@ Accord7362
Thanks brother for you input
Probably plugs played a decent part for the good mileage of 501 km in whole tank, although it more depends on driver
& you seem to be a patient person on road, a very good thing indeed.
I am not much literate about spark plugs so was roaming around to educate myself and doing comparison. The only difference between NGK izfr6k11 (Heat Range 6) and Denso ik20 (Heat Range 20) is heat range. I was wondering what's best for our environment.
NGK has also izfr6k-11S S stands for steel gasket, normal izfr6k-11 are nickel gasket, wondering again does this make any difference.
NGK-izfr6k-11
NGK-izfr6k-11S
@JZ
Please pm prices for ik20 & izfr6k-11. Thanks.