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Fuel in oil

Zaph

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I'm new here. I recently just bought the 2021 Ranger velocity blue 4x4. I noticed people were having issues with the gas in the oil, I thought maybe it was a 2019 problem but I checked mine and mine smells like gas too. So I'm a little concerned. But I bought certified preowned with 1499 miles on it so it came with extended warranty. So at least I'm covered if it develop issues. Now I'm kinda wondering if the last person sold it because of that lol. Overall, I love the truck.
No worries. Most oil smells like gas at least a little. But your nose isn't a very objective test. Pull a sample and send it out next oil change. It's cheap and easy.

So is this going on in every Ford ranger?
You can see a broad spectrum of test results in the test results thread. It's not very widespread and IMHO people 5% and under probably don't have to worry about it. I like to pop into this thread once in a while and remind newcomers to get their tests in there. (or like me, update your results over time)

I'm racking up the miles and have 3 tests back to back now. .5%, 2.8% and this time back down to 1.5%. (yay) They called the higher test likely "Incidental factors". But what I can say is that the higher fuel dilution number was more winter driving for that interval while the lower was more summer driving with almost all other factors being equal. There's something to be said for temperature of operation.
 

Langwilliams

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I think anyone getting more than 3 or 4 percent fuel dilution in a 5K oil cycle should have been given an extended warranty.
 

N. J. Jim

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I think anyone getting more than 3 or 4 percent fuel dilution in a 5K oil cycle should have been given an extended warranty.
Yeah your right they should have been given an extension on their warranty's. Especially considering the money we're putting out for these trucks!
 


Langwilliams

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I mean… they already have our money why would they care haha
It might help build brand loyalty. The people having the extreme fuel dilution problem probably bought their last ford. They will discourage their family an friends from it too.

I've bought roughly 20 cars in my life. Most being new an a few preowned. Most of them fords. If I had gotten a total lemon early in the process I might have changed brands. I leased a few an traded a lot of them in as soon as the break even mark came (or a little before)....if this a typical ranger buyer will only keep it 2 or 3 years ford might be banking on they getting rid of it before they start having problems related to it. IMO it would be smart to take them out of circulation when they're returned from lease or traded in. It would soften the expense of writing them off.
 

Zaph

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I think anyone getting more than 3 or 4 percent fuel dilution in a 5K oil cycle should have been given an extended warranty.
I honestly don't think an extended warranty is going to help for that small of a fuel dilution issue. I mean who knows what the effects of 3-4% really are. It might just mean that instead of 250,000 miles you only get 200,000 miles before your engine bearings are shot from the wear of diluted oil and your piston compression is way below spec.

The crew in trouble are the 10%+ crowd. And they don't need an extended warranty, they either need the problem solved or they need a new engine.
 

Langwilliams

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I honestly don't think an extended warranty is going to help for that small of a fuel dilution issue. I mean who knows what the effects of 3-4% really are. It might just mean that instead of 250,000 miles you only get 200,000 miles before your engine bearings are shot from the wear of diluted oil and your piston compression is way below spec.

The crew in trouble are the 10%+ crowd. And they don't need an extended warranty, they either need the problem solved or they need a new engine.
I could live with getting 200K out of an engine. 250K or more would be ideal. I'm thinking of the guys that might lose an engine in under 100K, that's who the warranty would be directed at. I'm all for Ford giving replacement engines to the people getting 10% plus dilution in an oil change cycle before failure. Ford should replace those motors an reverse engineer them to find the real problem.
 

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I read the SAE article I mentioned. Very interesting. Previously I mentioned throughout my several tests, the winter oil samples measured higher fuel dilution.

This article shows a curve where fuel in the crankcase oil vaporizes out of the oil less and less as the oil runs cooler, and more as it runs hotter. It makes sense, but they put numbers and a curve on it. At one test temp, 95 C (203 F) 50% of the fuel the entered the oil stayed in the oil and the rest vaporized. The curve spanned a wide temperature range though, and some temps unrealistic for engine operation. So there is always going to be some fuel there. So people with high dilution, we have to wonder what temperature your oil is at.

Do we have a oil temp sensor in the crankcase that could be read with the Torque app and a bluetooth OBD2 adapter? That would be some good information for all of us, and might point to some trucks running too cool. Possibly due to thermostat or ECU error.

The Honda CR-V with the fuel in oil issue, I believe were corrected by Honda with an ECU flash that just made the car run warmer.

Just some ideas to throw around
 

Jrel209

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It might help build brand loyalty. The people having the extreme fuel dilution problem probably bought their last ford. They will discourage their family an friends from it too.

