Originally Posted by Pavement Tested

The 2 most likely causes: pinched o-ring on the filter housing cap (I've had that happen twice on my VW Jetta) or failed drain plug gasket. Both easily fixed.

Other less likely but not uncommon causes: cracked filter housing from over torquing cap, stripped and loose drain plug from over torquing the plug. Unfortunately, both also totally plausible coming from a dealership service department.

There's nothing wrong with your engine. The oil warning light would have come on well before damage was caused. They're designed that way. If there is an abundance of oil under the truck on the garage floor it leaked out while sitting there overnight or however long you parked it. If you had problems you would have gotten them before you parked it.

I wouldn't run it. I would look for the source of the leak but I typically do my own maintenance so I tend to inspect things after someone else has worked on one of my vehicles.

As for Germam cars, IMO and experience they are reliable for the first 4-5 years. Then the problems start. I've been lucky with my Jetta, it's almost 10 years old and I've had no significant issues. I also think people tend to not be as diligent on their maintenance after the first 2-3 years so things can start to fail.

I can't agree with you more that the dealership is SUPPOSED to be the place with the professional experts that know how to work on the vehicles they sell BUT the truth is dealerships tend to hire new mechanics fresh out of school who have been trained on how to plug in a diagnostics machine and press some buttons. They are not top of their class mechanics and they don't put an emphasis on how to actually do quality, detail oriented mechanics (i.e. wrench turning). They are paid as little as possible and only when they are actually working on something so the process then becomes quantity over quality, push as many jobs through as they can. The details suffer, things get missed and stuff like what your are experiencing happens. I'd wager that you'd be hard pressed to find a mechanic at a dealership with more than 5 years experience working there. If you did, they're probably the senior person on the shop floor.

I understand that not everyone has the skill, time or desire to do their own maintenance and that's ok. It's not for everyone. What I always recommend is finding a quality, small, independently operated shop that can handle your maintenance. They keep records and Toyota cannot void your warranty for having your maintenance done and documented somewhere else unless they can prove without a doubt it was done improperly. Improper maintenance happens far less at small shops because the mechanic working on your vehicle is often the business owner and cannot afford for the work to be done wrong. Their livelihood is at steak so they pay attention to what they're doing.

Some of this is assumption based but most of it is experience over a few decades and a lot of different makes/models of cars and trucks. I stopped going to dealerships for anything other than recalls or warranty work and even then, I try to avoid them.

Originally Posted by 4runneroffroad2020

The engine runs smooth... but i still dont trust it.
I dont want them to break down my engine and examine it, if they cant even do a simple oil change....

Originally Posted by 4runneroffroad2020

Actually no this was the better of the 3 dealers... i trusted these guys more
Am in Ontario

Originally Posted by 4runneroffroad2020

Actually no this was the better of the 3 dealers... i trusted these guys more
Am in Ontario

Originally Posted by 4runneroffroad2020

The engine runs smooth... but i still dont trust it.
I dont want them to break down my engine and examine it, if they cant even do a simple oil change....

Originally Posted by 4runneroffroad2020

I took my 2020 4runner TOR for its 32k KM maintenance to stay within warranty. I got home and the next day noticed a huge puddle of oil at the bottom of the garage. Looked at the skid plate and it's fully drenched and dripping in oil. Luckily i did not drive the car for long after oil change, waiting for the dealer to come fix it.

Did not get a CEL or any other warning... and refuse to turn the car on..... dealership is sending people to fix it..

Should i get a new engine? new car or extended warranty?

Simply unacceptable.

Originally Posted by Pavement Tested

The 2 most likely causes: pinched o-ring on the filter housing cap (I've had that happen twice on my VW Jetta) or failed drain plug gasket. Both easily fixed.

Other less likely but not uncommon causes: cracked filter housing from over torquing cap, stripped and loose drain plug from over torquing the plug. Unfortunately, both also totally plausible coming from a dealership service department.

There's nothing wrong with your engine. The oil warning light would have come on well before damage was caused. They're designed that way. If there is an abundance of oil under the truck on the garage floor it leaked out while sitting there overnight or however long you parked it. If you had problems you would have gotten them before you parked it.

I wouldn't run it. I would look for the source of the leak but I typically do my own maintenance so I tend to inspect things after someone else has worked on one of my vehicles.

As for Germam cars, IMO and experience they are reliable for the first 4-5 years. Then the problems start. I've been lucky with my Jetta, it's almost 10 years old and I've had no significant issues. I also think people tend to not be as diligent on their maintenance after the first 2-3 years so things can start to fail.

I can't agree with you more that the dealership is SUPPOSED to be the place with the professional experts that know how to work on the vehicles they sell BUT the truth is dealerships tend to hire new mechanics fresh out of school who have been trained on how to plug in a diagnostics machine and press some buttons. They are not top of their class mechanics and they don't put an emphasis on how to actually do quality, detail oriented mechanics (i.e. wrench turning). They are paid as little as possible and only when they are actually working on something so the process then becomes quantity over quality, push as many jobs through as they can. The details suffer, things get missed and stuff like what your are experiencing happens. I'd wager that you'd be hard pressed to find a mechanic at a dealership with more than 5 years experience working there. If you did, they're probably the senior person on the shop floor.

I understand that not everyone has the skill, time or desire to do their own maintenance and that's ok. It's not for everyone. What I always recommend is finding a quality, small, independently operated shop that can handle your maintenance. They keep records and Toyota cannot void your warranty for having your maintenance done and documented somewhere else unless they can prove without a doubt it was done improperly. Improper maintenance happens far less at small shops because the mechanic working on your vehicle is often the business owner and cannot afford for the work to be done wrong. Their livelihood is at steak so they pay attention to what they're doing.

Some of this is assumption based but most of it is experience over a few decades and a lot of different makes/models of cars and trucks. I stopped going to dealerships for anything other than recalls or warranty work and even then, I try to avoid them.

Originally Posted by Mr_Dobalina

Hijack here... I have a 2016VW Golf Sport wagon with 96K on it. It started burning oil. slowly at first and now over 6+ quarts between its 10K oil changes. Not a drop of oil in our driveway.

I changed the PVC valve about 20K miles ago.

I took it to the stealer and they could not find anything that would cause it to do this. It cost me $350 to diagnose. I know they looked hard because they are always trying to steal your money.

They basically threw up their hands and said at this point it would be more practical and cost efficient to replace the engine for 10K vs. continuing trying to troubleshoot.

Any ideas on what's going on here?