I have a 2016 F150 with the 3.5. I don't tow with it and it's driven very easy. Should I expect this issue over the next 10 years. I will be keeping it for the long term. 
Ford Eco Boost engines and fuel dilution issues.
- Thread starter dbvettez061
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Consensus seems to be that they all do it and the way to deal with it is change oil every 5k. Use a nice 10w-30
SilverFusion2010 said:
Many of the EB motors here (and other OEM engines with turbos) are showing fuel dilution in their UOAs. I've yet to see it in my engine, but I only have 20,000 miles. While I'd rather not have fuel in my oil, I'm not too worried about it. There are a lot of EB motors on the roads and Ford forums are seeing the high mileage units hitting 200-300k miles already. Plus most UOAs here are not showing excessive wear metals.
The EB motors are hard on oil and many are showing it being sheared down near or into the 20W spec. The two UOAs I've posted here show my M1 is down near the bottom of the 30W spec after 4,500 miles (lots of idle time). Others running Magnatec for a full cycle (8,000+miles) show the oil holding nicely in the middle of the 30W spec (hence the bromance BITOG has with that oil in the EB). Fuel dilution and hard engine use can lead to shearing from what I can tell, so until you know your oil can hold up for a full cycle according to the Ford OLM, I think the 5,000 mile cycle is a good safe place to keep things happy.
The EB motors are hard on oil and many are showing it being sheared down near or into the 20W spec. The two UOAs I've posted here show my M1 is down near the bottom of the 30W spec after 4,500 miles (lots of idle time). Others running Magnatec for a full cycle (8,000+miles) show the oil holding nicely in the middle of the 30W spec (hence the bromance BITOG has with that oil in the EB). Fuel dilution and hard engine use can lead to shearing from what I can tell, so until you know your oil can hold up for a full cycle according to the Ford OLM, I think the 5,000 mile cycle is a good safe place to keep things happy.
Originally Posted By: dbvettez061
SilverFusion2010 said:
Originally Posted By: tig1
I may be buying a 2017 Fusion soon to replace my Focus. I will not get the 2.0 Ecoboost because of direct injection(the 2.5 NA engine is ported FI), and the high pressure fuel system.
I wouldn't consider anything but the turbo. I've got the v6 that makes 240hp in my 2010 and it is fun to drive. That 2.5 is rather boring.
I'd drive them before making your final decision.
I may be buying a 2017 Fusion soon to replace my Focus. I will not get the 2.0 Ecoboost because of direct injection(the 2.5 NA engine is ported FI), and the high pressure fuel system.
I wouldn't consider anything but the turbo. I've got the v6 that makes 240hp in my 2010 and it is fun to drive. That 2.5 is rather boring.
I'd drive them before making your final decision.
I have a F-150 2013 with 40,000 miles. It has had nothing but dino HDEO 15w-40 oil in it since it was new. We have more engines on this farm than most people will ever own in a life time and they all get run hard. We have never lost an engine and have never run any syn oil. Every engine runs the same 15w-40. Some of these engines are 40 years old and still running. Why waste your money on an oil sample. Just change it every 5,000 miles or so and live with it. They are a very good engine.
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Originally Posted By: tig1
I may be buying a 2017 Fusion soon to replace my Focus. I will not get the 2.0 Ecoboost because of direct injection(the 2.5 NA engine is ported FI), and the high pressure fuel system.
Man you gotta test drive one of those 2.0 Ecoboosts,the powerband when you step on it is awesome!! If they're just like the 2.0 MKZ's they'll get rubber shifting into second gear!
I may be buying a 2017 Fusion soon to replace my Focus. I will not get the 2.0 Ecoboost because of direct injection(the 2.5 NA engine is ported FI), and the high pressure fuel system.
Man you gotta test drive one of those 2.0 Ecoboosts,the powerband when you step on it is awesome!! If they're just like the 2.0 MKZ's they'll get rubber shifting into second gear!
Originally Posted By: SilverFusion2010
Originally Posted By: tig1
I may be buying a 2017 Fusion soon to replace my Focus. I will not get the 2.0 Ecoboost because of direct injection(the 2.5 NA engine is ported FI), and the high pressure fuel system.
I wouldn't consider anything but the turbo. I've got the v6 that makes 240hp in my 2010 and it is fun to drive. That 2.5 is rather boring.
I'd drive them before making your final decision.
I drive cars for many miles. The high pressure fuel system will cost a bundle if replaced, I am told.
Originally Posted By: tig1
I may be buying a 2017 Fusion soon to replace my Focus. I will not get the 2.0 Ecoboost because of direct injection(the 2.5 NA engine is ported FI), and the high pressure fuel system.
I wouldn't consider anything but the turbo. I've got the v6 that makes 240hp in my 2010 and it is fun to drive. That 2.5 is rather boring.
I'd drive them before making your final decision.
I drive cars for many miles. The high pressure fuel system will cost a bundle if replaced, I am told.
The direct injection pump is very expensive.
It has to create enormous pressure and is under a very high load compared to something like a sub 200HP DSI sedan.
High HP DI apps typically shear oil.
This is why proper maintenance is critical to the ecoboost or any high HP DI engine with lots of HP/TQ/ Chains and valves.
UD
It has to create enormous pressure and is under a very high load compared to something like a sub 200HP DSI sedan.
High HP DI apps typically shear oil.
This is why proper maintenance is critical to the ecoboost or any high HP DI engine with lots of HP/TQ/ Chains and valves.
UD
Originally Posted By: UncleDave
The direct injection pump is very expensive.
It has to create enormous pressure and is under a very high load compared to something like a sub 200HP DSI sedan.
High HP DI apps typically shear oil.
