I don't know what kind of coach you have but here is what we experienced with our 04 Vectra. You have the option to fuel from both sides, which is a great idea. However, right after we bought our coach, we discovered that on the passenger side fuel port there was a breather pipe that was about 1/2 too long in the filler port. The drivers side was fine and accepted the truck nozzels okay. The dealer ordered and replaced the passenger side and now we can fuel at a truck stop from either side. I have never had a problem with the rate of flow, as long as you keep an eye on it as it fills so it doesn't foam. Noticed I said "I" since I am the one who does this job ! We stopped and got fuel at one station (regular gas station with diesel) and the pumps were so-o-o slow, we were able to buy and have lunch before it finished ! So I would rather have the truck stop speed pumps.