Paystar
Elite Member
Here's my take. I don't think any of them are necessary if you have good fuel at the pumps in your area.
But I do occasionally use them.
In my C13 and C15 Cat's I had, I found Cat's additive gave enough cetane increase you could actually feel it in throttle response, but it was not cheap.
In my Powerstrokes I was running Power Service. Then one time on the highway in Indiana my check engine light came on and engine started running very rough. I pulled in a Ford dealer and they diagnosed two dead injectors. They couldn't get me in so they said you can drive it home, but it will run like crap.
So I stopped for fuel and all they had was Howes. So I dumped some in and literally in 10 minutes of driving on freeway, CEL went out and truck ran perfect.
Fluke? I don't know, but the injectors unstuck themselves. So I've only run Howes after that.
But I do occasionally use them.
In my C13 and C15 Cat's I had, I found Cat's additive gave enough cetane increase you could actually feel it in throttle response, but it was not cheap.
In my Powerstrokes I was running Power Service. Then one time on the highway in Indiana my check engine light came on and engine started running very rough. I pulled in a Ford dealer and they diagnosed two dead injectors. They couldn't get me in so they said you can drive it home, but it will run like crap.
So I stopped for fuel and all they had was Howes. So I dumped some in and literally in 10 minutes of driving on freeway, CEL went out and truck ran perfect.
Fluke? I don't know, but the injectors unstuck themselves. So I've only run Howes after that.
