Originally Posted by Tacoma Mike
In Mass he reported.
Maybe he can shed some light on it but as afar as FF goes it's non toxic like i said so i can't imagine it being illegal. But places like Mass and NY have some real weird motor vehicle laws.
I'm honestly not sure about the rust proofing being illegal in Mass. I know just about anything else you do to your vehicle is. Depending on the yearly inspection station you go to sometimes you can get away with stuff, but for the most part you have to be careful with mods. . Technically you can not do anymore than two inches of lifting or lowering of any vehicle, you can not have more than 35% window tint, most aftermarket exhausts are illegal, if you have patches of rust on your vehicle (even just minor body panel rust) you can be failed, etc. . But like I said it all depends on where you go, or in some cases even who you know. Sometimes they'll be nice and pass you, some times they'll be dicks and fail ya. . . . Mass really sucks for car enthusiasts.