Heat range/blended gas...!??
Here in AZ we use both types of blended gas...They call it the summer blend and the winter blend, The truck is dialed in to pass emissions inspection in the summer and I basically leave it as such...
Question: Does the Spark plug heat range have any effect on the use of Ethanol/mtbe...?
...It seems my idle has roughen-up a bit since the fuel has changed over. Only the Idle (in gear) seems to be affected...accel, mileage and overall driveability seem normal.
Thanks, Chiba
happy thanksgiving FTE...!


