Bwana Bob
Well-Known Member
- Joined
- February 2, 2002
- Messages
- 757
- Reaction score
- 8
- City, State
- Morris Plains, NJ
- Year, Model & Trim Level
- 92 XLT
I can always tell when it' autumn and they change over to winter blend fuel. My Ex starts pinging. I do the Seafoam or Techron treatment regularly and she was fine all summer. Here in NJ they use the reformulated/oxygenated fuel.
Engine is the 4.0 L OHV. Trans is 5-speed stick. Diff is 3.27.
I've switched up to 89 octane but she still pings on the highway at certain rpms.
I've read all the threads on this subject but it seems to be a seasonal issue now. Should I just pull the "Octane plug" until spring or use octane booster?
BTW I'm running Autolite plugs. Some say that the OHV likes Motorcraft plugs better. Would plugs make a difference?
Thanks.
Bob
Engine is the 4.0 L OHV. Trans is 5-speed stick. Diff is 3.27.
I've switched up to 89 octane but she still pings on the highway at certain rpms.
I've read all the threads on this subject but it seems to be a seasonal issue now. Should I just pull the "Octane plug" until spring or use octane booster?
BTW I'm running Autolite plugs. Some say that the OHV likes Motorcraft plugs better. Would plugs make a difference?
Thanks.
Bob