I've bought roughly 20 cars in my life. Most being new an a few preowned. Most of them fords. If I had gotten a total lemon early in the process I might have changed brands. I leased a few an traded a lot of them in as soon as the break even mark came (or a little before)....if this a typical ranger buyer will only keep it 2 or 3 years ford might be banking on they getting rid of it before they start having problems related to it. IMO it would be smart to take them out of circulation when they're returned from lease or traded in. It would soften the expense of writing them off.
I mean…. Even though i have a ford and i love this truck. I doubt itll outlive a tacoma or frontier of the same year. And ford already isnt known for their reliability, just look at the numbers there is no comparison between ford vs honda/toyota. Their customer service in a few of the dealers ive been too have been less than avg. i have to drive 35min just to get decent service and im still waiting on a warranty claim thats been a couple months…. Who knew paint protection film was on back order for that long, its a joke. But to your point ya this will more than likely be the last american brand car i ever purchase. Its been a headache. Fuel dilution, shudder, paint protection already coming off……but shit i hAve fun driving it still and still putting money in upgrades. Im hoping for a good 8 years, but im skeptical haha.
 

slm

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I mean…. Even though i have a ford and i love this truck. I doubt itll outlive a tacoma or frontier of the same year. And ford already isnt known for their reliability, just look at the numbers there is no comparison between ford vs honda/toyota. Their customer service in a few of the dealers ive been too have been less than avg. i have to drive 35min just to get decent service and im still waiting on a warranty claim thats been a couple months…. Who knew paint protection film was on back order for that long, its a joke. But to your point ya this will more than likely be the last american brand car i ever purchase. Its been a headache. Fuel dilution, shudder, paint protection already coming off……but shit i hAve fun driving it still and still putting money in upgrades. Im hoping for a good 8 years, but im skeptical haha.
Interesting, when you say 8 years do you mean 8 years 100% hassle free (except regular maintenance like brakes, filters, etc) ?

I'm still shopping and looking for answers to the oil dilution question and the holes in rocker panel question. The Tacoma was also under consideration, but here in Canada, the pricing just doesn't make any sense compared to the Ranger. As part of my research, I browsed TacomaWorld forum and there's a 126 page thread on the Ranger starting from when it was released. I read some of it and I got to see some of the complaints from owners and there are issues with the truck. I guess nothing is perfect all the time. The Ranger release sure did catch a lot of attention though.
 

slm

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I read the SAE article I mentioned. Very interesting. Previously I mentioned throughout my several tests, the winter oil samples measured higher fuel dilution.

This article shows a curve where fuel in the crankcase oil vaporizes out of the oil less and less as the oil runs cooler, and more as it runs hotter. It makes sense, but they put numbers and a curve on it. At one test temp, 95 C (203 F) 50% of the fuel the entered the oil stayed in the oil and the rest vaporized. The curve spanned a wide temperature range though, and some temps unrealistic for engine operation. So there is always going to be some fuel there. So people with high dilution, we have to wonder what temperature your oil is at.

Do we have a oil temp sensor in the crankcase that could be read with the Torque app and a bluetooth OBD2 adapter? That would be some good information for all of us, and might point to some trucks running too cool. Possibly due to thermostat or ECU error.

The Honda CR-V with the fuel in oil issue, I believe were corrected by Honda with an ECU flash that just made the car run warmer.

Just some ideas to throw around
That's cool that you got to read it, I tried looking for the article also. I'm wondering though, is the solution just to install a catch can system? There's a Ranger owner on you tube that seems to swear by them and I also saw a guy with an F-150 that said all EcoBoost engines should get them installed.
 

Jrel209

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Interesting, when you say 8 years do you mean 8 years 100% hassle free (except regular maintenance like brakes, filters, etc) ?

I'm still shopping and looking for answers to the oil dilution question and the holes in rocker panel question. The Tacoma was also under consideration, but here in Canada, the pricing just doesn't make any sense compared to the Ranger. As part of my research, I browsed TacomaWorld forum and there's a 126 page thread on the Ranger starting from when it was released. I read some of it and I got to see some of the complaints from owners and there are issues with the truck. I guess nothing is perfect all the time. The Ranger release sure did catch a lot of attention though.
8 years hassle free outside regular maintenance. My two first cars (civic si) did 10 years until stolen hassle free, and jetta now is almost 11.5 years hassle free outside of regular maintenance. And my first car was frequently at street races in bay area and sac raceway constantly being drag raced and daily commuted.

Again its an expectation im ok with, it is what it is. Im just tired of hearing ppl say all these lil concerns ‘wont’ be an issue and its normal.

If you were leasing or dont keep cars past 5 years i would 100% recommend it still. But past that u really gotta be sure you’re ready to work on it or spend dough on it.
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