Wed

03

Jun

2015

Mindful of Saving Energy

When I refill gasoline, I usually take a photo of both odometer and trip meter.  Then I check a receipt of gas and calculate how many miles the car was able to run during this period.   By doing this, I can get to know gas mileage and fuel efficiency.

For example, last month, I refilled 13.883 gallons of gasoline which cost $44.69.   The trip meter indicated 197.2 miles.  Then I can calculate gas mileage.  It was about 14.2 MPG (miles per gallon.) 

Well....because our car is old, this gas mileage is actually bad.   But it's still  cheaper than buying a new car.   Now I get to have a custom to check air pressure of the tires when MPG was worse. 

On May 12, it was only 10MPG which was really bad because air pressure of the tire was really low.  Yes, by keeping tracks of the gas mileage, I can be mindful of the fuel efficiency.

Date

 Total Price

Miles

Gallon

Miles/ Gallons

Price of Gasoline

4/17/2015

 $ 36.27

160 miles

12.094 gal

13.229 MPG

$2.99 / Gallon

5/3/2015

 $ 37.31

241 miles

11.664 gal

20.661 MPG

$3.199/Gallon

5/12/2015

 $ 44.35

141 miles

13.77 gal

10.23 MPG

3.219 /Gallon

5/16/2015

 $ 44.69

197.2 miles

13.883 gal

14.2 MPG

3.219 / gallon


As a result, I know how much does it cost to drive on this island.  For fun?, let me share my reseach on driving cost with you.

From Koloa Jodo to Kapaa Jodo, the distance is exactly 20 miles which requires 1.4 gallons for the car Mercury Mountaineer.


From Koloa Jodo to Lihue Hongwanji ( 11.3 miles /requires 0.791 gallons)

From Koloa Jodo to Costco  (9.6 miles /requires 0.672 gallons)

From Koloa Jodo to Koloa School ( 0.6 miles /requires 0.042 gallons)

From Koloa Jodo to Poipu Beach Park ( 3.2 miles /requires 0.224 gallons)

From Koloa Jodo to Lawai International (3.8 miles /requires 0.266 gallons)

From Koloa Jodo to West Kauai Hongwanji Hanapepe Temple ( 9.6 miles /requires 0.672 gallons )

From Koloa Jodo to Kauai Soto Zen ( 10.2 miles /requires 0.714 gallons)

From Koloa Jodo to Waimea Shingon  ( 16.7 miles /requires 1.169 gallons)

From Koloa Jodo to Waimea Canyon  (26.9 miles /requires 1.883 gallons)

From Koloa Jodo to Kalalau Lookout (34.4 miles /requires 2.408 gallons)

From Koloa Jodo to Ke'e Beach ( 48.7 miles /requires 3.409 gallons)

 

As of May 16,2015, cost of gasoline at Costco on Kauai was $3.219.   For another fun, I calculated cost of driving 96 Mercury Mountaineer as follows:

From Koloa Jodo to Kapaa Jodo ($4.5 / One way)

From Koloa Jodo to Lihue Hongwanji ( $2.31 / One way)

From Koloa Jodo to Costco ( $2.16 / One way)

From Koloa Jodo to Koloa School ( $0.13 / One Way)

From Koloa Jodo to Poipu Beach Park ( $0.72 / One Way)

From Koloa Jodo to Lawai International Center ( $0.85 / One Way)

From Koloa Jodo to WKH Hanapepe Temple ( $2.16 / One Way)

From Koloa Jodo to Kauai Soto Zen Temple ( $2.29 / One Way)

From Koloa Jodo to Waimea Shingon Mission ( $3.76 / One Way)

From Koloa Jodo to Waimea Canyon Lookout ( $6.06 / One Way)

From Koloa Jodo to Kalalau Lookout ( $7.75 / One Way)

From Koloa Jodo to Ke'e Beach ( $10.9 / One Way)


For more fun?, I calculated  cost of driving 2015 Toyota Prius (50MPG) and compared as follows.


From / To

Distance

Toyota Prius/ 50 MPG

 96 Mercury/14.2 MPG

Koloa Jodo / Kapaa Jodo

20 miles

$0.92 /0.4 gallons

 $4.5 / 1.4 gallons

Koloa Jodo /Lihue Hongwanji

11.3 miles

$0.52 /0.226 gallons

 $2.31 / 0.791 gallons

Koloa Jodo /Costco

9.6 miles

$0.61 /0.192 gallons

 $2.16/gallons

Koloa Jodo /Koloa School

0.6 miles

$0.03 /0.012 gallons

 $ 0.13 /042 gallons

Koloa Jodo /Poipu Beach Park

3.2 miles

$0.20 / 0.064 gallons

 $0.72 / 0.224 gallons

Koloa Jodo/Lawai International

3.8 miles

$0.24 /0.076 gallons

 $0.85 / 0.266 gallons

Koloa Jodo /WKH Hanapepe

9.6 miles

$0.61 /0.192 gallons

 $2.16 / 0.672 gallons

Koloa Jodo /Kauai Soto Zen

10.2 miles

$0.65 /0.204 gallons

 $2.29 / 0.714 gallons

Koloa Jodo /Waimea Shingon

16.7 miles

$1.07 / 0.334 gallons

 $3.76 /1.169 gallons

Koloa Jodo/Waimea Canyon

26.9 miles

$1.73 / 0.538 gallons

 $6.06 / 1.883 gallons

Koloa Jodo/Kalalau Lookout

34.4 miles

$2.21 /0.688 gallons

 $7.75 / 2.408 gallons

Koloa Jodo / Ke'e Beach

48.7 miles

$3.13 /0.974 gallons

 $10.9 /3.409 gallons


For me, I was very shocked to know it cost about 26 cents for one round trip from Koloa Jodo Mission to Koloa School by driving 96 Mercury Mountaineer.   I was saving pennies for various projects but realized walking to school was a much better way to save money!

Interstingly I recalled what my brother advised me last year for diet. Just keeping a record of your weight everyday would be the first step to lose weight.  He continued to say,it should be good for marketing, too.

So in order to save energy, first of all we need to know how much energy we are using for everyday.  Without knowing this, our efforts might be in vain.

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