Illegal acts (including resetting an odometer for fraudulent purposes) are a type of question prohibited on this site. This will not be answered here.
autozone can give you a printout
I had a 1983 and a 87 some parts were interchangeable
That depends on what the car was designed to run on. If it was meant to run on 87 octane, using 89 octane can make the mileage worse.
On the super monitor on dash hold right button to reset
it will only if your car requires 89. If your car is designed for 87, then 89 will provide no benefit.
I-87 doe'snt enter New Jersey
i found with mine, that if you used 91 octane you get worse gas mileage than with 87, you also have to remember the KZ models are old and when they were running the streets the most common gas was 87 octane 91 was pretty much race fuel. so if you want better mileage i would probably go with 87.
No, Chrysler does not use reset switches.
I'd check the users manual for the programming guide.
Can't tell you the average, but my 87 LXi has 230000 0n it and runs perfectly.
139 km or 87 miles (a little over 2 hours).
33,000 miles? no that's way under mileage.