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Switch from 0W20 to 5W30 gas mpg change #4758235
05/15/18 07:43 PM
05/15/18 07:43 PM
Joined: Feb 2014
Posts: 139
ga
faltic Offline OP
faltic  Offline OP
Joined: Feb 2014
Posts: 139
ga
While the Highlander was still on the FF I took it on a road trip round trip about 540 approx round trip got 26.(don't remember) mpg going 25.(don't remember) mpg coming back on flat Florida roads. I replaced the FF with with QSUD 0W20 at 5k miles, no mileage checks during that OCI. Drained the QSUD 0W20 at 10k miles refilled with QSUD 5W30 and went on a road trip. It was 600 approx miles round trip about half thru the Appalachian foot hills. Kind of thought the mileage might drop because of the switch to 5W30 or the climbing hills with CC engaged (saw a few trips to 5k rpm). Only check one fill up which covered the whole trip up and part way back but got 27.48 mpg. I can live with that.


--------------------------------
17 Highlander 3.5 2wd AT 20k+
95 Tacoma 2.4 2wd AT 187k+
07 EX250 21k+
09 EN500 11k+
11 PCX 125 5K+
Re: Switch from 0W20 to 5W30 gas mpg change [Re: faltic] #4758246
05/15/18 07:49 PM
05/15/18 07:49 PM
Joined: Mar 2017
Posts: 6,957
...
PimTac Offline
PimTac  Offline
Joined: Mar 2017
Posts: 6,957
...
It’s still breaking in. Your fuel economy will improve during this time. I doubt the oil had anything to do with it.


Cannot see signatures any longer so it doesn’t matter.
Re: Switch from 0W20 to 5W30 gas mpg change [Re: PimTac] #4758247
05/15/18 07:50 PM
05/15/18 07:50 PM
Joined: Nov 2017
Posts: 312
HondaBroMike Offline
HondaBroMike  Offline
Joined: Nov 2017
Posts: 312
Originally Posted By: PimTac
It’s still breaking in. Your fuel economy will improve during this time. I doubt the oil had anything to do with it.


And neither does your Valvoline 0w-20.



Re: Switch from 0W20 to 5W30 gas mpg change [Re: faltic] #4758321
05/15/18 10:06 PM
05/15/18 10:06 PM
Joined: Dec 2008
Posts: 2,407
CA
raytseng Offline
raytseng  Offline
Joined: Dec 2008
Posts: 2,407
CA
one of the biggest factors is still speed or technically wind resistance.
while it may seem the hill climb is going to kill your mpg, if the twists and turns or traffic end up causing you to go 55 or even slower, it may end up equal or better on fuel economy than the 75 or 80mph on the flats.

Last edited by raytseng; 05/15/18 10:08 PM.
Re: Switch from 0W20 to 5W30 gas mpg change [Re: faltic] #4758325
05/15/18 10:16 PM
05/15/18 10:16 PM
Joined: Oct 2004
Posts: 5,895
New Braunfels
Bryanccfshr Offline
Bryanccfshr  Offline
Joined: Oct 2004
Posts: 5,895
New Braunfels
The difference between 0w20and 5w30 is insignificant. Keep going. Nice engine in the Highlander. is it like the Australian Kluger with the 2gr fks or is it the 2gr fe?

Last edited by Bryanccfshr; 05/15/18 10:17 PM.

2018 Trd Pro 4Runner
2018 Tacoma off-road

Dealer 0w20 to M1 0w40 FS -it depends
Re: Switch from 0W20 to 5W30 gas mpg change [Re: raytseng] #4758328
05/15/18 10:22 PM
05/15/18 10:22 PM
Joined: Oct 2004
Posts: 5,895
New Braunfels
Bryanccfshr Offline
Bryanccfshr  Offline
Joined: Oct 2004
Posts: 5,895
New Braunfels
Originally Posted By: raytseng
one of the biggest factors is still speed or technically wind resistance.
while it may seem the hill climb is going to kill your mpg, if the twists and turns or traffic end up causing you to go 55 or even slower, it may end up equal or better on fuel economy than the 75 or 80mph on the flats.


Yes I can get 25-26 mpg @55 in my taco without a bad headwind. It drops to about 18.5 as I cross 75 mph. Very wind sensitive.


2018 Trd Pro 4Runner
2018 Tacoma off-road

Dealer 0w20 to M1 0w40 FS -it depends
Re: Switch from 0W20 to 5W30 gas mpg change [Re: Bryanccfshr] #4758369
05/16/18 01:26 AM
05/16/18 01:26 AM
Joined: Feb 2014
Posts: 139
ga
faltic Offline OP
faltic  Offline OP
Joined: Feb 2014
Posts: 139
ga
I believe it's the 2GR FKS

Originally Posted By: Bryanccfshr
The difference between 0w20and 5w30 is insignificant. Keep going. Nice engine in the Highlander. is it like the Australian Kluger with the 2gr fks or is it the 2gr fe?


--------------------------------
17 Highlander 3.5 2wd AT 20k+
95 Tacoma 2.4 2wd AT 187k+
07 EX250 21k+
09 EN500 11k+
11 PCX 125 5K+
Re: Switch from 0W20 to 5W30 gas mpg change [Re: Bryanccfshr] #4758405
05/16/18 04:25 AM
05/16/18 04:25 AM
Joined: Jul 2012
Posts: 2,627
South Carolina
alarmguy Offline
alarmguy  Offline
Joined: Jul 2012
Posts: 2,627
South Carolina
Originally Posted By: Bryanccfshr
The difference between 0w20and 5w30 is insignificant. Keep going. Nice engine in the Highlander. is it like the Australian Kluger with the 2gr fks or is it the 2gr fe?


Very true, the OP would not be able to measure any difference in MPG between the two.


14 Road King (current)
08 VStar 1300 Tourer
07 Suzuki C50
Re: Switch from 0W20 to 5W30 gas mpg change [Re: faltic] #4758591
05/16/18 08:32 AM
05/16/18 08:32 AM
Joined: Aug 2003
Posts: 2,571
DELAWARE
Hootbro Offline
Hootbro  Offline
Joined: Aug 2003
Posts: 2,571
DELAWARE
When collecting data, repeat-ability of conditions is paramount. No engineer would collect data or draw conclusions from what you have done.


2019 Toyota Tacoma 3.5L (Factory Fill 0W-20)
2017 Jeep Renegade 2.4L (Idemitsu 0W-20)


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