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Re: Best Gas Mileage OIl [Re: sloinker] #5186210 08/13/19 05:08 PM
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CR94 Offline
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Originally Posted by sloinker
... Back in the day Arco tried graphite and it failed due to it clogging up passages and caused engine failure. ...
That never happened or even threatened to happen when I used it for near 100k continuously.


2011 Toyota Prius now at 102K
1981 Mazda GLC (323) retired at 606K
1972 Subaru DL retired at 190K
1954 Chevrolet retired at 121K
Re: Best Gas Mileage OIl [Re: ARB1977] #5186216 08/13/19 05:20 PM
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dave1251 Online Happy
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Originally Posted by ARB1977
Only way to improve fuel economy is the driver.



This is the most important factor.


make the inside of your engine oil cap white.
don't use.
Re: Best Gas Mileage OIl [Re: cwhard] #5186226 08/13/19 05:30 PM
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Garak Online Content
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Aside from what ARB1977 said, the only other difference will be the lowest HTHS oil that still meets the requirements of your engine, and you'll never be able to calculate the difference in the real world.


Plain, simple Garak.

2008 Infiniti G37 - Shell ROTELLA T6 Multi-Vehicle 5w-30, Wix 57356
1984 F-150 4.9L - Quaker State GB 10w-30, Wix 51515
Re: Best Gas Mileage OIl [Re: cwhard] #5186228 08/13/19 05:38 PM
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kstanf150 Online Content
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There is no BEST oil for MPG
Impossible to repeat and duplicate every single event during the course of a trial run on each brand tried on the street.
Can’t do it
Bolt an engine to a dyno in a controlled room
And MAYBE just maybe one brand over another will tweak out a small gain

Re: Best Gas Mileage OIl [Re: cwhard] #5186241 08/13/19 05:57 PM
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ZeeOSix Offline
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If every factor except oil was held constant, then 0W-8 oil would give better gas mileage. That's the whole drive of thinner oils - ie, less shear friction.

As far as oil formulation in the sane viscosities from the major oil blenders, I highly doubt you could measure much if any difference if all other factors were held constant. The viscosity has a stronger influence on engine drag then the oil formulation.

Re: Best Gas Mileage OIl [Re: cwhard] #5186276 08/13/19 06:32 PM
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tblt44 Offline
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If its measurable I would say the thinist of the recommended grade in full synthetic.


2003 Avalanche Z71 5.3
2006 Tahoe 5.3
1989 Yamaha moto 4 250
2004 Key Largo w/70 Yamaha 2 stroke
Re: Best Gas Mileage OIl [Re: tblt44] #5186300 08/13/19 07:03 PM
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Originally Posted by tblt44
If its measurable I would say the thinist of the recommended grade in full synthetic.


What does full synthetic have in terms of additives that results in less friction than a similarly formulated (ie, additives) conventional oil?

If you want to reduce friction then adding something like Liqui Moly Ceratec has more influence on engine friction level than different standard motor oil formulations.

Re: Best Gas Mileage OIl [Re: CR94] #5186310 08/13/19 07:14 PM
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sloinker Offline
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Originally Posted by CR94
Originally Posted by sloinker
... Back in the day Arco tried graphite and it failed due to it clogging up passages and caused engine failure. ...
That never happened or even threatened to happen when I used it for near 100k continuously.


I developed a rod knock in a vehicle using the Arco graphite. I haven't looked but remember ARCO pulling it because of too many lawsuits resulting in them buying too many engines. Maybe I'm mistaken.


'16 Tiguan TSI Ravenol VST 5W40
'15 VW Golf TDI Ravenol VMP 5W30
'15 VW Golf Sportwagen TDI VMP 5W30
'14 Dodge Grand Caravan 3.6 Red Line Blue Label 5W20
'64 Plymouth Fury440 Red Line Blue Label 10W40
Re: Best Gas Mileage OIl [Re: sloinker] #5186325 08/13/19 07:35 PM
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GumbyJarvis Online Happy
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Originally Posted by sloinker
Originally Posted by CR94
Originally Posted by sloinker
... Back in the day Arco tried graphite and it failed due to it clogging up passages and caused engine failure. ...
That never happened or even threatened to happen when I used it for near 100k continuously.


I developed a rod knock in a vehicle using the Arco graphite. I haven't looked but remember ARCO pulling it because of too many lawsuits resulting in them buying too many engines. Maybe I'm mistaken.


https://www.csmonitor.com/1980/1008/100856.html

——

We’re getting kinda off topic, lol. But anyway to the OP, motor oil is just one factor in increasing MPGs and the results are usually so minimal you’ll really not see a difference


2018 RAM 1500 SLT 5.7L HEMI 19K
Schaeffers 5w20 - Mahle OC 614

Disabled US Army Vet
OEF 2013-2014
Re: Best Gas Mileage OIl [Re: GumbyJarvis] #5186328 08/13/19 07:41 PM
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sloinker Offline
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Originally Posted by GumbyJarvis


Originally Posted by sloinker
Originally Posted by CR94
Originally Posted by sloinker
... Back in the day Arco tried graphite and it failed due to it clogging up passages and caused engine failure. ...
That never happened or even threatened to happen when I used it for near 100k continuously.


