If you just read the Owner's Manual (yeah, I know, why would anyone do that?) you would find the 0-20 is the recommended viscosity. It is NOT required.

They cannot/will not deny warranty service because you used 0-30.

Engine knock, will warranty be void?
 

I've used 0w20 oil since I've bought the car, I understand what the manual says about what oil I need to run in the car, I simply decided to try out a different weight. Even if the manual doesn't say it is required, I'm sure Toyota will try to make it seem so just so they don't have to cover the engine, at least that's what I'm assuming they will do. Hopefully they will say what you're saying, that it is recommended and not required and the use of 0w30 oil won't cause any issues, and that is my worry and the whole point of this thread was to see if anyone had any experience dealing with Toyota with a similar situation or has any knowledge on this just so I can be properly prepared.

It is slightly less than 7500, I believe it was close to 6000 or so when I changed the oil last. The only thing is the oil will look pretty fresh so if I do decide to "loose" the records of the last oil change with 0w30 hopefully they won't find it to be too suspicious.

I guess I'm a ding dong that is illiterate and has never touched a wrench or done an oil change. Not to be rude, but I think I know what the manual says as I do have eyes. There's been some tests done on the use of 0w20 oil or at least on the Eneos sustina and it doesn't hold oil pressure well that is why I wanted to try out a different weight.

I know in other countries their manual may say to use a different weight so I'm fairly positive 0w20 isn't the only option, but I know how it goes when it comes to warranty and how dealers handle these sorts of claims. I'm sure if your engine blew and you had warranty, you would be paranoid over some stupid shit. I don't think anyone wants to be spending thousands of dollars repairing a car that is 3 years old or less because the dealer gives you a dumb excuse to get out of covering that repair, that's my dilemma and I just want to be prepared.

Why even waste your time typing a dumb comment if you have nothing to contribute.

If the dealer gives you ANY crap about using 0w30 just ask them to look up the Toyota 'required' oil in South Africa.
They use 5w30 partially because 0w20 is unavailable there.

If you read the one paragraph about engine oil in the manual that came with your twenty five thousand dollar piece of heavy machinery instead of typing that response you would know that Toyota and Subaru both recommend a higher weight oil such as 0W-30 or 5W-30 for cars that see heavier than normal usage or hot climates, such as commuting during a Chicago summer. Given that what you did is actually a suggested option in the cars manual I do not think it will cause you much hassle.

While that was an impressive tirade, text to speech is pretty good these days so forgive us if we're still not convinced of your literacy.

No, they are NOT going to do that! There is absolutely no requirement that you use 0-20.

Quote:
"....Oil viscosity (0W-20 is explained here as an example):
• The 0W in 0W-20 indicates the characteristic of the oil which allows
cold startability. Oils with a lower value before the W allow for easier
starting of the engine in cold weather.
• The 20 in 0W-20 indicates the viscosity characteristic of the oil when
the oil is at high temperature. An oil with a higher viscosity (one with a
higher value) may be better suited if the vehicle is operated at high
speeds, or under extreme load conditions....."

Engine knock, will warranty be void?
 

I understand that, and yes it does mention usage of different viscosity under heavy load or high speeds, but it does not list any weight specifically and I'm hoping they won't try to get "technical" about it. All I'm saying is, all it's life I used 0w20 and after the last oil change which I used 0w30 oil, the engine crapped out. 0w30 isn't a huge significant difference from a 0w20 but I'm assuming Toyota might try to use that as an excuse and also I don't want them to assume that I'm using 0w30 oil because I'm using the car under high speeds or in their interpretation that could be racing. It is summer but I know they won't be eager to cover the damage and I'm simply trying to look at all of this through their eyes.

Hopefully they won't use that against me. Either way I should find out soon. I've never had to deal with blown engines that have a chance to be covered under warranty so I just want to be sure. I do appreciate all the comments, forgive me for being paranoid. I just want to save myself a few thousand dollars.

You obviously have your mind made up that Toyota is going to deny your, in spite of all the documentation that they won't.

Since you have already made up your mind, I'm not sure why you bothered to post your concern here. Are you sure there aren't some other issues you have not shared with us?

It's not that I have my mind made up, I just don't want to get my hopes up. There have been no issues with the car nor I have don't anything to the car that would cause engine failure. I do some spirited driving here and there, but nothing to the extreme and as I mentioned I've tried my best to change my oil at due intervals, or actually before due intervals and I've tried my best to take care of the car. This will be my first experience dealing with such issue and warranty and hearing some peoples stories dealing with Toyota go me a bit worried.

I've swapped over to everything stock accept the wheels since I don't have the stock ones. So I just don't want them to see my car on advan wheels and try to add that up to the 0w30 oil and assume that I used the car for racing and that is the reason for the engine failure. I know they won't be able to prove racing as I wasn't anyways and I work way too much to have time for that, but I just don't want any crazy complications with this. Maybe I am being a bit too paranoid, but I just wanted to make sure that usage of 0w30 oil won't be a red flag to them especially how I mentioned that all of the sudden i switched to different viscosity and the engine died.

Sounds like you're over thinking it lol. Unless someone has went to the same dealer with the same problem as you, you won't get an exact answer. Just take it in and go from there

Sent from my VS986 using Tapatalk

You will be fine, the dealer is not out to just deny you. I went in with a noisy throwout bearing and dealer replaced without hesitation. Service centers like the work also. Find the right dealer ask around. There are some that would be happy to service your car.

DANG! ... @iamhubert ........ I sure hope you don't carry your paranoia into the dealership with you.

What you might do is to create a journal, with the dates of what you did, service wise with your car, along with the receipts for purchase of oil and filters.

This will make it easier for the dealership to document the service.

When you have the car taken in, I would just say something like ...... my car stopped running and I have no idea why. I would like it fixed.

If you are all defensive up front, mixed in with paranoia, they may suspect you aren't telling them the whole story.

Now, it's there move.

IF they ask about the different weights of oil you used, just be honest with them.

I have a feeling the dealership will do the right thing and fix your car, with no out of pocket cost to you.


humfrz