Originally Posted By: hattaresguy
I know a couple people with Ford and GM trucks that crested 200k before the original plugs started to misfire.
200k-250k on modern plugs before a misfire is about right. 380k? No way. He probably had a tune up done at some point he is forgetting about, same with the T belt.
I absolutely believe the rest is original though. Just goes to show you how obsessing over Amsoil in the rear ends every 30k is such a waste of time and money.
As I have said before, its not the fluids that cause longevity, it's the original design. Is it good...or bad, along with how it is driven.