Except that these vehicles don't usually pull into the nearest station for a fill-up; they use government fuel points.
So if the Israeli station is correct, then the engine may be the 8.1L Vortec V-8
It might be different overseas, but in the US they (at least used to) pull into a regular gas station to fill up.
A number of years ago, during the Clinton presidency, I went out to lunch one day. I ran by the local Burger King which was right across the street (Mockingbird) from the main entrance to Dallas Love Field, then to the gas station across the street (Cedar Springs) for some gas before heading back to work.
I was the only one in the station and had just started filling up when four Dallas squad cars pulled up and blocked all but one entrance to the Mobil station. Right afterwards, three dull grey and dull blue Mercury Grand Marquis (with suspiciously beefy looking tires/suspensions) pulled in along with two or three black Suburbans. Then a strange looking Cadillac with running boards and grab handles all over the place pulled in, and then the Presidential Cadillac limo. The Cadillacs and the Suburbans had DC plates on them. The Mercurys took positions around the station, but not at the pumps which were left clear for the Suburbans, the follow up car, and the limo. It was like an invasion.
And no, Clinton wasn't in the limo. He didn't arrive in Dallas until a couple of hours later.
I just set my pump at the lowest flow rate and watched the show around me (and I was being watched as well!). I was able to walk over and look at the limo but kept at least three feet away from it in doing so. I was being watched closely, but no one said anything.
I looked for about 5 minutes then went back to my truck, finished up, and got in to leave. I had to motion to one of the Dallas squad cars to let me out and after getting signals from the SS there, he moved enough to let me out of the station and I went back to work with a cold burger and a good story.
I don't know if they still do it this way or not, but it made for an interesting lunch hour.