‘24 civic 2.0 NA motor 0w20 oil - Went from M1 AFE to EP…. Mpg went down?

[NattyBoh]

So I went from M1 Advance Fuel Economy oil to Extended Performance in the same weight and I cannot hit the same MPG I was getting under the AFE oil. I literally drive this car to work and back, same route etc. I was religiously getting 39.5 going to work and 41 coming home. I’m guessing because of the hills…

Anyway, is this because the EP oil is ‘ thicker ‘ or something? Very odd for sure, but one of your guys maybe be able to explain it.

I get that the oil touts better MPG , but this might be an actual instance where you DO gain some MPG. The AFE oil seemed thin, does that mean less wear protection? I plan on following the OLM as stated in the manual. That’s debate aside, that’s why I went to the EP variant versus the AFE flavor.

Thanks!

 

[SubieRubyRoo]

It’s noise. Nothing else. Wind direction, temperature, how many donut holes you ate for breakfast…. If both are 20 grade you’ll never see maybe more than 0.1 or so long term between them.

My ‘06 Odyssey called for a 5w20 and I used Pennzoil Euro 0w40 and only saw about a 0.3-0.4mpg difference.

 

[Fa24wrx]

There are too many variables

 

[Fa24wrx]

It’s noise. Nothing else. Wind direction, temperature, how many donut holes you ate for breakfast…. If both are 20 grade you’ll never see maybe more than 0.1 or so long term between them.

My ‘06 Odyssey called for a 5w20 and I used Pennzoil Euro 0w40 and only saw about a 0.3-0.4mpg difference.

So you're saying I should put 0/5w40 in my FA24DIT

JK But it has been in the 90s F today

 

[SubieRubyRoo]

So you're saying I should put 0/5w40 in my FA24DIT

JK But it has been in the 90s F today

Sure, no worries

I have SuperCar 0w30 on deck for my FA24DIT

 

[NattyBoh]

I was about to solidly hold 39.5 and 41 for 7k miles until this oil change. I did get a dip in the winter but it’s slowly picking back up to the higher older MPG I was getting but not there yet

 

[Fa24wrx]

Sure, no worries

I have SuperCar 0w30 on deck for my FA24DIT

What's currently in?

 

[kschachn]

It’s noise. Nothing else. Wind direction, temperature, how many donut holes you ate for breakfast…. If both are 20 grade you’ll never see maybe more than 0.1 or so long term between them.

My ‘06 Odyssey called for a 5w20 and I used Pennzoil Euro 0w40 and only saw about a 0.3-0.4mpg difference.

Deep in the noise.

 

[SubieRubyRoo]

What's currently in?

Premium Plus 0w30, which would be a good choice for OP if he was interested in seriously extending his OCIs with some UOAs for guidance

 

[NattyBoh]

Deep in the noise.

lol there is a reason I posted this here. It boggles me to no end. I’ve been around for a while and read a lot on here. I can’t explain it myself. The car is new at 8000mi so it’s just weird imo

 

[kschachn]

lol there is a reason I posted this here. It boggles me to no end. I’ve been around for a while and read a lot on here. I can’t explain it myself. The car is new at 8000mi so it’s just weird imo

These are all good reasons in the post below. Plus the fact that the energy density of gasoline varies all the time even at the same gas station. I once posted an article here that showed that it varied up to 4% irrespective of summer or winter blends. That right there bumps a lot out into the nether regions.

Best Brand of Gasoline

Get all my Premium at Sam's Club. Other places around here are 40-50 cents more expensive than Sam's Club premium, making it well worth driving a couple extra miles to fill it up. Get my 87 wherever it's convenient.

bobistheoilguy.com

 

[NattyBoh]

Been using shell regular since day one. Same station.

 

[kschachn]

Been using shell regular since day one. Same station.

Yes. Read above. The article I mentioned was attempting to determine real-world gasoline mileage, and they found that this task was extremely difficult to do. It was impossible without using standardized test fuel that had a consistent BTU.

 

[NattyBoh]

Yes. Read above. The article I mentioned was attempting to determine real-world gasoline mileage, and they found that this task was extremely difficult to do. it was impossible without using standardized test fuel that had a consistent BTU.

Understood, will read the link when I get home. Thanks!

 

[4WD]

I don’t check MPG - I just hear WNG

 

[Patman]

I have run at least 4 different oils in my 2.0 Civic and have never noticed any difference in fuel efficiency between them. My current average over the past 6000 miles is 47.1 MPG. I use eco mode and I drive it with maximum fuel efficiency in mind. It helps a lot that mine is the lightest version possible (LX coupe)

 

[TumblrDucks]

Maybe switch to AFE in next oil change and see if mileage recovers? If what you have observed is repeatable, then EP is very likely to be the culprit.

 

[ThirdeYe]

There really shouldn't be a noticeable difference in mpg between 20 grade oils. Maybe a few tenths of a mpg at best under a controlled test from one end of the viscosity grade to the other, if that. I'm guessing there's some other factor.

 

[NattyBoh]

I have run at least 4 different oils in my 2.0 Civic and have never noticed any difference in fuel efficiency between them. My current average over the past 6000 miles is 47.1 MPG. I use eco mode and I drive it with maximum fuel efficiency in mind. It helps a lot that mine is the lightest version possible (LX coupe)

Great fuel mileage. I have the sport so that’s a tin can as well lol!

Maybe switch to AFE in next oil change and see if mileage recovers? If what you have observed is repeatable, then EP is very likely to be the culprit.

Yeah it has to be fuel related…

There really shouldn't be a noticeable difference in mpg between 20 grade oils. Maybe a few tenths of a mpg at best under a controlled test from one end of the viscosity grade to the other, if that. I'm guessing there's some other factor.

I know that’s why I came here to post… doesn’t make sense.

 

[chris719]

Sure, no worries

I have SuperCar 0w30 on deck for my FA24DIT

I’m now running M1 ESP X3 0W-40 in my Mazda 2.5 MZR .