Why do Toyota engines consume oil ? And how to prevent it?

I worked for a car manufacturer for almost 3 decades. Every engineer from power train group I ever worked with was not favorable to long drain intervals. The environmental impact of waste oil and competitive pressures for low maintenance costs pushed their managers to do it. The reduced water jacket height in block and oil spray jets allowed oil to get to evaporating temp for fuel and moisture and better oil all got them to the best result. THEN reduced friction was the goal and ring width and spring force were one the first and easiest things to do to reduce effort needed to turn engine over. High output demands then got us turbochargers. The ring heat and more plastic like particle formation got the ring groove sludge build that sticks rings. The basic indisputable fact is that ANY oil gains contaminants with engine use hours. Dirt particles smaller than air filter capture size and fuel that is not combusted that is on cylinder walls and is scraped down by rings will accrue in the oil. Synthetic oil is better at tolerating this but it is still oil and still accrues the same stuff. Superfine bypass flow oil filtering can get the particles but still you have the other dilutes building up. As stated, ONLY MORE FREQUENT OIL SERVICE fixes this. So you buy a prepaid maintenance plan and it only covers the standard schedule? Find a trusted quick lube and get the base service oil change. If you keep the car it will pay it back. Even without ring concerns the overwhelming bulk of vehicles have timing chains and variable cam timing. Those c omponents suffer from the dilutes in oil causing wear not seen in 150K mile engines with more oil changes done. Camshaft in hemis, tappets in GM V8s, and cam phasers in some Fords? Not seen much at all when the oil changes were done at 5K interval. Listen to Car Care Nut

First time i ever heard an Automotive technician on YouTube say : I LOVE YOU ALL AND I CARE ABOUT YOU” this man has a good heart ontop of being an excellent technician with excellent advice. I could envision this guy being a teacher or professor and doing much good in this World. 👍🙏😃

He is 100% correct! I work at a service department at a Toyota dealership. Folks just change your oil and filter every 3k-5k or every 6 months and your good.

My Toyota dealer refused to change the oil at the first 3000 miles. Now I get cards in the mail saying- WE Miss You.

Ex BMW master tech for 17years. Everything this man says is SPOT ON, imho. I would STRONGLY suggest following his advice on this matter!

I have been an auto technician for 47 years. I have been telling people for years to change their oil and filters more often than the factory recommends. All the engine work I have done( like rings and bearings) were because of not changing the oil enough. Can't stress this enough.

Have 2016 Gen 3 TRD Offroad Tacoma ..... change every 3000 since new ...... NO OIL CONSUMPTION !!!!!!!!!..... 116,000 miles and counting ....... you are a treasure, Sir !!!!! Thank you for what you do !!!! 🙂

Salut je m'appelle Steven je suis moi-même mécanicien et je suis français et je tenais à t'applaudir pour la qualité de tes vidéos qui sont vraiment impressionnante. Du pur bonheur

I've had my car for 12 years from new. I'd always changed the oil and filter every 5000 miles with mobil 3000 and OEM filter. The car now has 100000 miles on it, I just inspected the cylinders with an endoscope. Still has the cross hatching and very few faint vertical scoring. Listen to the guy, he knows what he's talking about.

Yep, I live in Canada. My father was a mechanic in the 60s. He taught me to change oil just before the snow comes and just after it leaves. My 06 Tacoma is still going strong. Thanks for confirming what my father taught me.

Wow this man is a gem to all of us. I’ve been doing a lot of research, and I have a Jeep, not Toyota and the story seems to be the same there. Some of the problems they are having with the valves and camshaft stuff is because of insufficient maintenance, ie oil changes. The more research I do the more I am convinced that it is imperative we half the intervals from these manufacturers from 10,009 down to 5009. 4000 even… if you drive in extreme conditions. Thank you for your honesty… I know its kind of a conflict of interest, being that you work for Toyota, but this is stuff that is people need to know.

I watch your vids religiously and I’m glued there until it’s done. Thanks mate you help so many people. Much appreciated 👌

Quote from Scotty Kilmer below says it all:. "Oil is cheap; engines are expensive!" Sound and solid advice in this video. Well done!

I’m a mechanic and this guy speaks 100% truth

Possibly one of the best vids on oil maintenance out there. That 1 year minimum might be in the owners manual, but for low miles type rides, it ought to be noted as the most important: chemistry never sleeps, and blow-by [however little] just degrades oil over time. Nothing stops it really, and the grocery getters that never ever get up to temp are the most vulnerable.

I have worked on cars since 1980 and Ahmed is the best I have ever seen!! I hate going 5k on an oil change! That;s why I like to go 4K!! Mostly highway too!! I finally have a Toyota a new 2024 Rav 4 gas awd and plan on listening even more intently now! BTW this is my 2nd time watching this :) TYVM we are Blessed to have such honest people!!! God Bless!!

One can tell that this guy is a great mechanic and it's telling the truth by how frustrated he is.

Hello, I have been a Toyota Master Technician for about 30 years. I own a 2005 Toyota 4runner limited 4.7. I change the oil every 3000 miles. I now have 300,000 miles on it and it still running strong! I keep telling my customers the same things you are talking about and I wanted to say great job on the video 👍

My 2006 corolla has 400,000 miles on it. It uses very little oil, maybe a quart every 10,000 miles. Now I'm retired, more short distance travel. I will follow your advice and change my full synthetic oil every 6 months. Thank you for a great video.

I think I did it once with my 4runner but I do mine every 5k. Even when done at the dealer oil changes are not that expensive. Set the appointment, in and out in about 30 minutes or so. I rather pay for the changes and take time out my schedule than howling at moon and barking at the screen because now the service rep has called me to discuss the purchase of a short block. Bump that noise, frequent oil changes for the win Alex. Just like the olden days.