Got this email yesterday. I am pretty sure it is targeted so check your promotions tab in your email if you have received a similar message. I have my reward currency set as a fuel discount currently.
It does say 20 points every time you spend $40 or more so probably can stack them.
Simply scan your Flybuys and you’ll receive 20 bonus Flybuys every time you spend $40 or more on fuel at your local Z or participating Caltex site. Hurry in, this special offer ends Thursday 10 November 2022.* Your bonus Flybuys will be loaded within 10 business days of this date.
Terms and Conditions:
*Get 20 bonus Flybuys when you fill up at least $40 (after the application of any Pumped, Fuel Up or Z & Caltex Fuel Discount) on petrol or diesel (“Fuel”) in a single transaction at any participating Caltex station/any Z service station nationwide from Tuesday 1 November – Thursday 10 November 2022 (“Promotion Period”) and scan your Flybuys (“Flybuys Offer”). Flybuys Offer only available to recipients of this communication. Flybuys 20 Bonus Offer cannot be combined with any other bonus Flybuys fuel promotion or offer and is not available with Z Sharetank or Z Business. Bonus Flybuys will not appear on your receipt and will be loaded to your account within 10 business days of the last day of the promotion period. Flybuys Membership Terms and Conditions apply.
my bonus was only 5 hahahahahaha (profanity)