Sh*tty Mileage Since Last Service - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

FRSBRZGT86FAN · 09-29-2015, 01:29 AM

Quote:

Originally Posted by caliprep

I drive around without the spare tire....does that count

I do as well, I'm gonna ditch the tools and the rear seats eventually

JEDI · 10-01-2015, 07:00 PM

Quote:

Originally Posted by FRSBRZGT86FAN

I do as well, I'm gonna ditch the tools and the rear seats eventually

There is a Seibon Carbon fiber back seat delete for around $1800.

ravisraval · 10-01-2015, 08:21 PM

Different weight oil?

FRSBRZGT86FAN · 10-01-2015, 09:21 PM

Quote:

Originally Posted by JEDI

There is a Seibon Carbon fiber back seat delete for around $1800.

There's one for $300 from shrader performance, they claim a 23 lb loss of weight but you only lose about 10-15lbs doing it though because you have to remove the seats as well as the seat belts and seat belt clips etc on your own.

mortybryant · 10-16-2015, 05:10 PM

Quick update on this.

Fuel mileage is averaging around 22mpg. Prior to my last service I was averaging 27-29mpg on 93 octane fuel. I increased tire pressure before my last fill-up because my "Low Tire Pressure" light came on. All four corners were sitting at 32psi, so I increased to 40psi. No change.

I checked both of my receipts from first and second service. The only thing different was that my first service used bottled oil, my last service used bulk oil. I've done some research, and I don't see where this would make that much difference. Thoughts???

strat61caster · 10-16-2015, 05:45 PM

Quote:

Originally Posted by mortybryant

I checked both of my receipts from first and second service. The only thing different was that my first service used bottled oil, my last service used bulk oil. I've done some research, and I don't see where this would make that much difference. Thoughts???

Oil level? Oil weight? An overfill can cause resistance inside the motor and a thicker oil will slow everything down decreasing fuel economy.

Problem is you can't really determine oil viscosity, tech could have grabbed the wrong gun and you wouldn't know. It shouldn't account for a ~20% drop in fuel economy, maybe 10% at the most.

mortybryant · 10-16-2015, 05:48 PM

Receipt said 0w20. What's the spec for oil level? Manual said 5.7 quarts, but I've read some places that is too much.

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Impureclient · 10-16-2015, 06:50 PM

The extra gas cost is about $20 every 1000 miles you are going from the 28 to 22 mpg. If you wait the 7K oil change interval, that is $140 extra in gas spent.
I would drain the oil and either watch them put the correct weight oil in or do it yourself.

KalbiCool88 · 10-16-2015, 07:00 PM

I've been losing my mpg at the exact same time I got with my girlfriend - granted I've been progressively getting fat all at the same time. Coincidence?

Impureclient · 10-16-2015, 07:15 PM

Quote:

Originally Posted by KalbiCool88

I've been losing my mpg at the exact same time I got with my girlfriend - granted I've been progressively getting fat all at the same time. Coincidence?

Ask girlfriend to go on diet?
girlfriend ->

<- you

KalbiCool88 · 10-16-2015, 07:19 PM

Quote:

Originally Posted by Impureclient

Ask girlfriend to go on diet?
girlfriend ->

<- you

Or vice versa. But that sounds about right lol.

mortybryant · 10-16-2015, 09:36 PM

Quote:

Originally Posted by Impureclient

The extra gas cost is about $20 every 1000 miles you are going from the 28 to 22 mpg. If you wait the 7K oil change interval, that is $140 extra in gas spent.
I would drain the oil and either watch them put the correct weight oil in or do it yourself.

I'm probably going to change the oil this weekend myself. It's frustrating when I go out for some spirited driving and I can easily notice the fuel level going down. We'll see what happens.

Sent from my iPhone using Tapatalk

radroach · 10-16-2015, 11:17 PM

I had my battery disconnected about a month ago. Before my averages were about 28, now it's 26.

Also winter fuel blends typically get worse mpg's compared to summer blends. They probably started phasing in the winter blends this month.

billwot · 10-17-2015, 08:52 PM

Quote:

Originally Posted by Packofcrows

DC the battery for like 2min. Then turn car on, idle for like 5min, then go drive for like 20-40 hwy miles at 60mph and youll see that itll be almost 40 (36+) mpg.

Then drive it like that for a few weeks, then drive it however you want. It'll eventually get lower with your avg though.

You don't have to disconnect the battery to reset the avg mpg calculation/display.

With Avg MPG displayed, just hold the Display button down for a few seconds. The display will zero and start over, calculating and displaying MPG from the new point.

I reset mine at each fill up.

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10-01-2015, 08:21 PM	#17
ravisraval Senior Member Join Date: Oct 2014 Drives: 2013 FRS Location: Bay Area, CA Posts: 104 Thanks: 115 Thanked 24 Times in 18 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Different weight oil?

10-16-2015, 05:10 PM	#19
mortybryant Member Join Date: Dec 2014 Drives: Scion FR-S RS 1.0 Location: Tell City, Indiana Posts: 77 Thanks: 1 Thanked 27 Times in 14 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Quick update on this. Fuel mileage is averaging around 22mpg. Prior to my last service I was averaging 27-29mpg on 93 octane fuel. I increased tire pressure before my last fill-up because my "Low Tire Pressure" light came on. All four corners were sitting at 32psi, so I increased to 40psi. No change. I checked both of my receipts from first and second service. The only thing different was that my first service used bottled oil, my last service used bulk oil. I've done some research, and I don't see where this would make that much difference. Thoughts???

10-16-2015, 05:48 PM	#21
mortybryant Member Join Date: Dec 2014 Drives: Scion FR-S RS 1.0 Location: Tell City, Indiana Posts: 77 Thanks: 1 Thanked 27 Times in 14 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Receipt said 0w20. What's the spec for oil level? Manual said 5.7 quarts, but I've read some places that is too much. Sent from my iPhone using Tapatalk

10-16-2015, 06:50 PM	#22
Impureclient Banned Join Date: May 2015 Drives: 2015 FR-S Location: NPR, Florida Posts: 2,404 Thanks: 1,802 Thanked 2,903 Times in 1,282 Posts Mentioned: 25 Post(s) Tagged: 2 Thread(s)	The extra gas cost is about $20 every 1000 miles you are going from the 28 to 22 mpg. If you wait the 7K oil change interval, that is $140 extra in gas spent. I would drain the oil and either watch them put the correct weight oil in or do it yourself.

10-16-2015, 07:00 PM	#23
KalbiCool88 Senior Member Join Date: Feb 2015 Drives: 2005 SLK350, 2015 RS 1.0 FRS Location: SF, USA Posts: 452 Thanks: 459 Thanked 181 Times in 120 Posts Mentioned: 0 Post(s) Tagged: 1 Thread(s)	I've been losing my mpg at the exact same time I got with my girlfriend - granted I've been progressively getting fat all at the same time. Coincidence?

10-16-2015, 11:17 PM	#27
radroach Senior Member Join Date: Feb 2013 Drives: car Location: usa Posts: 2,162 Thanks: 1,028 Thanked 867 Times in 530 Posts Mentioned: 35 Post(s) Tagged: 1 Thread(s)	I had my battery disconnected about a month ago. Before my averages were about 28, now it's 26. Also winter fuel blends typically get worse mpg's compared to summer blends. They probably started phasing in the winter blends this month.

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