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Grumpy Bear

Grumpy Bears 2015 Silverado 2WD

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There’s nothing hidden is Grumpy’s quest for gas mileage. There’s several threads explaining how and why. People on here have learned how to prolong the life of transmissions in one of his threads as an example. The fact he drives the speed limit shouldn’t be caused for bashing. Most people don’t realize the legal minimum speed on an interstate is 40 MPH. This isn’t a socialist state. Just because you want doesn’t require everyone to fall in line. I travel a lot. There are areas I want to hit before rush hour. I leave earlier. I don’t drive faster. We have to allow people to drive in their comfort zone. Not in force our will on them.


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Not bashing the speed limit. His thread history is missing the point. To post a claim to people, who may or may not have the history of the build, with a mileage number of a modified vehicle in a stock thread is dishonest. To post mileage attained only through hypermiling techniques so far out of normal driving in a stock thread, is dishonest.

I don’t care what he does for his own personal gains. I care that he made a statement that the 2.7’s mileage is worse than his, didn’t give the facts, and then acts like that is reason enough to hate the 2.7. His blatant use of head in sand regarding the capabilities motor is astounding to me. I’m not even huge on the motor, because I tow a lot. It’s ok to be old school. I have nostalgia for clicky 100MB hard drives and tone driven BBS. But I don’t pretend that the old stuff I love is superior in almost any way to the modern stuff.
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Not bashing the speed limit. His thread history is missing the point. To post a claim to people, who may or may not have the history of the build, with a mileage number of a modified vehicle in a stock thread is dishonest. To post mileage attained only through hypermiling techniques so far out of normal driving in a stock thread, is dishonest.

I don’t care what he does for his own personal gains. I care that he made a statement that the 2.7’s mileage is worse than his, didn’t give the facts, and then acts like that is reason enough to hate the 2.7. His blatant use of head in sand regarding the capabilities motor is astounding to me. I’m not even huge on the motor, because I tow a lot. It’s ok to be old school. I have nostalgia for clicky 100MB hard drives and tone driven BBS. But I don’t pretend that the old stuff I love is superior in almost any way to the modern stuff.

You may not have read his threads. He generally sticks to lower speed limit roads. He cooled his trans temp, and lower his truck, wow. Most people who post their mileage usually show 25 mile readings, he’s showing lifetime. More honest reading I would say. As far as being skeptical, I lived through and owned 5.7 diesels, 62, 65s, 8-6-4 caddy’s. He has confidence in cylinder deactivation, I don’t. So if he’s doubting the boosted 4, I pay attention. There’s a few years of posting, pretty knowledgeable.


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4 hours ago, heymrdjCW said:

You have claimed that people only concentrated on speed. Yet when rebutted you remain quiet in the other points. The problem was your ridiculous claim of mileage in the other thread. A claim WITHOUT disclosing that your truck is heavily modified to one purpose, fuel efficiency. Dishonest at best. Now if you want to give fuel numbers for a stock 19 V6 like I had, but with your driving methods, those numbers could be taken for debate.

 

1.) I have claimed nothing of the sort. Been very forthcoming I'd say. Presently 38 pages of explanation of what my truck is or isn't. No deceit whatsoever. You claim of dishonesty is false...facts are in evidence. And in more than these 38 current pages. I do not hide.  

 

2.) Stated several times I don't Hyper-Mile. Your claim is false. In print multiple times in multiple threads. I drive moderately. I drive legally. I do not Hyper-Mile. 

 

3.) Modified, yes, Heavy modification 'for one expressed purpose"? Not really. This points to the probability you haven't actually read this thread. The fact that a modification for one purpose also suits the goal of another purpose isn't coincidence, it's physics at work. 

 

All I know about you presently is that you haven't read this tread. You are therefor speaking without knowledge.  As you haven't asked a serious question it would seem you interest isn't to learn anything or share anything to further the threads goals but to promote you own agenda as a guest in someone else's thread. Which makes you a rude guest. 

 

 

 

 

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1.) I have claimed nothing of the sort. Been very forthcoming I'd say. Presently 38 pages of explanation of what my truck is or isn't. No deceit whatsoever. You claim of dishonesty is false...facts are in evidence. And in more than these 38 current pages. I do not hide.  
 
2.) Stated several times I don't Hyper-Mile. Your claim is false. In print multiple times in multiple threads. I drive moderately. I drive legally. I do not Hyper-Mile. 
 
3.) Modified, yes, Heavy modification 'for one expressed purpose"? Not really. This points to the probability you haven't actually read this thread. The fact that a modification for one purpose also suits the goal of another purpose isn't coincidence, it's physics at work. 
 
All I know about you presently is that you haven't read this tread. You are therefor speaking without knowledge.  As you haven't asked a serious question it would seem you interest isn't to learn anything or share anything to further the threads goals but to promote you own agenda as a guest in someone else's thread. Which makes you a rude guest. 
 
 
 
 

You mentioned above regarding the bones not being chewed, I’ve attempted to get answers on the bones, you have not replied.

