If the engine is running properly, there would be no measurable difference. Those engines had fairly low compression, and would run just fine on 87 octane. More octane would just make it harder to start in the winter.
unleaded, midgrade, premium
Not as long as the premium fuel is also unleaded.
Yes you can use premium gasoline in unleaded because premium gasoline is also unleaded. The only reason it is called premium gasoline is because it has a higher octance then regular unleaded. Regular unleaded has an octane rating of 87 and premium has an octane rating of 92. Premium gasoline burns slower then regualr gas because it has a higher octane rating.
always premium gas
They're usually Regular Unleaded, Mid-Grade Unleaded and Premium Unleaded.
Unleaded Premium
You can use either regular unleaded or premium unleaded.
The best gas mileage from unleaded gasoline or premium gasoline depends on the car. Old cars get better mileage from unleaded.
They are both 'unleaded' only the 'octane' rating is different. So to answer your question Yes.
Yes. The difference in their names merely reflects a difference in ad campaigns.
1995-2002 requires Premium Unleaded. 2003 requires Regular Unleaded.
regular unleaded. it states this in the owners manual