Any Harm Done?

[gtbigup01]

So apparently I was driving around in "Auto" instead of 2WD. I don't know if I've been doing this since new July, or if the knob was accidentally turned during my interior cleaning. Is there any harm in this?

[Imcrazy]

Nah you just wasted some gas.... No harm to the drivetrain, it just gives like 2% power to the front wheels unless slippage is sensed. 4 high an you'd do some damage on dry pavement in tight turns.

[gtbigup01]

Nah you just wasted some gas.... No harm to the drivetrain, it just gives like 2% power to the front wheels unless slippage is sensed. 4 high an you'd do some damage on dry pavement in tight turns.

 

Cool thanks.

[Doug_Scott]

Nah you just wasted some gas.... No harm to the drivetrain, it just gives like 2% power to the front wheels unless slippage is sensed. 4 high an you'd do some damage on dry pavement in tight turns.

It's not just tight turns where it creates issues, driving in a straight line on dry pavement will create issues over distance. No two tires are exactly the same circumference, tire pressures help define effective circumference, so over distance that difference will accumulate. The chassis will store that energy and it must be dissipated by slipping a tire. This will happen if vehicle transfer case is a locked 4wd mode. Auto mode is designed to handle that, 4wd high or low is not.

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[Donstar]

Many vehicles are in "Auto" all of the time.  No harm done.  If you accidentally left it in 4Hi you would have noticed it when cornering.

[i82much]

30 minutes ago, Doug_Scott said:

It's not just tight turns where it creates issues, driving in a straight line on dry pavement will create issues over distance. No two tires are exactly the same circumference, tire pressures help define effective circumference, so over distance that difference will accumulate. The chassis will store that energy and it must be dissipated by slipping a tire. This will happen if vehicle transfer case is a locked 4wd mode. Auto mode is designed to handle that, 4wd high or low is not.

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this is true.. it is also true that each time you fart, the earth warms up just a bit, and pepper has fly poop in it too.  so many things to keep you up at night!

[Doug_Scott]

this is true.. it is also true that each time you fart, the earth warms up just a bit, and pepper has fly poop in it too.  so many things to keep you up at night!

Problem with inserting sarcasm into a valid response is it negates the valid response. A lot of users may not understand how something works, and now they will think that my perfectly valid response is on par with your two statements. Nice going.

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[Mervkirwin]

Problem with inserting sarcasm into a valid response is it negates the valid response. A lot of users may not understand how something works, and now they will think that my perfectly valid response is on par with your two statements. Nice going.

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Nicely done, I agree with your statement 100%. Be safe


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[joshc64311]

8 hours ago, i82much said:

this is true.. it is also true that each time you fart, the earth warms up just a bit, and pepper has fly poop in it too.  so many things to keep you up at night!

Pepper has fly poop?! OMG 

[i82much]

5 hours ago, Doug_Scott said:

Problem with inserting sarcasm into a valid response is it negates the valid response. A lot of users may not understand how something works, and now they will think that my perfectly valid response is on par with your two statements. Nice going.

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the effect of occasionally driving your truck straight in 4x4 on dry pavement is within one order of magnitude of the impact of fly poop on the taste of pepper.  i've read several published SAE papers on it, and the fly poop is a bigger problem every time.

[Doug_Scott]

the effect of occasionally driving your truck straight in 4x4 on dry pavement is within one order of magnitude of the impact of fly poop on the taste of pepper.  i've read several published SAE papers on it, and the fly poop is a bigger problem every time.

Who drives without turning the steering wheel? Please provide a link to those SAE papers where they say driving in 4wd locked with different circumference tires is like tasting fly shit in ground paper, or any other ridiculous comparison. Driving in 4wd for 4 months may be occasionally to you, but to most others that does not mean occasionally. What does the owners manual state?

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[i82much]

19 minutes ago, Doug_Scott said:

Who drives without turning the steering wheel? Please provide a link to those SAE papers where they say driving in 4wd locked with different circumference tires is like tasting fly shit in ground paper, or any other ridiculous comparison. Driving in 4wd for 4 months may be occasionally to you, but to most others that does not mean occasionally. What does the owners manual state?

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http://www.latlmes.com/world/sae-tech-report-4x4-no-worse-than-fly-poop-1

 

 

[i82much]

Here's another one:

 

http://ow.ly/Bijr30gNJnh

[Doug_Scott]

Here's another one:
 
http://ow.ly/Bijr30gNJnh

Thanks for proving my point. BTW, anyone else reading this thread, save yourself sometime and ignore his links, they are just a 5 year olds attempt to deflect, welcome to my chihuahua list(all yap, no substance).

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[i82much]

i still chuckle to myself about your original comment.  that was cliff clavin-level stuff right there.  i liked how you worked in a little math to make yourself sound even smarter!

 

but the truth is, you have either got to do a ton of driving in 4x4 on dry ground, or completely ignore steering bind when you feel it, to do any harm.  and your tire pressures are not going to make you or break you on that deal unless you are practically driving around on a flat.  

 

so what you have done is to drastically exaggerate the risks involved in 4x4 driving, while throwing in an insignificant tire pressure factor just to make yourself sound like an engineer.  anyone who read your comment and did not appreciate how ridiculously nitpicky it was is now running around worried about utterly insignificant issues.