BEST Unleaded Fuel: Shell, Petron or Caltex

[dr. d]

Suki na sa Blaze dahil zero ethanol.
Nate-tempt minsan mag XCS.
Pero worth it na din price diff ng cleaner fuel.
50ppm (Euro4) vs. 5ppm (Euro6) Sulphur content.

when 10% blend because law,
my km/li went down.
i couldn't understand it, at first...

[MBE]

placebo...

Paano naging placebo eh yan talaga ang resulta. Naka hybrid ako kaya matipid.

Eto yung Petron umabot na nga ng 25kmpl.


Eto pinakamataas sa ibang brand, mas recent yan, kaya babalik na ko sa petron to test


Malaki ang difference 25 kmpl vs 15 kmpl. Kaya nga ako nag consulta dito.

[bxr monkey]

when 10% blend because law,
my km/li went down.
i couldn't understand it, at first...

Kaya iyong more energy content ng 100% gasoline, medyo na offset din ang cost.

[bxr monkey]

Paano naging placebo eh yan talaga ang resulta. Naka hybrid ako kaya matipid.

Eto yung Petron umabot na nga ng 25kmpl.


Eto pinakamataas sa ibang brand, mas recent yan, kaya babalik na ko sa petron to test


Malaki ang difference 25 kmpl vs 15 kmpl. Kaya nga ako nag consulta dito.

Possible kaya may contamination sa fuel handling sa ibang gas station? Pero malaki difference. Malamang baka may nagbago sa conditions.

[hardwang]

Paano naging placebo eh yan talaga ang resulta. Naka hybrid ako kaya matipid.

Eto yung Petron umabot na nga ng 25kmpl.


Eto pinakamataas sa ibang brand, mas recent yan, kaya babalik na ko sa petron to test


Malaki ang difference 25 kmpl vs 15 kmpl. Kaya nga ako nag consulta dito.

mmm... not sure if its a good idea to consult the component of petron fuels here as you will get mostly anecdotal statements.

[oj88]

Malaki ang difference 25 kmpl vs 15 kmpl. Kaya nga ako nag consulta dito.

That's a fluke, IMO. Anyway, your sample size is too small. If you want something that is closer to actual, do 3 full tanks for each fuel then note down the measured km/l or L/100Km before you reset it again prior to the next fill-up.

Compute the average fuel economy readings for each 3 samples for each fuel.

Traffic patterns and other factors vary so much from day to day so you can't get an apples-to-apples comparison. But by increasing your sample count, you are gradually reducing the effects of external factors in your measurements.

[17Sphynx17]

Paano naging placebo eh yan talaga ang resulta. Naka hybrid ako kaya matipid.

Eto yung Petron umabot na nga ng 25kmpl.


Eto pinakamataas sa ibang brand, mas recent yan, kaya babalik na ko sa petron to test


Malaki ang difference 25 kmpl vs 15 kmpl. Kaya nga ako nag consulta dito.

Here are questions and hopefully your dash has data logs you can reset everytime you perform the full tank method to check

1) get total distance travelled with the full tank method. Make sure to reset your trip meter every full tank (you can switch between A and B) so that you can alternate between them for the "next full tank"
2) Is there a read out for average speed? also reset this every full tank to make sure it is only logging the complete total usage of the car with the specific full tank
3) total time in use (this includes any and all idling). Not all cars have this but Toyota "should" have it as a 2009 Altis has it in the dash on the left side under the odometer.

giving a digital readout of 25kmpl, 15kmpl etc doesn't really mean much if you don't have the whole picture. Did you reset? check tire pressure every time? Was there changing to loads (# of Pax or cargo etc). With the 25kmpl was that with mixed and highway driving while 15kmpl was city driving only etc etc. Without #1 to #3, the variables are endless.

So, as the owner who is trying to check, you can log/record these data yourself and see what it "reveals". The difference can immediately be explained by a stark difference in driving conditions. But, that's the easiest guess to make.

EDIT 1: I zoomed in on your pictures.. You are doing it incorrectly. You are only showing "Last Average" FC. Not total FC Average for the full tank. That is highly dependent on specific driving condition of a single journey between on and off, not between "full tanks". It has no bearing on the actual average FC of your car. Hope that helps.

You could have started the journey with more "charge" when you got the 25kmpl while you had little to no charge left when you started your journey when you got the 15kmpl. That's why you are "doing it wrong" if you want to properly check your average FC for the fuel.

[dr. d]

That's a fluke, IMO. Anyway, your sample size is too small. If you want something that is closer to actual, do 3 full tanks for each fuel then note down the measured km/l or L/100Km before you reset it again prior to the next fill-up.

Compute the average fuel economy readings for each 3 samples for each fuel.

Traffic patterns and other factors vary so much from day to day so you can't get an apples-to-apples comparison. But by increasing your sample count, you are gradually reducing the effects of external factors in your measurements.

i agree.
also, think and inspect your car. you might be missing out on something.
the last time i had something that drastic a drop, i found out i had a leak in my tubing!