Powerstroke CP4

I order my archoil off amazon.  you would probably get it for half the price I do 🙄, but it comes as a 4 pack.  you use 1 OZ for every 10 gal so a bottal usaly does 400 gal of fuel.  so when I get down to my last bottle I reorder.  the only one that was better than archoil in the testing, I can't find in Canada yet.  the archoil is a small bottle, I keep mine behind the rear seat in my 2014 F350 crew cab when I am not hauling, orcarring the truck camper, and I put it in the front storage compartment when I am hauling the 5th wheel.  it is small  maybe 4 or 5 in wide 2 to 2.5 inch thick then 10ish in tall.