MPG drop by 30miles+
Thread Starter
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Champion
Joined: Sep 2013
Posts: 2,724
Likes: 153
OK Ralph. Thank You
Hey You, are you saying I can't trust Rock Auto rec they were the best quality?
I just checked before writing that they changed the way they grade them to 'Xtimes longer lasting than copper'. They have the iridium at 4x. I am pretty sure they had them listed as economy, daily driver, premium etc the way they do most other things when I bought them.
Hey You, are you saying I can't trust Rock Auto rec they were the best quality?
I just checked before writing that they changed the way they grade them to 'Xtimes longer lasting than copper'. They have the iridium at 4x. I am pretty sure they had them listed as economy, daily driver, premium etc the way they do most other things when I bought them.
Champion
Joined: Jan 2013
Posts: 4,737
Likes: 374
From: Northwest Louisiana
Iridiums don't light up as well as copper does; OTOH, you don't have to replace them as often.
It's a cost/benefit analysis.
For most people, unless you DO put like 40,000 miles a year on the truck, even platinum isn't that great a deal; copper lights up easier so it's the choice for maximum fuel economy and power.
DO note, however, that the performance range on most motors is a 1% to 3% variance ...
RwP
It's a cost/benefit analysis.
For most people, unless you DO put like 40,000 miles a year on the truck, even platinum isn't that great a deal; copper lights up easier so it's the choice for maximum fuel economy and power.
DO note, however, that the performance range on most motors is a 1% to 3% variance ...
RwP
Administrator
Joined: Apr 2010
Posts: 87,403
Likes: 4,214
From: Clayton MI
OK Ralph. Thank You
Hey You, are you saying I can't trust Rock Auto rec they were the best quality?
I just checked before writing that they changed the way they grade them to 'Xtimes longer lasting than copper'. They have the iridium at 4x. I am pretty sure they had them listed as economy, daily driver, premium etc the way they do most other things when I bought them.
Hey You, are you saying I can't trust Rock Auto rec they were the best quality?
I just checked before writing that they changed the way they grade them to 'Xtimes longer lasting than copper'. They have the iridium at 4x. I am pretty sure they had them listed as economy, daily driver, premium etc the way they do most other things when I bought them.
Registered User
Joined: May 2019
Posts: 12
Likes: 1
From: Somewhere my love
Someone sucked out some petro
So I usually run the tank down before I fill. I zero out the trip odo each time. I usually have about a gallon left when I ht 320 miles. which means I have about another 15 miles in it.
Yesterday i was going to get gas after shopping It was at 295 when it ran out in a busy intersection. Some kids helped me or i would have been screwed I had no phone.
What would cause that drastic a drop in MPG's in one tank? There were no signs of decline or poor running. I did cap wires plugs rotor in the last 1K and not long before that I put in a new O2 sensor. I haven't looked at it since I git home yesterday after noon. Oh yea 22gal tank
Yesterday i was going to get gas after shopping It was at 295 when it ran out in a busy intersection. Some kids helped me or i would have been screwed I had no phone.
What would cause that drastic a drop in MPG's in one tank? There were no signs of decline or poor running. I did cap wires plugs rotor in the last 1K and not long before that I put in a new O2 sensor. I haven't looked at it since I git home yesterday after noon. Oh yea 22gal tank
Grand Champion
Joined: May 2019
Posts: 5,146
Likes: 721
From: S.W. Indiana
I had a little snot do that to a Mercedes sedan I had once. I drove two miles home and lost 1/2 a tank of fuel over night. He was driving down the road when all the diesel got into his injectors. Wiped out his injectors and fuel pump. Too bad that little Honda wasn't using nitrous when it did it. It might have blown the heads off.
Last edited by ol' grouch; Mar 9, 2020 at 07:46 PM. Reason: i kant spel wurth a durn.
Thread Starter
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Champion
Joined: Sep 2013
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Likes: 153
Update.
Sorry didn't follow all instructions about not letting it run down and I have not put in new plugs etc since what I have are newish on miles not time in service. I ran it down until the light went on again. I'm gonna blame the quarantine.
Filled up yesterday. Took 19.2 gal which works out to 14.7mpg (283M on trip odo)
Which leaves me at 320+ for the full tank if I had to run it down further. That makes it back to "normal" for this truck. (94 Sport 2wd 3.9) I have to think it is down to my aggressive driving, low pressure in tires and bad gas quality that I ran out so many miles sooner last tank.
Sorry didn't follow all instructions about not letting it run down and I have not put in new plugs etc since what I have are newish on miles not time in service. I ran it down until the light went on again. I'm gonna blame the quarantine.
Filled up yesterday. Took 19.2 gal which works out to 14.7mpg (283M on trip odo)
Which leaves me at 320+ for the full tank if I had to run it down further. That makes it back to "normal" for this truck. (94 Sport 2wd 3.9) I have to think it is down to my aggressive driving, low pressure in tires and bad gas quality that I ran out so many miles sooner last tank.