After Owning 37 Trucks I Started Changing The Oil on My Toyota Tundra At These Mileages

I changed my oil every 3 months, I tried to follow Toyota recommendations, and I ruined a motor.

There are plenty of good synthetic oils that are lab-confirmed to resist more shear than any standard engine will generate, at well in excess of 10k miles. This is a proven fact, not an opinion. Changing oil based on time is even more unnecessary, and this isn't even controversial anymore. Lab tests have shown 5+ year old oil performs as good as new. I guess if you tell customers any of this you can't sell them an oil change though.

I agree that all vehicles should get oil changes other than what a
manufacturer suggests.
Yes the synthetic oils have improved and do not break down as easily as before.
But changing the oil as often as YOU see necessary you can’t go wrong. Specially if you’re pitting some kind of load on it. Be it excessive outside temp,towing,high compression motor. In the long run it’s cheap insurance.

I started working for Toyota in1975. At that time Toyota had a 500 mile oil change recommended. I don't remember when that changed , but I have followed that with every new car I have bought. l was a Toyota master technician with 17 years with the company. It has always worked for me.

This. The engines have a fundamental problem and the oil changes have nothing to do with it.

After turning wrenches for 56 years I have to say I disagree with you, however some of the designs on these newer engines are asking for failure like Ford with their siamesed cylinder walls and a slit in between for coolant when the compression pressure is 500 psi or so. The 400 small block Chevy had simmered cylinder walls and had problems in the 1960s and 70s. The new engineers either don't know about previous problems or more likely they want it to fail to make money off of us which in my opinion is crooked.

1000%. The less miles on an oil change is ALWAYS better. Thermal breakdown, water contamination through condensation, viscosity breakdown, etc. I ALWAYS change oil in every one of my vehicles at 3,000 w/ filter change, and I use off brand synthetic. Less than $23.00. I have never had any internal engine work on dozens of cars with 200k+ miles. It is probably overkill, but it is far cheaper than tearing into an engine!

Its also not worse, i have changed oil on many cars at 10- 17 k miles , i had ford focus that the last 200k milis i was charging oil at 30k miles, and drove the car to jankyard with 490k miles and good running original engine

First of all after rebuilding Ford,Chevy
Pontiac, Chrysler gas engines and many kinds of diesel engines I agree that changing the oil at 500 or less miles is a good idea. Not because of
Big but small metal particles from the break in process however this is not necessarily from tighter tolerances.
In the 30s to the 50s and even the 60s the machining processes were not quite as accurate and piston design and other engine parts improved. More engineering went into piston design than any other part. A piston when cold is oval shaped slightly so that when at operating temperature it fits the cylinder with the proper clearance.
The older the engine the less this is true hence the need for a break in period since the rings were not seated in the cylinder at first. So the sooner you get the metal particles out the better for the engine.
2 more things.
1) every time you run an engine hot the aluminum pistons over expand and get scrape marks from rubbing the cylinder walls, the oil cooks and the bearings don't get lubricated well.
2) Most people fire up their car and take off right away. I have timed at idle and higher Rpm how long it takes oil to get to the rocker arms on an OHV engine at idle. Up to 3 minutes. OHC is quicker. It's like getting out of bed and going to work without breakfast and coffee.
So when you crank up your vehicle, let it run a little bit with no load, if it runs hot shut it off. Don't try to make it home and don't run it low on oil. Some parts like pistons, rings and ohv camshaft are splash lubricated. May be enough oil for oil pump to lube bearings but not other parts depending on engine design.

He didn't say he waited 10,000 miles to change the oil... He said he changed it four tires in the first 10,000 miles (at 1k, 3k, 6k, and 10k)... then every 5,000 miles thereafter.
Sheesh... It's called English people...

I'll say it. I drive mostly highway miles and change oil about every 10k miles when the minder tells me it's due. 200k miles, engine still runs perfectly and is clean as it was when new inside. Cutting my service interval in half would just effectively cost me twice the money and time to service it.

I do 12k oil changes on my 09 Dodge Charger with the 5.7 hemi and no issues at 142k. I do use boutique synthetic that is made for me and my cars. Oil analysis done regularly with over 240k over two cars and no issues with lots of anti wear additives left me

Whatever you do don’t use synthetic as a break in oil

I got a 07 Trunda 342000 miles I have changed the oil at different mileage and a lot at 10000 miles but I have used Mobile 1 10w50 runs great and it's a 4.7 engine it's all in if it's made on a Monday or a Friday