From doing a lot of research over the years, before and after I bought my truck...... it seems like some of the highest mileage Ford’s - from the 3.3, 2.7, 5.0 and 3.5 all seem to have a common theme. These trucks were serviced at the dealer.

now I’m not saying the dealer is fool proof. We know they’re not. But it’s either the correct OCI’s these owners are following, the correct weight of oil, or the motorcraft oil. We know dealerships use the correct oil weight for their specific engine, and we know it’s mostly or always motorcraft semi synthetic.

I see so many discussions on how guys say run this weight oil because of heat, or this type of oil because of cold....... these engines were designed to specifically run the oil weight that’s in the owners manual.

the gentleman that has over 350,000 miles on his 2.7 EcoBoost without any major mishaps has always used semi synthetic motorcraft and has always went by the OCI and gotten it changed at the dealer.

Our engines were tested on this exact oil, so either motorcraft semi synthetic is severely underrated, Ford doesn’t know what they’re doing, or maybe some guys love to know better than the engineers.

It’s something to consider when you hear about or read threads about turbo failure prematurely (which seems rare), or some other mechanical issue related to a motor. The SAME goes for GM and RAM trucks.

I can’t believe the amount of people recommending a different weight oil than what’s specified.

So it’s either the correct weight oil, proper OCI or motorcraft semi synthetic that is the key to long engine and turbo life. Most likely a combination of the 3.

1. motorcraft is underrated. This oil is proven time and again in our trucks. The highest mileage Ford’s I’ve seen have run nothing but this oil for the life of the vehicle.

2. they always use correct weight oil.

3 . MOST seem to get serviced at the dealer, which forces points 1 and 2.

Thoughts ?

 

I'm just super excited that there is another discussion about motor oil.

 

we know. Oil is a lubricant. This time I’ve added correct weight, timing - not just brand.

 

I just predict a lot of folks demanding more examples of what you believe to be true. Me personally, I have my oil changed at the dealer with semi synthetic every 5000 miles and this is what I will always do. I can’t provide any info on longevity doing it this way cause I have always traded so frequently. My current truck is 28 months old which is old for me. I’m trying so hard to keep one for several years for a change.

 

True. I got caught up into the hype about this oil and that. Even though when I had my Ford Focus I beat the **** out of it and got nothing but semi synthetic motorcraft at the dealer. I traded in at 135,000 miles and it didn’t burn a drop and had same compression and ran like the day I bought it.

It just seems like the threads with major motor problems seem to be guys running different weight oils. At least that I’ve read. Either that or a tune or some major modifications. Not to say major malfunction don’t happen due to manufacturer defects - they do.

the thread about the 350,000 mile EcoBoost convinced me to stick with dealer oil changes and try not to get cute. And the Focus I owned with nothing but dealership oil.

 

The guy with the 350,000+ miles gets it changed at a quick lube place.

 

Longevity is directly related to timely performance of required maintenance procedures, including using the required specification lubricants. For my 3.5 eco that means oil changes every 5k miles with a top rated full synthetic oil. There's no mystery to it.

 

source?

 

well ****! I stand corrected then. I thought it was the quick lube at the dealer.

 

135k miles is just getting broken in. 300k miles should be a piece of cake when timely maintenance is performed, and 500k shouldn't be a big stretch, especially if it's done in a short period of time where age related failures don't factor in.