A Toyota Master Diagnostic Techncian discusses Why do Toyota engines consume oil or burn it. And ways you can prevent it from happening to your Toyota
In this video I go over a very hot topic, Toyota engines burning oil? Not only the 2AZ-FE engine that was part of a customer support program and was fixed because of a problem. But the newer engines are also using oil like the 2.5L 2AR-FE , 2.7 1AR-FE and the 2ZR-FXE 1.8 engine in the toyota prius.
I will go over what is causing all this mess and you guessed it. Low tention piston rings. This is a change that took place in modern engines that makes them very tempermantal to oil maintenace.
The No.1 cause of oil burning problems in modern engines not just with Toyota but with everyone is low tension piston rings sticking or seizing because of bad maintenance habits.
Toyota’s 10,000 mile oil change or 1 year is great to reduce the costs of ownership. However you must adhere to the strict guidelines for this oil change. There are many condtions which would change your car to Special operating conditinos which would then call for a 5,000 mile oil change or 6 months whichever comes first.
I wish all my viewers and everyone who watches this video to know about this and understand that going into the grey area of special operating conditions is not worth it. Toyota overall maintenance costs are very low even with the 5,000 mile or 6 month oil changes. Why push your engine to the edge or keep wondering if you operated your car in special conditions, Just do your oil change every 5000 mile or 6 month and wonder no more.
Questions? Comment or email please note that it takes me sometime to get back to you via email but I always will in the end.
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0:00 Intro
0:48 What is it?
2:44 Why do they burn oil?
5:30 Stage 1
7:12 Stage 2
8:38 Stage 3
10:28 How to prevent it?
19:19 Possible fixes?
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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
Nowadays which is best car to buy?
I appreciate your videos. You mentioned checking oil. I was told by a dealer service manager that I needed to park on level ground and let my truck sit over night and then check the oil. Is it really necessary to let it sit so long? I live on a hill so it's more convient at a gas station but I can't let it sit over night.
When I fill my oil, I don’t fill it to the max. At 500 miles before I plan to do the oil change, I top off the oil with Marvel Mystery Oil. Everything I can see in the engine always looks clean. This seems to work.
Excellent educational video. Thank you for sharing.
great info , we don’t have to be lazy and change the oil
If you're to lazy to get that routine oil change, go get a Tesla… :0) no oil change necessary.
Thanks for your videos. I have a Corolla Ceres which is over 25 years old. I do mainly short trips and change my oil every 4000km. My engine burns less than 1/2 a litre between oil change.
@ 9:53 misfire, you mean blow by?
What about the 2.0-litre VVT-i 1AZ-FSE 108 kW (145 hp) (147 bhp) which is used in Toyota Avensis 2003-2008? in Europe and other places? It does burn alot right?