The engine produces higher wear metals and fuel dilution during break in that are best removed for the longevity of the engine. The sample was from the oil stream as it was being drained for the change. The new oil is superior anyway so you aren't losing anything. All it amounts to is a little money and your time to make sure your engine runs well for years to come.
except the oil analysis doesn't show any unusually high wear metals, even at such a low mileage change. any truly harmful metals would be caught in the filter anyway
You're right, I do sleep better knowing I got all the silicon out, the copper from the EGR cooler or wherever it came from, got a clean filter, and restored the proper viscosity oil to the engine.On the turbo its mostly extra copper.
The non-turbo its Iron and copper.
Silicone for both from the factory sealant/gaskets.
You are right its not big of a deal and not needed to change that early. Its just some of us sleep
better at night
Like @dunhillmc said, any truly harmful metals would be caught in the filter anyway. Comparing to @ch3no2’s UOA which doesn’t show any significant fuel dilution issue on his new 2.5T, your engine could have some fuel dilution issues.
Low viscosity factory oil in your 2.5T could be the “break-in” oil Mazda designed to put in for the new engines. You wouldn’t think Mazda would put in “bad oil” in its new engines to ruin the engine?
And Toyota has been using 0W-16 oil with 10,000-mile OCI and we haven’t heard too many oil related engine failures, have we?
Low viscosity factory oil in your 2.5T could be the “break-in” oil Mazda designed to put in for the new engines. You wouldn’t think Mazda would put in “bad oil” in its new engines to ruin the engine?
And Toyota has been using 0W-16 oil with 10,000-mile OCI and we haven’t heard too many oil related engine failures, have we?
This isn’t my personal experience by owning a Toyota Yaris iA and a Toyota Corolla Hatchback my daughter owns. Toyota has free 2-year maintenance program for every new car. The dealer won’t change the oil for you unless the car has reached 10,000 miles (mileage) or 12 months (time). In fact, my friend went in for the free oil change at 7.500 miles but only got turned away and had to wait for until 10,000 miles.
Mazda did not use any special high moly oil in my engine. See my OA above. They used one that has higher calcium and lower viscosity--the opposite of what's best for my engine.
No. There is no way I am running the factory oil with this UOA in this car for 5k miles. It's supposed to use 5W-30. The factory oil was getting close to 0W-20 at only 1200 miles. And very likely with a lower flashpoint too. I put in a better oil--clean oil--and that gives me peace of mind.
We have no evidence that there is "break-in oil" from Mazda.
From all of the research I've done, it's Idemitsu Synthetic.
youtu.be
amen.
If this guy is correct, millions of Toyota owners are screwed!AVOID the ONE MISTAKE Almost EVERYONE Makes With A Brand New Car
Do you own a new car? Just changing your motor oil after the first 500 miles makes a huge difference in the amount of wear that occurs during that break-in p...
By the way, these cars come with thinner oils for better fuel economy test results, not because it's best for your engine.
Oh and multi-million car owners in Europe and Asia are screwed too.
No one ever said you're "screwed" if you don't do an early 1st oil change. Please don't blow this out of proportion. This is for people who really care about doing what's best for their engine and going the extra mile.
Yes, I know and I said it too. You seem to indicate Mazda put in bad oil in its new engines and hope for the best?
Based on several new 2.5T UOAs Mazda seems to put thinner oil to the new 2.5T from factory. It won’t surprise me as the new engine is tighter, and thinner oil is needed.
Yes, but we have no evidence that Mazda doesn’t use “break-in” oil either. I’d consider high moly oil on the 2.5L NA is a special “break-in” oil like Honda does. Apparently Mazda intentionally uses thinner oil from factory on the 2.5T which I’d consider it’s a “break-in” oil too.
To reiterate, our oil analyses used different methods. Oil Analyzers uses a more accurate method to measure fuel dilution than Blackstone, which is one of the reasons I chose them. Because of this, we can't directly compare the results.
Fuel economy test results. Many lubricating fluids are getting thinner for this same reason, including the transmission fluid which is new for 2024. Toyota ships their cars with 0W-8 now. It's not a "break-in oil", it's the oil they run the entire life of the car. You just can't buy it here in the states, so 0W-16 is used (and I'd recommend that anyway for better engine protection).
I’m talking about the guy in the YouTube.
The oil related engine problem is the least we should concern if you change the oil regularly. There’re too many things could happen with the complexity of the modern engine. For your 2.5T I’d worry about the cracked cylinder head issue which is a major design flaw even though Mazda claimed the cylinder head and exhaust manifold gasket have been modified. It took about 4 years to expose this problem, I’d wait at least another 4 years to prove the fix is legit.