This is why proper maintenance is critical to the ecoboost or any high HP DI engine with lots of HP/TQ/ Chains and valves.
UD
A Ford certified mech told me the high pressure pump is something like $1200-1500 for the DI ecoboost fuel pump.
The direct injection pump is very expensive.
It has to create enormous pressure and is under a very high load compared to something like a sub 200HP DSI sedan.
High HP DI apps typically shear oil.
This is why proper maintenance is critical to the ecoboost or any high HP DI engine with lots of HP/TQ/ Chains and valves.
UD
A Ford certified mech told me the high pressure pump is something like $1200-1500 for the DI ecoboost fuel pump.
sounds about right.
Im an old guy so my expense references are based on my HP/dollar costs
Lets say 1250 for the pump and how much to put it in you think? Half a day at 125 an hour? (I really don't know but Im curious)
Call it 1600plus down the vehicle use for min 1 if not 2 days. Pretty spendy.
Typically a stealership will "find few more hundred dollars you'd have to spend "while you are in there "and probably be closer to 2K.
Compare to my 400 dollar Aeromotive 1000 on a 725hp /816 ft lb big block chevy that soundly trounces any ecoboost including the newest 650HP 450K supercar version.
I can replace It myself a 2 beer job it in a few hours with hand tools.
In terms of dollars per HP per mile of use if your DI pump goes you are getting a solid repair bill.
UD
Im an old guy so my expense references are based on my HP/dollar costs
Lets say 1250 for the pump and how much to put it in you think? Half a day at 125 an hour? (I really don't know but Im curious)
Call it 1600plus down the vehicle use for min 1 if not 2 days. Pretty spendy.
Typically a stealership will "find few more hundred dollars you'd have to spend "while you are in there "and probably be closer to 2K.
Compare to my 400 dollar Aeromotive 1000 on a 725hp /816 ft lb big block chevy that soundly trounces any ecoboost including the newest 650HP 450K supercar version.
I can replace It myself a 2 beer job it in a few hours with hand tools.
In terms of dollars per HP per mile of use if your DI pump goes you are getting a solid repair bill.
UD
Last edited:
4WD
$50 site donor 2025
Just started my 3.5L eb on M1 5w40 ... going to run per OLM instead of 5k ...
Its an awesome truck.
Ive had the pleasure of towing a 7500Lb boat thousands of mile with 2 different one one a fx4 wth 373 the other a 3:55 bench seat truck
They annihilate ALL the NA trucks in my area which combines blazing heat with some altitude (Davis Dam Road)
Id load the thing up with magnets to get as much FE out of the oil as possible
FIltermag claim that they are good for one full iso code drop in particles, for the price why not keep the chains as clean as you possibly can.
once the chains stretch its expensive.
congrats.
UD
Ive had the pleasure of towing a 7500Lb boat thousands of mile with 2 different one one a fx4 wth 373 the other a 3:55 bench seat truck
They annihilate ALL the NA trucks in my area which combines blazing heat with some altitude (Davis Dam Road)
Id load the thing up with magnets to get as much FE out of the oil as possible
FIltermag claim that they are good for one full iso code drop in particles, for the price why not keep the chains as clean as you possibly can.
once the chains stretch its expensive.
congrats.
UD
4WD
$50 site donor 2025
You know good and well Ford selected a 3.5L V6 to market everyday cars.
I'm waiting for the 5.0 ecoboost they'll be putting in the super duty trucks. It makes me smile
+1 My Hyundai DI engine has fuel dilution issues . I like M1 10W30 (engine is spec.'d for 5W20) and run 5,000 mile OCI's . The M1 has a low NOACK (oil evaporation) and low calcium which play nicer in DI / DI turbo engines (prevent pinging) .
Originally Posted By: Onug
Many of the EB motors here (and other OEM engines with turbos) are showing fuel dilution in their UOAs. I've yet to see it in my engine, but I only have 20,000 miles. While I'd rather not have fuel in my oil, I'm not too worried about it. There are a lot of EB motors on the roads and Ford forums are seeing the high mileage units hitting 200-300k miles already. Plus most UOAs here are not showing excessive wear metals.
The EB motors are hard on oil and many are showing it being sheared down near or into the 20W spec. The two UOAs I've posted here show my M1 is down near the bottom of the 30W spec after 4,500 miles (lots of idle time). Others running Magnatec for a full cycle (8,000+miles) show the oil holding nicely in the middle of the 30W spec (hence the bromance BITOG has with that oil in the EB). Fuel dilution and hard engine use can lead to shearing from what I can tell, so until you know your oil can hold up for a full cycle according to the Ford OLM, I think the 5,000 mile cycle is a good safe place to keep things happy.
Originally Posted By: Onug
Many of the EB motors here (and other OEM engines with turbos) are showing fuel dilution in their UOAs. I've yet to see it in my engine, but I only have 20,000 miles. While I'd rather not have fuel in my oil, I'm not too worried about it. There are a lot of EB motors on the roads and Ford forums are seeing the high mileage units hitting 200-300k miles already. Plus most UOAs here are not showing excessive wear metals.
The EB motors are hard on oil and many are showing it being sheared down near or into the 20W spec. The two UOAs I've posted here show my M1 is down near the bottom of the 30W spec after 4,500 miles (lots of idle time). Others running Magnatec for a full cycle (8,000+miles) show the oil holding nicely in the middle of the 30W spec (hence the bromance BITOG has with that oil in the EB). Fuel dilution and hard engine use can lead to shearing from what I can tell, so until you know your oil can hold up for a full cycle according to the Ford OLM, I think the 5,000 mile cycle is a good safe place to keep things happy.
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