if u keep them up,, i cant think of things that go wrong with rangers,,

"Do I need to stick with this or regular oil just as good. Thanks a
lot."

You don't need to stick with the synthetic, but it is a superior oil
for numerous reasons, and fact that it can last longer means its a
better value than it appears... however, I'd say as long as you change
reg oil by every 4,000miles it won't make much of a difference since
truck engines seem to tolerate more abuse than other car/vehicle
engines. If you're putting greater strains on vehicle... towing or load
weight... or you drive your truck really fast, then I'd consider
synthetic. If I can give you some totally unrelated advice... get a K
and N air filter... a permanent one... they are expensive, but they
make sense for numerous reasons... even better airflow will increase
fuel economy.   jeff