Fuel in oil

[D Fresh]

You shouldn't need any forms or studies or any rocket scientist to tell you fuel does not lubricate.

Lubricate: to minimize friction and allow smoother movement.

Fuel will lubricate, just not as well as oil.

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[GregsFX2Ranger]

The real concerning thing to me is, 2+ qts of fuel in the crankcase, could become a safety concern?

Is there a reported case of that????? That's nearly 25%!

 

[cbull]

Lubricate: to minimize friction and allow smoother movement.

Fuel will lubricate, just not as well as oil.

Well how about we fill a lawn mower engine with fuel and see how long it lubricants. Lol.
Fuel has never been made for a lubricated purposes. There is a reason for that.

 

[D Fresh]

Is there a reported case of that????? That's nearly 25%!

I've read the entire thread, albeit in pieces, don't remember any cases that high. I do remember members doing their own fuzzy math that it MIGHT get that high if they went 10k miles between changes

Well how about we fill a lawn mower engine with fuel and see how long it lubricants. Lol.
Fuel has never been made for a lubricated purposes. There is a reason for that.

Many things will perform functions they weren't intended to do.

And actually, you're wrong again. In tank fuel pumps are designed to be cooled and lubricated by the fuel they are submerged in.

Probably why Ford wouldn't warranty pumps with water contaminated fuel systems. Because although water will lubricate, it won't do it as well as fuel, which won't do it as well as oil.

 

[MotoWojo]

Is there a reported case of that????? That's nearly 25%!

Yes, twice with my truck, drained out 8+ qts. Did not get a measurement on the 5000 mile oil change, but that oil level was higher than all the rest. That was done when the Field Service Engineer and a Tech from Ford travelled to my dealership and ran some tests on my truck. When I picked up my truck, the windows were rolled down, because it reeked of gasoline. I don't know how that happened, but It aired out quickly on the drive home. They took the 5000 mile oil sample with them, back to Ford, for testing, but they will not share the results with me. They also would not give me any paperwork for what they did that day. I have no idea what tests they ran. The dealership has shared the other test samples with me, and I have copies. They use US Oil for the testing. The last 15,000 miles of the 25,000 miles on my truck have been with this issue. The dealer has changed my oil 11 times in the past 13 months, since when this started. Yay.......free oil changes.

 

[MotoWojo]

No matter how you slice it, nobody has had anywhere close to 2qts of fuel in their oil. That's 25% dilution.

Well, maybe not quite 2 qts, but 1.8+ qts. I am positive the 5000 mile sample. that the Field Service Engineer wanted, was over that. When I first noticed this issue with my truck, over the twist oil level at ~2,000 miles on the oil, I changed the oil. emptying it into an empty drain pan, and poured that into 2 5 qt containers to get the measurement. The oil was so thin it splashed pretty badly and I did not catch it all, but it filled one 5 qt jug and 2/3 of another. The 2nd time, was at the dealership. by my request. Unfortunately. neither of those had an oil sample sent out. They have sampled 5 different oil changes for me and the lowest one was 12% with just 500 miles on the oil. The last sample was the 5,000 mile oil change interval, but Ford will not share that one with me.

 

[MotoWojo]

Here is the oil sample with 500 miles on the oil:

 

[jsphlynch]

Go ask ford how much of any contaminants in fuel they will allow and still do warranty work on that pump. I've been through this and I've got friends and family that have went through this cp4 pump issue. Any contaminants such as water, at any percent, found in the fuel system is enough for Ford to deny warranty work when damage to the pump and the entire fuel system happens.

I agree, if you are using contaminated fuel and it destroys the fuel system, Ford will not (and should not) cover it under warranty. What does this have to do with fuel leaking into the crankcase?

You shouldn't need any forms or studies or any rocket scientist to tell you fuel does not lubricate.

I never said that fuel is a suitable lubricant. However, oil with some fuel in it will still lubricate. The question is whether oil with the amount of fuel that we're seeing is still a sufficiently effective lubricant to keep our engines maintained. I'd rather have that question answered by an Ecoboost engineer than a rocket scientist, but I'll happily take actual data from whoever provides it.

Well how about we fill a lawn mower engine with fuel and see how long it lubricants. Lol.
Fuel has never been made for a lubricated purposes. There is a reason for that.

I agree, trying to use 100% gasoline in place of the oil almost certainly won't end well. But what does that tell us about a mixture that is, say, 95% oil/5% gas?

 

[Vitis805]

But what does that tell us about a mixture that is, say, 95% oil/5% gas?

That the viscosity is no longer in specification. Ford's specification for 5w30. It's not rocket science
?. We all gave you references and reading material that you asked for. It's not the best to use 5w20 in an engine that calls for 5w30, yet you keep on with the same attitude and thought process. Are you honestly not happy to have learned something?

 

[Trigganometry]

Lubricate: to minimize friction and allow smoother movement.

Fuel will lubricate, just not as well as oil.

From another post.

This engine has a forged steel crank, forged steel connecting rods, lightweight high-strength pistons with steel piston ring carriers and fully floating pins. The pistons have a low-friction skirt coating and fewer oil drainage holes for better lubrication and lower friction. The bottom side of cylinders is cooled with oil constantly sprayed by special oil jets inside the engine block.

This same engine makes 310hp in the Mustang... so it is de-tuned for the Ranger.

Of course it is going to last... Turbo rebuild around 100k..Maybe..

 

[GregsFX2Ranger]

Might as well use 5w40 if fuel dilution is supposedly going to drag the visc. down to 5w20? (5w30 to 5w20)

 

[Stangman570]

1795 post on this thread and 120 pages and still no one has gone booooom and grenaded an engine!! Damn these are one bad Azzzzzz 4 bangers... Love mine, but for everyone else hury go trade yours in on a Honda Ridgeline Quick!!! Problem solved!!!

 

[GregsFX2Ranger]

1795 post on this thread and 120 pages and still no one has gone booooom and grenaded an engine!! Damn these are one bad Azzzzzz 4 bangers... Love mine, but for everyone else hury go trade yours in on a Honda Ridgeline Quick!!! Problem solved!!!

OOOHHH YEAH, I just gotta have this one! LOL

 

[Stangman570]

OOOHHH YEAH, I just gotta have this one! LOL

Heck yeah, would you lookie thare at the ground clearance. Perfect mall crawler, just screams I'm a concrete junkie!!

 

[Vitis805]

Might as well use 5w40 if fuel dilution is supposedly going to drag the visc. down to 5w20? (5w30 to 5w20)

it’s not supposedly at all. There is data all throughout this thread that with even a little fuel dilution that oil viscosity is down to 5w20 or lower. Show me one Blackstone report with fuel dilution that still shows viscosity at 5w30 specifications.
Granted, this engine in general seems to beat up oil even without fuel dilution. Also, there are a couple members in this thread that have switched to 5w40 with success.

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