I wasn't having cold start issues in the mornings. I was having issues where I would drive away and within 1-2 miutes, after pulling on to the highway, one of the injectors would drop out for about 30 seconds or so. When this happened, it would also cause the trans to shift late or wierd. These issues were only in the mornings and only below 40*F. The colder it was the worse it was. Truck was still driveable and it would clear up within 30 seconds.

I have always used whatever name brand 15-40 oil I could get on sale, and after reading about the syn and semi-syn oils I decided to try the T-5 (semi-syn) back in January. Unfortunately, it didn't help my situation at all as it did for some others who switched to these oils.

I used 1 gal. of Hotshot Secret last winter, and it seemed to help a little, but on the colest mornings, it would still act up occasionally, and this winter, the issues were back.

I bought the two 4oz. bottles of REV-X and added them to the T-5 about 6 weeks ago. I wanted to wait until we got some lower temps <30*F to report about it. In short, it works. The slight stiction that I have been experiencing for the last several winters is nowhere to be found. It runs much better and is quieter when it is cold. I assume this is from the injectors being able to deliver the fuel charge more precisely.

I will be due for another oil change around october, right before winter. I plan on going back to the 15-40 without adding any additional additives and reporting in this post my findings.

 

That doesn't really sound like stiction.

 

Please elaborate

 

Loubell have you checked your FICM voltages? Boss's truck does this and his FICM is bad. He's just waiting for it to die to replace it. Which is a bad idea btw. But he's stubborn as a mule.

 

I have not checked my FICM voltages. If it is a FICM issue, why would it completely dissapear after using the Rev-X?

 

Well Rev-X will never cure stiction so if you were experiencing stiction, you'll have stiction until you get new injectors, you may just notice 'less' stiction after Rev-X but the underlying problem is still there. However, what you described doesn't really sound like stiction. In layman terms: stiction is worst when your oil is at its thickest (coldest) so it doesn't make sense that your stiction would show up only after it's warm which is why unreal04 suggested FICM voltage problems. There are probably a few other things that can cause missing at speed but people who work with the 6.0 everyday would have to step in here to give you some ideas. I deal with theories and design and as such don't have a lot of hands on troubleshooting knowledge with these motors.

 

I understand this, but if you re-read my OP, I said that after 1 or 2 minutes, so I doubt the oil was anywhere near warm.

To put it in other words, start up to the highway (1 minute), no issues. Accelerate onto the highway 1 injector dropping out for 15 -30 seconds.

 

At 1-2 mins the oil may not be warm but it's still warmer than when you first started your engine so the rule still applies. The only thing that could make me think stiction is the increased speed of your injectors (highway speed) and still relatively cold oil but that's a long shot. Are you going straight from your driveway to the highway, no streets? How sure are you that the 15-30 second issue is actually an injector?

 

From my driveway, to the street, left turn downhill to the highway. 1:30 tops.

You mean was an injector because the issue is, for now, gone. I'm not sure that it was an injector, as I would need to have some expensive diagnostic equipment to find out while the truck was in motion.

I guess the way I would describe it would be like a spark plug not firing on a gasser V8. So I assume that because there is no spark plug, either there is one cylinder that is exeptionally cold (maybe a bad glow plug?) or one of the injectors is hanging up. I kind of ruled out the glow plug, because it starts OK, and the 1 to 2 minutes it takes to get to the highway would warm up each cylinder at least a little bit.

 

Hmm, interesting. I'd still lean towards something other than stiction but being that the symptom is gone there's no way to really check it out. Maybe next winter.

You can actually get info on each injector though a ~$150 scangaugeII. I would say that a majority of people on this forum have the gauge running 100% of the time. That might be well worth looking into.

 

I have heard of the scangaugeII, but I thought it was more $$ than that. I will check it out. Thanks for the replies and the input.

 

Maybe a little more technical explanation of stiction would be appropriate, at least for me, and why only new injectors will fix it, especially if it's an oil related problem.

 

has anyone ever sent in a sample of revx to see whats in it?
Stiction happens to everyone if you dont have it yet you will in time.I dont think there is anything you can do about stopping it from happening.

 

I thought stiction was one of the reasons people choose to upgrade there ficm to the 58volt mod.