Originally Posted by Machine090767
all i know is ford says use 87 octane in the ranger and i trust engineers who built my truck. it's like idiots who ask "my oil cap says use 5W30, can i use 10W40?"
If your having Idle issues, higher octane isn't a solution. maybe a tune up is.
Ha my truck say use 5W30, I ussually end up putting in 10W30. I can never remember when i buy it.
As for the tune up. My plugs and wires have right around 20k on them, I have run 3 cans of seafoam and a bottle of injector cleaner through my truck since july. I dont think I need a tune up.
The only think I can think of that would be a problem is that something in the fuel system is not working properly. I do not have a CEL. Although the higher octane fuel would not solve the problem if this is the problem.