Has 190000 miles and automatic. Anything i should be worried about with that high of mileage. Especially dealing with the drivetrain and the 4 wheel drive?
2002 Nissan Frontier Supercharged
Transmission usually dies on those far before that mileage. And your supercharger if original probably isn’t providing anywhere close to it’s original boost either. If you plan on keeping it I would up the oil change interval to about 2500-3000 miles. Being supercharged at that mileage with wear on the rings and seals the likelihood of you getting blowby and unburnt fuel into your oil is high. Oil dilution is an engine killer. Unless you plan on rebuilding the motor your only option is to increase oil change frequency. You should put it into 4WD at least once every 2-3 months and drive it a few miles. Find you a dirt or gravel road to do this on. That will keep the hubs and transfer case actuators from seizing up eventually from non use.
I would have fluid changed in transfer case and both differentials, and do transmission maintenance every 30k miles going forward, just drain whats in the pan and clean it out, change the filter and add new fluid back. Never do a flush. Not familiar with xfer cases around your year but it may share fluid with the tranny. If so just change it when you change the fluid in the pan.
Im pretty sure it still has the original transmission and the supercharger still produces a fair amount of power for being 20 years old. Ive thought about just doing an engine swap or something of they both decided to go out.
If you really plan to keep it find a used engine in a junkyard somewhere cheap. Buy you an engine stand. Tear it down and rebuild it like you want slowly over time.
There’s really no common concerns on those year ranges they are pretty indestructible as long as maintained
