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Mine did it with both 91 ethanol free, and 87. Only thing that fixed it was injectors. Perhaps coincidentally I also switched to Shell Rotella at the same time.

I wouldn't let it stop you. I love my Ranger, and it was fixed with just a new set of injectors. Just check it before you buy it, and keep an eye on it after.

If you only had the hpfp replaced, I would definitely try to get those injectors replaced since you've still got the problem! I'll keep you guys updated!

Yeah I have not racked up as many miles as you since the fix, so I'll keep an eye on it every now and then and be sure the problem doesn't return. Fortunately for me, my current dealer has been very helpful, and the last tech who replaced the injectors actually left me a note in my glovebox as...

Yeah I sure have, the worst part is that my original dealer could have fixed this problem when the truck was practically new with 1500 miles. Injectors were my original suggestion to them. Hopefully 10,000 miles of contaminated oil doesn't lead to any long term issues.

Here's an update for everyone. As I stated earlier, after getting the injectors replaced, there was a slow rise in the oil level, but it never quite got to the top fill hole. It stabilized there for a while, so I quit paying such close attention for a while. I've checked a few times recently...

I'd definitely buy one when it hits the market.

Under warranty. I was also experiencing issues of misfires on cold startup, so that made it easier. The dealer I go to now is super cool also so that helps.

So I've put around 750 miles since I had the injectors replaced and changed my oil with shell Rotella. The oil level initially rose a little bit, from just above the hashmarks to right below the top hole. But it has froze right there. I think it's safe to say that the problem most of us are...

I'm using 91 octane ethanol free fuel. Occasionally 93 from other stations. Right now I'm hoping the injectors have fixed the issue for me. Finishing a road trip today and I'll feel confident after that.

I had the same to thought about water, even though I was living in hot, dry, west Texas. So I put the concoction into a spray bottle and sprayed it onto an open flame. Sure enough it ignited about as well as anything. So I ruled out water as a primary ingredient in that mix.

I had the same thought about the water myself. So as a test I put the c If it's still below the top dot I'd say you're safe! Keep an eye on it though. And you'll naturally have more wear on that first oil change just from the engine break in.

Just got my truck back from the dealer, they applied a TSB for the truck running rough at cold start idle, but according to their notes that didn't do anything. So they went ahead and replaced all 4 injectors, and now it runs great, including at cold idle. Fingers crossed that this also fixed...

That's just awesome! I really wonder which changes actually did that for you. Did you tune it before or after the change in what your catch can was capturing?

If it isn't above the top hole I wouldn't worry at all, everything is fine. Now for those of us getting oil above the twist on the dipstick in just a few hundred miles, there is definitely something to be concerned about...

I guess if I need to make a tight turn I'll switch back to 2wd... Using 4wd also helps keep washboards from forming/growing, so you'll do everyone a favor using 4wd more.

There is nothing wrong with using 4wd... When I'm off road I typically turn it on once I hit the dirt, and don't turn it off until back at the pavement. I'll switch between 4hi, 4lo, and engaging my locker as required by terrain and grade. Leaving your truck in 2wd while climbing steep grades...

About a week and a half ago I decided to check the oil level after a few hundred miles since the hpfp was replaced and I had put fresh oil in. It was very high, above the twist in the dipstick, when I had changed the oil I only filled it to the top of the hashmarks. To get it just below the top...

And did you use the Rotella gas truck 5w-30 full synthetic? I'm gonna try to replicate exactly what you did. Thanks!

What exhaust did you switch too? I'll have to try using rotella. That is exactly how I first discovered there was a problem, my catch can was filling up with raw fuel. It can't come from anywhere but the crankcase, clearly indicating the oil was contaminated by a very large amount of fuel.