You came to the 2.7 thread and posted your 4.3L mileage being better, stating none of these facts regarding your build. So I came to find your build and I see your question regarding these bones. If you can’t see the dishonesty in that, I can’t help you. Again, when you make a claim in a knowingly stock for stock thread. If we’re talking about changing transmission , lowering the truck, changing oil weight, and turning off the A/C on a 2.7, it’d be a great comparison. Maybe someone could try that.

Going without A/C and things like that is hyper-miling. Nothing wrong with it, when done legally, as you’re doing. It is hypermiling though.

Just semantics I guess. You do you. It’s a neat build.

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Let's go ahead and reply to  "Balance" as heymrdjCW couldn't have missed the point more if he was throwing darts in another room.

 

Setting the table.

 

US government site says this trucks national average fuel efficiency is 17 mpg

Peppers life time average is 27 mpg

Google search say average miles/year are 13,500 (rounded)

Google search says average wage in the US is  $22.63 / hour

Current fuel prices $2.75 a gallon. 

Started driving when I was 16 and lets just say we make the end at retirement age, 66 so 50 years. 

 

 

Total miles driven 675,000 miles. Difference in fuel efficiencies yields a life time price difference of $40,441.18. 

At the national average wage that is 1787 hours but wait you have to pay taxes to clear that number and that is 30% more for most of us so now 2323 hours. But wait there is more. Wage compression over the last 50 years has taken 40% out of you buying power so now 3250 hours. 

 

That is 1 YEAR,  6 MONTHS and THREE WEEKS you were away from you family to pay for your waste. I might be driving yet another 30 years so and 60% to that number. Add to that the numbers for not buying one or two more vehicles and your wasting years of you life to get somewhere faster oh so mush slower. 

 

That is allot of 30 minute sessions. Think I'll take the extra time to get there legally and safely and spend a few less years working

 

FYI heymrdjCW.  Your now 'Ignored" I suggest you do the same. I don't do irrational and tired of repeating myself. 

 

 

 

 

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90,198 Mile Service

 

This is a partial service. Just the oil change today. I've traded SAE grade from 0W20 to 0W30. Still Red Line High Performance. New insert in the K&P Filter. 

 

I've voiced concerns of late (since the weather got warmer) about oil pressure seeming a bit low. As we learned that the lions share of fuel efficiency comes from the 0W instead of the W30 it seemed right to test both ideas at the same time. The efficiency will be tested over time as usual but pressure was a different matter and the early result is very positive. 

 

While the operational pressure was fine the test pressures was of concern. They should be warmed up and fresh oil. (Minimums) 

 

22 psi @ 1,000 rpm

30 psi @ 2,000 rpm

33 psi @ 3,000 rpm

 

These are scan tool readings. We will be hooking up a proper test gauge Wednesday when the service is completed. 

 

With the 0W20:

 

25 psi @ 1,000 rpm

25 psi @ 1,500 rpm

27 psi @ 2,000 rpm but would fade after about a minute to 25 psi. 

30 psi @ 3,000 rpm but would fade after about a minute to 25-27 psi. 

Wide open second stage pressure over 5,000 rpm hit 52 psi then fade to a bit under 50 psi. The fade is my concern

 

With the 0W30:

 

25 psi @ 1,000 rpm (no change)

25 psi @ 1,500 rpm (no change) This is also the top of my normal cruse speed rpm. 

29 psi @ 2,000 rpm ( plus 2 psi and fade free)

33 psi @ 3,000 rpm ( plus 3 psi and fade free) 

WOT untested as of yet. Will report later. 

 

On the dash gauge this change is nearly imperceptible. Less than half a needle width. 

 

So what we have/had going on is 'froth'. The lighter oil will froth at higher rpm. As soon as the rpm is below 1500 rpm pressure settle right in. 

 

Driving as I do I could have done this forever.  

 

*W20 could be trouble for a more aggressive driver

 

This IS NOT an about face but facts and data driving changes for the better. 0W30 it will be. 

Edited by Grumpy Bear

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0W20 vs 0W30 Road Test Result

5/17/2019

 

Test was a 100 mile loop of Interstate I-39. 25 miles of State Road 251 and two hard passes on a county blacktop. 

 

Final hot soaked oil temperature is about the same. To close to call different. Plus or minus 1* depending on speed, gear and rpm. 

 

Much steadier pressure indication but only about 2 psi higher during first stage operation. That is below the 3600 rpm second stage trigger point. Absolutely no pressure fade and about half the drift. 2-3 psi instead of 5-6 psi.  Things get interesting when you pin her ears back. 

 

0W20 would hit about 52 psi and then drift back quickly to roughly 48 psi at the top of each gear with the motor shifting around 5,400 rpm. 

 

0W30 it hit 56 psi and held it. Oddly the dash gauge says no change at all at peak rpm. At hot idle the 0W30 has an indicated 3 psi advantage on both the Scan Gauge and the dash gauge. At 1375 rpm (55 mph) it's about a half a needle different. 30W higher. 

 

During the winter months this was not an issue I noticed but once air temperatures got over 80 F it got uncomfortable. That dash gauge isn't much more than a bad idiot light. IMHO.

 

5/18/2019

 

Ordered 170 F thermostat from Reisch  Performance. A Dayco I believe. Previous JET 170 F unit yielded best efficiency number to date and lowest running oil temperature without using an additional cooler. 

 

 

Edited by Grumpy Bear

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