Ohhnulix
Member
- Joined
- Dec 9, 2020
- Messages
- 40
- Reaction score
- 6
- Points
- 8
- Location
- Dade city
- Vehicle Year
- 2002
- Make / Model
- Ford ranger
- Transmission
- Automatic
My 4.0 sohc has about 180k miles on it, it’s always felt like a sluggish engine but never anything too bad, especially compared to my last 3.0. But I’ve noticed my truck seems to run considerably quieter and feel stronger if I run a higher octane fuel, usually midgrade which is like 89 octane around here. I know the 4.0s are suppose to run on 87 octane but I’ve seen a few people say the noticed the same affects while others say it’s all a placebo effect. if that is the case and my truck magically wants the expensive shit over stock, is there a reasoning behind it? Is it just something with the factory tunes or a mechanical thing? I’m not even sure where to begin looking