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MPG, Part 2
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Topic: MPG, Part 2 (Read 41301 times)
Irish_Alley
Tim
Global Moderator
Senior Member
Posts: 13319
Family is not an important thing. It's everything.
Re: MPG, Part 2
«
Reply #120 on:
March 19, 2020, 07:50:34 AM »
be cautious of the AFM on those causing collapsed lifters. from what i understand its not a matter of "if" but "when", its somewhat of a easy fix and you might be able to luck out and prevent it from happening. theres a few youtube vids on it
https://www.youtube.com/watch?v=pP7I5tbXsfw
you can even disable it. that whole thing about dropping to 4 cylinders sounds good but imo isnt practical. also you might notice your battery volts dropping to 12.8 or so and this is normal and GMs attempt to save some millage
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If you can’t tell yourself the truth, who can you tell it to?~Irish_Alley
When you have eliminated the impossible, whatever remains, however improbable, must be the truth ~Sherlock Holmes
Stewart G Griffin
Senior Member
Posts: 3324
Re: MPG, Part 2
«
Reply #121 on:
March 20, 2020, 09:14:23 PM »
i don't think the LH9 5.3 has any of that "AFM" stuff. It does have variable valve timing and flex fuel capability. i need to brush up on my LS knowledge. i've been very busy lately.
i hear AFM/Displacement on demand isn't good for the engine long-term.
All these tricks to try to get mpg don't seem to pay off in the long run?
The turbo 4 in the silverado can't tow as well as the 4.3, 5.3 etc. i will try to locate the article concerning DOD not being good for the engine long-term.
Diesel seems to work great for towing, but then there's the high-initial cost which may never pay for itself unless you do a ton of driving.
You can't change the laws of physics.......
«
Last Edit: March 20, 2020, 09:18:38 PM by Stewart G Griffin
»
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Stewart G Griffin
Senior Member
Posts: 3324
Re: MPG, Part 2
«
Reply #122 on:
March 28, 2020, 02:36:53 PM »
Still on the colorado
271 miles / 16.25 gallons = 16.68
OH NO.......
$2.599 per GALLOn regular at exxon, $42.24 to fillup.
Now, i was late one day for work, so i was kind of hammering it and maybe that affected it. Side note at 75 it still rpms below 2500rpm.
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Stewart G Griffin
Senior Member
Posts: 3324
Re: MPG, Part 2
«
Reply #123 on:
April 04, 2020, 06:22:35 PM »
colorado
317.5 / 16.63 gallons = 19.02 mpg
$2.099 per gallon regular at exxon. $34.91 to fillup
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Stewart G Griffin
Senior Member
Posts: 3324
Re: MPG, Part 2
«
Reply #124 on:
May 15, 2020, 06:34:08 PM »
colorado
329.7 miles / 18.067 gallons = 18.24 mpg
$1.859 per gallon regular at exxon, $33.59 to fillup
i was late one day for work. i think the colorado is speed limited to 99/100 mph? i can't confirm this.
i discovered that the 5.3 LS DOES have some top end.
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fitz
Senior Member
Posts: 2084
Re: MPG, Part 2
«
Reply #125 on:
May 21, 2020, 08:48:04 AM »
With the long weekend coming up have you considered dropping the 4.3 in the Colorado and checking the mpg's?. Ha ha, how are you enjoying the Colorado so far?
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MPG, Part 2