Using maybank CC for petrol, I think maybank give the best CB for petrol.

Maybank Petronas Ikhwan Visa, with 8% CB for petronas station on weekends ONLY and 1% CB for petronas station on weekdays.
Spend RM625 get CB RM50

Maybank 2 card platinum/gold, AMEX ones with 5% CB for all purchases (except gov bodies) on weekends ONLY.
Spend RM1,000 get CB RM50

Maybank VISA signature, 5% CB for petrol & grocery for all days
Spend RM1,760 get CB RM88