diesel fuel nozzle

Yes the nozzles will fit. The fuel fill caps are designed differently than gas. Diesel is not as volatile as gasoline therfore less likely to cause a fire due to an errant static spark. This is part of the reason why gasoline nozzles fit so snuggle inside the fill cap.

Ummh...I stopped at a truck stop to fill up my Ram CTD years ago and got the nozzle stuck in mine. The nozzle was bigger than the nozzle at a normal diesel pump. It took a few minutes to finally work it loose. Things may have changed since then???

Just beware. The tank will fill up rather quickly.

I have an auxiliary tank and it is wonderful to have those high volume nozzles.

Truck stop diesel pumps are made to fill very large tanks (18 wheeler trucks) and the pump nozzle is larger than the normal regular vehicle fuel pumps. The reason it is larger than normal is to be able to fill those large 18 wheel tanks much quicker.
I believe Dodge Ram trucks were the first to adapt the smaller trucks fuel tank fill opening to be able to use the truck stop pump nozzle. Don't know if ford or chevy have adapted over the years.

My 2008 Chevy has the larger opening and I have used the truck pumps many times.

lc0338 wrote:
Truck stop diesel pumps are made to fill very large tanks (18 wheeler trucks) and the pump nozzle is larger than the normal regular vehicle fuel pumps. The reason it is larger than normal is to be able to fill those large 18 wheel tanks much quicker.
I believe Dodge Ram trucks were the first to adapt the smaller trucks fuel tank fill opening to be able to use the truck stop pump nozzle. Don't know if ford or chevy have adapted over the years.

They must have done it after 2007. The nozzle seemed to go in ok, but it was not coming out ok...

Depends on the station. I have been to some where the large nozzle fits and some the large nozzle has a sort of mushroom tip on it that flares out. I assume this tip is a sort of safety lip so it catches the edge of the tank and doesn't fall out as easily if left unattended. This lip was way too big to fit into the filler neck of my truck.
Generally you see truck stops will have a separate diesel island for us. If I see these I automatically assume that these will fit.

First look for an RV island near the truck pumps.
Then try one of the truck pumps.
If it doesn't fit (try it BEFORE you put your card in) then pull out and pull back in at a "car" island with a diesel pump. They are usually on the end where there is plenty of room.

depends somewhat on what year your truck is and the mfg. some of the earlier, (pre 2010) diesel vehicles had the filler tube the same size as the unleaded gas filler tube so the bigger nozzle wouldn't fit. Most have changed, My 04 and 15 duramax have the large filler tube, but neighbors 7.3 ford had the smaller filler tube.

Now, be aware that in some states, the truck pumps are for vehicles that pay weight/mile and not road tax, so to use the truck island you may not be able to use these islands anyway. Oregon is one such state, and many truck stops have a RV/Motorhome island or two with the big nozzles and fast fill for motorhomes.

Wouldn't fit in my F450. Yours may fit, but if you're not very careful you'll blast fuel all over yourself. Better stay at the car pumps.