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$29 and screwing it up is totally free

 

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Deisels take a lot of oil because some use the oil as hydraulic fluid for injector pumps. It goes through a high pressure oil pump which feeds high pressure oil to the injectors. At least that's how it was on the old Ford 7.3 and I assume still is the main tech. The old school mechanical pumps (off the crank, like the old Ford IDI engines) make a lot less power, and are a lot more reliable.

I also laughed at my buddy last week. He sent me a text explaining how livid he was that the dealership couldn't get his drain pan plug off, and said the last people tightened it too much. They were the last people who changed the oil... And I've told this friend time and time again to change his own oil it only takes 15 minutes if that. I said he should chill out, he has no one to blame but himself for taking it to them.

All that said, i would guess 90% of oil changes go just fine at the dealership.

 

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It's mainly to power the fuel injectors. A low pressure oil pump feeds oil into a second oil resevoir, which then feed the high pressure oil pump (HPOP) Fuel pressure is created in the fuel injector using an intensifier piston powered by the high pressure oil to create the 21,000 psi to injector the fuel into the cylinder

all the plumbing and extra reservoirs = more oil needed for diesels (with that type of fuel delivery)

 

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Good points.

My knowledge was based off my 2000 F250 7.3 powerstroke. It was more like a powerturd. hated that truck.

From what I can tell just from quick internet searching, GDI motors only need up to 2800 psi -
all diesels I have read about are above 20,000 psi

(http://www.superchevy.com/how-to/en...engines-drivetrain/1505-direct-gasoline-injection-is-here-time-to-get-familiar/)

The modern motors may indeed use something different - looks like the 3.2 has Direct injection, high pressure common rail (26,100 psi), Piezo electric injectors. The Piezo part is just to control the injector though, not controlling pressure. In a quick google search I was not able to determine if Ford moved away from HEUI systems in the 3.2 diesel or not...

So maybe they no longer use a high pressure oil injection system. Then ya - they have more oil to carry heat away and to handle more particulate load. I am corrected!

 

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You really buy motorcraft oil which is just rebranded oil?

I buy walmart Supertech full synthetic - it's around $20 for 5 quarts. I buy then several at a time since it goes in a lot of my vehicles. The filters are like $5. Me not screwing up the job is free.

 

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10,000 Miles???? WoW!!! I dont think that is healthy for an engine to wait that long.

How many miles between oil and filter changes are all of you following?

on my tundra with 404,000 miles, I'm on 20k intervals.

What's unhealthy about the 10k interval?

 

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Anything produced after 2000 should have a very tight motor and minimal oil fuel dilution. See Toyota's million mile 2UZ-FE teardown for instance... It would still pass Toyota's QA today as a brand new engine. My 404,000 mile 2UZ-FE is a great example... I change oil like, whenever, it gets run hard and put up wet and still performs like new.

I would hope in 2015 and newer Ford can employ the same production tolerances... but that's a hope!

 

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What turd. I should have known Ford can't do anything right. But here is some more info for later reading...

https://www.f150forum.com/f70/ecoboost-3-5-l-engine-oil-fuel-dilution-problem-solved-273071/

http://www.f150ecoboost.net/forum/31-f150-ecoboost-problems/3353-tsb-14-0014-fuel-oil.html

https://www.bobistheoilguy.com/foru...m/forums/ubbthreads.php/topics/2968146/Ford_EcoBoost_3.5L_oil_study#Post2968146

All my driving is pretty much long haul so I don't have short trips/frequent cold starts, but I don't want to worry.

The choice is easy - I'm going to dump the Ford and go back to making the Sienna work.