I just want to correct and clarify a few things in this thread.
The Visa/Amex/MC variable load (think $20-$500 you choose what you are loading) cards have always and should continue to earn 1x fuel points regardless of the 4x promotion.
The $25, $50, $100 Visa/Amex/MC cards will get the 4x points during the promotion. Even the $5.95 load fee gets 4x points.
I have quite a bit of knowledge on this game, so feel free to ask any questions.
So, I buy a $500 Visa GC and pay $506 at the counter, I get 2024 points?
Last time when they did this someone specifically mentioned that it doesnt work with Visa/MC gift cards...