here just because you were wrong about our gear ratio discussion.

There was another guy who did that to me months after an argument, life is way to short to put up with that drama so if that's your thing then you're welcome to hang out with him in my blocked users list.
 

HSKR R/T

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And you should leave your drama to the school girls. You left your first pithy little reply to me in this thread just because I left my opinion, not because it's wrong.

If you disagree with what I said in my post then point out where you do. No need to be bitter here just because you were wrong about our gear ratio discussion.

There was another guy who did that to me months after an argument, life is way to short to put up with that drama so if that's your thing then you're welcome to hang out with him in my blocked users list.
Someone's a bit bitter. Tries calling me out for taking things personally, bit is taking a little joking way more personal. It's the internet, lighten up Francis.
 

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