I developed a rod knock in a vehicle using the Arco graphite. I haven't looked but remember ARCO pulling it because of too many lawsuits resulting in them buying too many engines. Maybe I'm mistaken.


https://www.csmonitor.com/1980/1008/100856.html

——

We’re getting kinda off topic, lol. But anyway to the OP, motor oil is just one factor in increasing MPGs and the results are usually so minimal you’ll really not see a difference



That article is from 1980, does it stand the test of time?


'16 Tiguan TSI Ravenol VST 5W40
'15 VW Golf TDI Ravenol VMP 5W30
'15 VW Golf Sportwagen TDI VMP 5W30
'14 Dodge Grand Caravan 3.6 Red Line Blue Label 5W20
'64 Plymouth Fury440 Red Line Blue Label 10W40
Re: Best Gas Mileage OIl [Re: GumbyJarvis] #5186332 08/13/19 07:44 PM
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talest Offline
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Originally Posted by GumbyJarvis


Originally Posted by sloinker
Originally Posted by CR94
Originally Posted by sloinker
... Back in the day Arco tried graphite and it failed due to it clogging up passages and caused engine failure. ...
That never happened or even threatened to happen when I used it for near 100k continuously.


I developed a rod knock in a vehicle using the Arco graphite. I haven't looked but remember ARCO pulling it because of too many lawsuits resulting in them buying too many engines. Maybe I'm mistaken.


https://www.csmonitor.com/1980/1008/100856.html

——

We’re getting kinda off topic, lol. But anyway to the OP, motor oil is just one factor in increasing MPGs and the results are usually so minimal you’ll really not see a difference



Has to be some kind of huge decrease in viscosity, like from 20W-50 or 10W-40 to 5W-30 or 0W/5W-20. Then you'll see it. Otherwise, tends to be a placebo.

Ford saving something like 0.2% of an MPG may be overestimating that number is often cited as a reason 5W-20 oils are "Only to meet CAFE" well.. more convinced of other countries, and if they are, in fact,
different. Thought they also went to thinner recently but I hear of a lot of bump-ups to a 30 grade. I have to say, I am certainly re-thinking the thin oil game, after some recent possible close calls with some of my vehicles. They seem to like a 30 better. Hmmm. Now, of course, if they say 5W-30 on the cap (and they do) then one has to wonder if there is relation, or if there was even problem.. but fuel economy is more about tire inflation and how fast you drive.

Oil may be optional, be a rebel.

And they have the Energy Conserving Starburst, so.

Re: Best Gas Mileage OIl [Re: dave1251] #5186583 08/14/19 05:57 AM
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cwhard Offline OP
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Originally Posted by ARB1977
Only way to improve fuel economy is the driver.



This is the most important factor.

_________________________________________________

Too easy of an answer (though somewhat true)...

I have seen (in the last 90-days) 2 different tire brands (same size/same category) change my gas mileage 2-4 mpg.

I have also seen different oil brands change it the same. An while I know most people aren't worried about MPG (my wife included), I have always be concerned/intrigued by the possibilities. I guess I don't like leaving money on the table...

Also, I have seen changing the ATF from conventional to synthetic add 1-2mpg. All this adds to my correctly tuned 09 Mazda 3 (2.3L), getting 30-32 on the road when the EPA rates it at 27 highway. So it can make a difference (especially if we ever go back to $4-5 a gallon gas). This could all fall under the heading of annal retention. It also seems that ignorance is bliss after all.

Re: Best Gas Mileage OIl [Re: ZeeOSix] #5186585 08/14/19 06:00 AM
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If every factor except oil was held constant, then 0W-8 oil would give better gas mileage. That's the whole drive of thinner oils - ie, less shear friction.

As far as oil formulation in the sane viscosities from the major oil blenders, I highly doubt you could measure much if any difference if all other factors were held constant. The viscosity has a stronger influence on engine drag then the oil formulation.

________________________________________________________

Total oil Viscosity or heated viscosity? They are often different...

Re: Best Gas Mileage OIl [Re: cwhard] #5187456 08/14/19 11:19 PM
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ZeeOSix Offline
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Originally Posted by cwhard
If every factor except oil was held constant, then 0W-8 oil would give better gas mileage. That's the whole drive of thinner oils - ie, less shear friction.

As far as oil formulation in the sane viscosities from the major oil blenders, I highly doubt you could measure much if any difference if all other factors were held constant. The viscosity has a stronger influence on engine drag then the oil formulation.

________________________________________________________

Total oil Viscosity or heated viscosity? They are often different...


At normal hot operating temperature which is where engines run most of the time. Of course a 0W-20 is thinner than say a 10W-30 at all temperatures.

Re: Best Gas Mileage OIl [Re: cwhard] #5187468 08/14/19 11:46 PM
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SavagePatch Offline
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I'm assuming something like these:

Screenshot_20190814-214221.jpgScreenshot_20190814-214341.jpg
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