Comparing Shell Super Fuel with HP Normal Fuel for my Honda Activa

Recently I conducted some emission tests on my Honda Activa(109 cc, DOP-April, 2011) for 2 different fuel types.

1. Shell Super (Address : No.145/2, Benniganahalli, Old Madras Road, Bangalore - 560038)
2. HP Regular (Address : Op To Lrde, Drdo Township, C V Raman Nagar, Bangalore - 560093) (It's a company operated pump - so the fuel quality is supposed to be good.)

Emission tests done at Shankar & Sons Petrol pump, next To Jeevan Bima Ngr Police Station, Jeevan Bima Ngr Main Rd, Jeevan Bima Nagar, Bangalore - 560075

Results :

Date	CO	HC	CO2	O2	Fuel Type
14/3/2013	0.341	233	9.32	7.48	HP Regular
6/4/2013	0.242	150	4.4	13.6	HP Regular
26/4/2013	0.373	134	5.02	13.36	HP Regular
30/4/2013	0.278	91	6.52	10.37	Shell Super
13/5/2013	0.129	20	1.19	19	Shell Super
6/6/2013	1	524	6.87	10.21	Shell Super

Notes :

1. I am not sure about the quality and accuracy of the emission testing equipment. I am just typing out the results given to me.

2. The third and the sixth tests were done on an almost empty tank while the others were done on an almost full tank. I guess there is a correlation between an empty tank and higher emission values.

3. It might be same as comparing the apples and oranges since I am comparing a premium fuel from Shell to a regular fuel from HP. No doubts about that.

4. Before I started the tests -  I was using Shell Super. So first test on HP is after the switch. Similarly the first test on Shell Super is after the switch.

5. In general my gut feeling is that Shell Super gives better pick up than HP Regular.

6. Some people said that it's harmful to use Shell Super on Honda Activa - but I asked the Honda Customer care and they said there is no such problem. Here is the conversation :

Hi, 
I use Shell Super Petrol for my Honda Activa(109 cc). 
But recently I was asked to use the regular petrol by my service mechanic. 

I would like to know if there is any disadvantage of using Shell Super Petrol for my Activa? 

Thanks, 

Response :
Dear Mr. , 

We thank you for visiting our website & sharing your concerns. 

You can use any fuel above octane number 91 (RON). Vehicle performance is not likely to be effected by changing the brand or changing between normal to premium petrol. 

Thanking you and assuring our best attention always.

Shyam Singh
Customer Relations
Ph: +91-124-2290911-19, 2290011 Ext. 368-372
Email :- customercare@honda2wheelersindia.com