Just added rev-x

[Powerstrokinva]

I added Rev-X with my last oil change. Cold starts are getting progressively smoother. Only have about 75 miles since I added it. It will take some time to work the crud off the injector's spool valves I'm sure. OP- check your FICM voltage. My truck started running rough until it was warmed up this past fall. Got worse and worse until I finally checked my FICM voltages. Saw as low as 26 volts! Sent my FICM to ficmrepair.com and it almost completely fixed the problem. Truck runs 100% better cold and warm now. I only have a slight chugging or roughness on very cold mornings (less then 30*) if I don't plug in the block heater.

[Galaxie]

I had zero issues. Added Rev X for cold starts. My cold starts realllly cleared up.

[cRaZy8]

Originally Posted by Galaxie

I had zero issues. Added Rev X for cold starts. My cold starts realllly cleared up.

Same here. I have new injectors with less than 10k miles on them.
I use 4oz every oil change. Starts like a dream in the cold.
Not bad today after an overnight cold soak, and windchills below 0.
She jumped to life with little disagreement.

[usnavyad]

Hmmm y'all keep posted when I start here up 2 marrow I will really know

[SySx]

I added Rev-X Saturday before it got super cold. The truck starts right up and idles real smooth now. I'll use it again.


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[usnavyad]

Sounds like more good then bad

[SDER1]

I used Archoil 9100 a year ago with Delo 15W40 at an oil change. I noticed what was believed to be "stiction" and noticed some almost jerking when cruising on the interstate and passing over an overpass. The second day, the engine quieted down on cold starts and no issues on cruise control passing overpasses. Had an oil change later in the summer and no use of the Archoil, no signs of stiction. Approaching the clock for an oil change and will probably use Archoil this time as a preventative. I have yet to try Rev X.