It's probably true, as you say, that the U.S. doesn't get anything anywhere near the great boon that the English get from Arab oil. So you're being logical in saying that the U.S., should abandon its good ally because it could benefit from better oil-relations the way the U.K. does. However, the U.S. isn't ready to bend over yet for the Arabs the way Britain has and sell its allies down the river for oil and from fear of domestic tantrums. "The US gets a bit of hi-tech from Israel, but it pays ffor it, and it could no doubt get it elsewhere if it had to. It probably gets a bit of intelligence, but I bet it only gets the intelligence Israel wants it to get, showing the things Israel wants it to see." The other side of the coin is that Israel is a constant source of conflict between US and the Muslim world, not the only source of conflict, but definitely one of the biggest.
Car bomb in Syria's Latakia kills at least seven (Reuters)
from the article: Secret Israeli report: U.S. cozying up to Palestinians