I'm not sure "fib" is the right word. That would imply a cheat of some sort. I met/exceeded the standards they set on a test that they control, and I did it by following every guideline they have. There's no rule against using alternative fuels or fuel additives.#greyarea
Brand new vehicles are exempt for like 5 years or something like that. Maybe less. IDK, I'll never own a brand new vehicle.
'96 and newer get the OBDII check. No MIL and a good gas cap = pass. Usually no visual.
'95 and older go on the rollers and get sniffed. Under the CO and HC limits and have any gas cap = pass. Usually a visual.
All "Heavy Duty" trucks go on the rollers regardless of age. Probably a visual.
I'm thinking, because the S10 is a '97, I'll get the OBDII only test. A lazy inspector would be nice also.