The plugs are great-- zero issues, can't tell a difference.
Only issue I’ve had is having 2 spark plugs blow out. The first time required a replacement head and the second was fixed with a helicoil. Most reliable vehicle I have owned.
I've put about 100 miles on them and the car seems just as happy as ever. Went for a spirited drive today out in the hills and the car felt responsive and strong through the power range.
I have an aero 50. I don’t recall what’s recommended on it, but when I was living in the Pacific Northwest, I found that while using premium, it ran significantly better. Smoother idle, better acceleration.
These are Autolite plugs, not Motorcraft. Which means the plugs in this vehicle have been changed before, that probably has a little to do with why it was easier than usual to get these out. By the looks of the plugs and the lack of carbon buildup and corrosion (the two factors that cause these plugs to size the most) I'd say they weren't in there for a very long time either. Going by my experience with Autolite plugs in Fords (very little experience as I work on Euros mostly) if they don't start misfiring right away it's usually within a couple of months.
Definitely do NOT recommend Autolite spark plugs.
Don't use autolights. AC Delco for GMs & Motorcraft for Fords. Modern ignition systems are sensitive to plugs so I use whatever the OEM does (within reason)
Auto lights are trash, Bosch too. I can’t tell you how many times I get a misfire diag that the customer already put plugs in, only to find the garbage auto lights are the issue. A set of oem plugs always fixes it
I replaced the original ac Delco spark plugs (shown in picture, THEY LOOK BAD) and put with new auto light ones and changed the wire as well. However, after doing so, my truck has been running really rough, almost like it's cammed and misfiring, when its rolling in drive it like to have a little shake.
As long as it’s not auto lite plugs you should be good. I’ve seen those things hinder 3 separate rigs from running right. Once one cracked 100 miles after installing them, half way through a trip we had to sop at autozone and replace plugs
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