Different legal rules hauling gasoline vs diesel. Different colored cans & type of vents etc. Most metal tanks added to the back of a truck are diesel only. Here in SOCAL there are desert areas of BLM and NFS land. Go there to ride quads , jeeps and bikes. In a group of about 50 people law enforcement comes there and checks all registration , writing tickets, Then typically NFS motorized recreation officer on Federal land comes there and checks the fuel containers ... min $150 ticket for each container not compling with new regulations. Mostly gasoline in diesel or non flammable containers. Older containers do not have a grandfather clause because when manufactured they complied with fuel containment regulations. And after the ticket they take the fuel and pour out in a trailered fuel tank. Same holds true for leased federal land where a occupied property is built on. Was with a club on HWY 2 in Los Angeles forest. 40 leased acres 2 hours from downtown Los Angeles at 6500 feet. Pic of cabin is my icon. had to have special flammable lockers for anything flammable. Over 100 person membership it was crazy getting flammable items even cooking oil and any aerosol in a federal approved flammable locker. We eventually removed the cabinet covers in the kitchen then all lockers so was easy to check for flammable liquids. Ended up with one person responsible each day who would spend time with law enforcement and "pay" for the ticket if the club did not comply. Had 2 tow ropes for skiers powered by old 1950's gas truck where the entire frame of an truck was there and the rope system ran on the rear wheel. had to go to federal compliance hearings to rebuild shed housing them because lacked modern sumps / bilges in case engine oil leaked out of engine. Plus of course modern fuel gasoline tank to hold fuel. Then a fire suspression system beyond a fire extenguisher. BUilt in the 1920's had an out house bathroom. Hole in the ground for human waste. Ticketed for that had to remove odd house. Put in a porta potty , ticketed for not have it anchored and on and on. Also non members would walk right into the cabin all hours of the night thinking it was public access since its in the middle of the national forest. Demanding to use restroom, park block road access, throw trash away. not talking a few people ... On weekends hundreds non members being a couple hour drive from millions of people. I left when feds going after the septic tank for the cabin. A few paying to keep the cabin. only used tuesday thru thursday because too many weekenders blocking trails and parking so close to trailer couldnt load unload or even get out. Left the club because would ride past the 40 acreas all over the NFS trails. The trails adjacent to property because registered "hiking" trails so couldnt cross them on motorized vehicles to ride rest of forest.