I only use ethanol-free which is only avail as 90-octane, so use a booster to increase it by 3. I have heard it is not good to run the tune below 92/93, but I have no proof of that. Hopefully a Ford engineer chimes in here...
I used the blue marine Stabil for years in everything I own from weed wackers to my vehicles along with ethanol-free 90-octane gas. But I recently switched to PRI-G after thorough research on fuel stabilizers. Also now that I did a Procal tune on my 2.7, I have to add an octane boost to the...
Replaced the rock slingers after only 500mi with Toyo OC AT3 since I live on gravel roads. What a difference, my rig no longer sounds like a popcorn machine when I hit the pavement lol