Tgunsthought

First time ford non naturally aspirated motor, Purchased week before Harvey

chimmike

longevity? spend time researching Bob Is The Oil Guy on using good oil, and use good filters. Ford filters are good.

I found the 3.5 ecoboost motors like the Castrol Magnatec. Also, keep the oil change interval to ~5k miles or less. Direct injection results in fuel dilution in the oil.

Use good name-brand gas that has detergents.

And romp on it once in a while, let the turbos burn some of the carbon out.....wind it out!

Changing air filters consistently prevents odd debris from damaging compressor wheels, etc.

acdii

Pretty much spot on here. Oil change intervals can be longer IF you drive a lot of highway like I do. The only time my 14 had gas in the oil was running an economy tune from 5* on the highway, Got crappy MPG, ran lousy and dumped raw fuel in the oil. It smelled like oil from a really old worn out lawnmower. The rest of the 63K miles on it I used the recommended oil changes, done by the dealer, and not a single problem. My current truck has 23K on it, and had 2 changes so far.

I have had 3 other 3.5 EB's in Flex and MKT, and a 2012 EB, and short drives in those did result in gassy oil. So depending on how fast you drive and for how long will determine when you should change the oil, I agree, short drives in city traffic, change it ~5K, but long daily drives you are good with the change interval recommended by the oil monitor built into the truck, it will also take into account trailer towing and reduce the miles between changes as needed.

BigDozer66

Good thing the '17 3.5L EB has "Ford-first dual-direct and port fuel-injection system" then so there is no longer a problem with gas in the oil dilution.

Well at least we hope that is the case on the new engines.

chimmike

well, based on what I smelled in my first oil change, there's still dilution, which is why I recommend oil change at 5k miles or less

Eduskator

Frequent oil changes and good fuel. Put some high grade once in a while and make sure to floor it once in a while...

I would not do 5k oil change intervals, unless your truck asks for one. Although the intelligent oil life monitor system can sometimes not be reliable, I'd stick to what Ford engineers recommend. They way more knowledgeable than members on this forum (sorry, no offense!).

acdii

You are contradicting yourself when you say frequent oil changes, and then in the next paragraph say not to do 5k changes, which would equate to frequent changes.

So which is it?

The oil monitor determines based on miles, time, and how it was used, but can't detect if there is excessive fuel in the oil from short city drives. If a person is diligent about checking the oil frequently, they can determine if they need an oil change sooner, rather than later by the smell and consistency. The oil is pretty thin to begin with, but get enough fuel mixed in and it will become apparent that it needs changing.

Tgunsthought

What do ya'll think about catch cans, will this approach help or is this just a rabbit hole

Eduskator

By frequent oil changes, I meant the recommended ones or a little less. Some people go over them by a few thousand miles every time.

According to my computer, my 2017 will run 10k miles before asking for an oil change (I'm at 2000 miles and it shows 80%). I will change the oil once my computer will show 10-20% of oil life remaining. It will be in spring, which is perfect. Winter is always harsher on engines.

Eduskator

I think that if it was really important, Ford engineers would have built an engine with an integrated catch can, which is not the case.