If you have direct injection, every 3000 to 4000 miles. Direct injection and high EGR flow dilute and soot the oil, plus lots of heat and stress on the oil from higher engine temps and higher compression, especially with turbocharged engines.

Direct injection engines with around 50-60k already have coked the oil rings up on many teardowns I've seen, even ones that look like the oil has been changed fairly regularly.

Watch the youtube channel I DO CARS and see what a mess inside modern engines make.

 

It never ceases to amaze me that people will spend $50k or more on a new vehicle, then cheap out on maintaining it. No wonder so many late model engines are in such bad shape. I’ve heard many stories, some right here on this site, where a leased vehicle never had even the first oil change done.

 

So true. I'm on a diesel car forum and there is a group that pride themselves in extended oil changes. Like 10 and 15k miles between changes. They will send samples to Blackstone until Blackstone says the oil is "bad". I'm like WTF?

 

How many oil changes can you pay for by the time you send in multiple oil samples?
I do oil samples at the oil change to make sure nothing is going wrong, and to be sure I'm not running my oil too far.

I'm doing 6k miles now. Blackstone says I can safely go to 8k, but I'm not going any farther than I am. The wear metals on mine at 6k are great and so is the additive package. Why push it until wear metals go up and the ad pack deteriorates.

 

I’ve never sent in an oil sample in 44 years of owning dozens of used and new vehicles. I’ve never blown or damaged an engine due to an oil related issue. I just use good oil and filters, 5-7k miles between changes. I never go by the oil life monitor, or by wild claims that a certain brand of oil can go 15-25k miles.

 

Light comes on around 7500 miles.
After that, I will stop to get some oil and a new filter.
Soon after, I’ll pull it into the garage to change the oil and rotate the tires around.
This will happen between 7500 and 10,000 miles.
I always use full synthetic oil and have always done so.

I just passed 100,000 miles the other day.
It’s a 2017 model with a 5.0 engine.

I put more miles on my car than my wife does on her Nissan.
When I change my oil, I also check her car.
I change my oil nearly twice for every one time she gets hers changed.
Her car also gets the oil changed every 10,000 miles.

I have been changing oil every 10,000 miles for 20 years.
I have never had any problems with my oil.
I also buy well-known brands of oil, going for whatever is on sale.

I don’t find oil discussions helpful.
I don’t see the point in filter discussions.
I think talks about oil change mileage are pointless too.

My parents' new car reached 35,000 miles.
It needed a new engine.
They consistently had their oil changed at the dealership every 3,000 to 5,000 miles.
So, they got a new engine. Why did this happen? Who knows. If they followed my 10,000 mark that would be to blame right?

Not telling you to do it, Just what i do and sticking to it.

My diesel? Well Blackstone told me to keep going at 10,000 miles. But i won't .

 

maybe two. It about 50 dollars if you do it yourself and I think it costs 35 dollars??? Unless they get a stupidity discount.
Heck, some even just do the filter and top it off accordingly.

 

Yes, 5.0 V8. I took it to the dealer Monday and they reset the computer, changed oil and filter, and put a new dipstick in it. The service manager is a friend of my brothers and he said they have done this a lot, even to his son's 2019 F150, 5.0, V8. I guess time will tell.

 

Good job finding out the cost. How about sharing that info with those of us who are lazy?

 

Almost all newer direct injection engines are using oil. Besides the very low tension rings, direct injection and high EGR flow build up lots of carbon on the intake valves, piston tops, and really carbon up compression and oil rings.

Most engines with 50k+ miles will have oil rings that are carboned and usually stuck. This is where the oil consumption comes from.

The best preventive and cleanup after the fact without tearing into the engine is to use Vavoline Restore and Protect oil. It will actually clean up a lot of the carbon if used correctly, and it's also a really good oil.

This is an excellent video about the oil. There are lots of other videos on youtube about this oil.

 

I change every 4,000 miles for my 2.7 and my wife's I4 always and have had no leaks or carbon build up. 5w-30 Motor-craft.