It will expire if the card is not used on a qualifying purchase within a year.



http://www.esso-mobil-smiles.com.my/en-my/...smiles_faq.aspx

My own rule of thumb when calculating FC after a brand switch is to ignore the FC and "power" feel for the first two full tank sessions as it is the transition period where you need to purge/dilute the tank from previous brand's additive mix.

And calculation needs to be on a full tank basis (i.e. volume pumped to reach full tank after driving xxx kilometers) rather than distance covered on a partial refuel.

That is basically how I compile my FC trend.

It is not necessary to empty out the tank. I always top up my tank when the gauge meter shows 1/4 tank remaining. That means I need to top up around 31 or 32 liters (tank capacity is 42 liters). What I need is to sufficiently dilute the previous brand enough before taking records (and I usually take a 5 readings average instead of just 1 reading so that there will be further dilution as well as averaging out any variables that happens during my drive).

Really? I find Esso gives more power than BHP. Not sure where Shell ranks yet in terms of power and FC until I start taking measurements.

Each to his own and maybe depending on the car. For me, Esso gives good acceleration compared to BHP when climbing uphill on a small slope outside the area where I live (go through there every morning on my way to work). Interested in testing out Primax but have to finish my current Esso run first (expected to end around June/July'11) before switching.

This post has been edited by Dias: Apr 17 2011, 12:04 PM

Seems that you have not been reading my sentences correctly.
This post has been edited by Dias: Apr 17 2011, 12:45 PM

Dude...there's a difference betweeen



versus



Has the interpretation "I will be refilling using Esso brand for the next two months" ever occurred to you?

This post has been edited by Dias: Apr 17 2011, 01:07 PM

A brand run is clear enough as it implies that I will be sticking with a particular brand until a specified deadline. Failing to grasp the nuance of the sentence lies at fault with the reader.

PS: Similarly in the manufacturing industry (where applicable), being able to differentiate between a "product run" and a "product batch run" has two different meanings for a production demand planner. Get my drift?

This post has been edited by Dias: Apr 17 2011, 04:08 PM