Mydearfriend

I am a new member (2 months).  I only use Caltex because my sales told me to.  I also got the coupons which offers $30 free gas for every $400 purchase.  I usually go to the Fotan Caltex station, however, I do not understand:

1) when my gas light is on, which means my tank is close to empty, I filled a full tank for around $780 (in mid DEC 2010).  One week later, my gas indicator indicates I only used 3 bars (levels) from full tank, which means my tank is around 80% full.  I went to Caltex Fotan and asked them to fill full tank, the bill was $320.  The reason why I fill it up so frequently at that time is I want to get the Map King for $50.

2) Sometimes, I got the feeling that if I fill $400 gas and use the $30 coupon, they just give $400 gas and they did not fill the extra $30 gas if I do not watch them.  But I have to emphaze that it's only my feeling, I do not have any evidence, but it's worth while to be cautious about it.

In addition, I found that Platimun is much better than gold even though it is $1 more expansive, because it's more powerful and it runs longer distinance.

The above is only my navie observations, thanks for  all C-high's valuable opinions.