May want to change the oil WAY before 10k miles on your new tacoma.

Sayre's Law: In any dispute the intensity of feeling is inversely proportional to the value of the issues at stake.

 

Bye, Julia @farmtacoma.

Who posts 1200 times on a forum in a month? Get a life!

 

Not anyone that owns a real farm... those people work their asses off

 

Thermal efficiency of 20% doesn't mean that there is 80% waste left in the engine that needs to be cleaned out. It means exactly the opposite… Of the heat (energy) created during the combustion process only 20% of it is being used to make power. The other 80% is mostly being wasted out the exhaust, expelled through the cooling system or other parasitic drains. An oil change won't "clean" this wasted energy out.

 

Page 11 reminder that this is about initial oil change.

That said let’s examine the fact that the OCI of 10k miles for subsequent oil changes is determined by Toyota engineers. At that point in time plenty of data is showing metal and silicone levels that are 20x lower.

So ... if the lab results on the initial fill at 3000 show 20x the metals that are found at the subsequent changes. you’d like to keep in it for the full 10k miles? Be my guest.

 

Please don’t twist my words with your internet searches. I did not say it was “left in the engine”
But rather It does and mostly is cleaned out, thanks to our brilliant engineers that have installed devices such as catalytic convertors, oxygen sensors, PVC, EGR, VV, electronic controls and such.

That is the reason we have cleaner air now, and also the reason we no longer have 3k severe engine oil change recommendations, but we still have 5k intervals.

But I respect your opinion also, and if you don’t wish to change your oil, don’t.
However, 5k change intervals and maybe even less by other makers by way of engine oil life sensors (GM) are still on the books for a reason, and that’s a fact.

 

Yes, right you are OP.

 

But how big are these particles? The oil filter will capture everything big enough to cause wear or damage. Nanometer sized particles of soft metals won’t do anything.

 

You can keep posting that picture it doesn't make you right. It doesn't need to be "cleaned out" in any form its a measure of what percentage is productive energy and what percentage is waste heat. The byproducts of the process are not measured in its efficiency.

 

I guess I misunderstood the bold. That 80% is heat thought not combustion byproducts that contaminate the oil... and other than the oil absorbing some of that heat it doesn't impact oil life.

 

I’ve heard for years that Toyota runs new engines for a certain amount of time in the factory to break them in, and then does the first oil change before it’s ever even installed into the vehicle. Even had a dealership tell me this. Anyone know this to be true, or is it a myth?

Either way, I’ll have the dealer do my first freebie oil change on my ‘21 at 5K, and then I’ll probably go with 10K intervals after that.

 

Absolutely. I recently asked my local service dept about DIY services (Mostly curious what their response would be) and they said as long as I can prove its been done they don't care. They even went as far as recommended I pick up a little note book where I can detail date, mileage and staple receipt to the page. I was quite surprised. My dealings with GM and FCA in the past lead me to believe they would have made an attempt to scare me into only using them as to not void my warranty lol.

 

And lets hope the dealership that took it in actually did the services due. I feel bad for the new owner who thinks they made a good buy. This is why I just went new on my 2020.

 

Honestly I dont know, but I'll opine that it sounds like urban legend. From a manufacturing standpoint, that is one hell of a waste stream for a company that pioneered six sigma.

 

Ridiculous. Maybe do a few during R&D, pre production. Doing this to every engine would be stupidity.

Like Dominos Pizza tasting each pie before its delivered.

 

They would very likely at least test fire and bring up to temp etc. They would be insane to not do this and send it out untested.

 

After new engines are assembled, they go thru a number tests, and if they pass, they are loaded up and sent to the assembly plant. This is all that I have been able to find in TOYOTA official publications.
As for engines being re-filled or broken in, there is no official publication that I have been able to find, just hear-say and anedactal stories.
That leads me to believe that the break-in of the engine is left up to the owner, and this is clearly stated and outlined in the owners manual.
This also leads me to believe that any small manufacturing particles may be gathered by the oil and may settle at the reservoir or pan bottom, if they are heavy enough. Those that are light enough to float around may not be harmful enough to cause any serious concerns.

That said, the factory(s) maybe willing to accept the risk a rare premature failure from a large enough particle because the cost of doing or recommending an early oil change does not warrant the cost.
And lets face it, even if there is a large enough particle to do some damage, what are the odds that it will settle to the bottom and not in a corner somewhere in the valve cover region where it may stay indefinitely before being dislodged if ever.

I chose to wait after break-in at around 1200k. But I maybe pissing in the wind, or I could get lucky as shown by some who did like me who got rid of some larger particles and may have avoided the hassles a warranty claim may bring.


And that of course is subject to much opinion and debate.
Moreover, I hope this is in the scope and purpose of this thread, if not please accept my apologies.










And that said, the question is, do you feel lucky?

 

I changed them as soon as I got it home. I've been changing them before AND after every trip I take with it. Air is cheap and you can never be too careful if you want your truck to last, I mean it's a toyota and they aren't known for lasting forever or anything, so you absolutely should not listen to their engineers.

 

The reason from what I’ve been told is to get the metal particles and contaminants that occur from breaking an engine in out of the oil and give it a fresh start for the buyer... thus the 1st oil change recommendation not until 10K under normal use. Again, I don’t know if it’s true or not, but I could see the company with the reputation for making the most reliable cars in the world doing this perhaps as a way to ensure they keep that rep. I dunno.

 

Generally but it depends what kind of farm. A dairy farm has work that has to be done every day. A crop farmer might have nothing to do this time of year other than maintain equipment that will be needed come spring.