I have a used & abused chevy astro 4.3 v6 engine , it is showing 253, +++.+ And i don't believe the trans fluid has ever been changed, lack of maintenance has been the p.o 's claim to fame! I guess that is why i got it so cheap 100.00 dollars, complete tune up, replace brakes all the way around & replaced the fuel pump , my moto is do what ever you want with the engine,but if the Trans has not been serviced at or around 60, 000 miles you may be asking for trouble ! The most milage I have ever gotten out of a truck was 711,651 miles on a truck i bought for parts, the truck to be repaired got hit & cracked the rusted frame s i pulled the engine & trans out rebuilt them & ran the hell out of that little ford ranger i had for 7 years , til it' s untimely demise , i got married & needed a family car , so with cash for clunkers we traded it in , took over 1 year to kill that truck & yes i do miss it!
