Engine failure

It's the same engine that is/was used south of the border and the owners manual specifies a multitude of viscosities. Earlier USA owners manuals had the same entry.

 

I predict there is a defect inside the oil passages in the blocks, and oil starvation is causing these issues.

Probably not getting the blocks cleaned properly after machining.

 

"The V35A-FTS is a 3.5-liter twin-turbocharged V6 gasoline engine debuted in 2017 with the fifth-generation Lexus LS 500"

Today is 2023.

 

I'm just saying what I noticed in my Tundra. I'm not a fun of watery oil in engine, but burning oil in a new engine is bad, so it is back to Toyota 0w20.

 

I know that, but its not exactly the same engine

 

Maybe same family, but I think they tweak the bore or stroke to give it more torque

 

ya, somewhere around here are the details on the differences, but I don't care enough to search for it at the moment. But like I said, they didnt just drop that exact motor in, its different in some ways

it really doesnt matter anyways, either you like the new one you don't, either way is fine

 

The 5.7 was new in 07. This engine, according to all the 3rd gen fans has been in use in the Lexus SUV line up for a couple of years. So it isn't new. New to the Tundra line, yes, but not a totally new engine like the 5.7 was.

 

But Lexus owners reported the same problem.

 

ok, I get it. I never really thought it was the same exact engine as the Lexus

 

Bore and stroke are identical. The Tundra version is just detuned, and cheapened.

Here all the details you could ever want to know:

https://toyota-club.net/files/faq/19-09-10_faq_df_v6_eng.htm

Type ‘17 denotes the engine in the LS500.

Type ‘21 denotes the engine in truck applications.

 

Not the exact same engine in terms of exact. A few differences but pretty much 99% the same.

 

don't know what to tell you, just was saying it is not the same thing IMO when I watched the guy go through the differences. There was a video here at one time

at the end of the day it doesnt matter anyways I guess.

 

thanks for the reference docs, Ill take a pass through when I have some time

 

I have seen that same article before. All I can say is ,WOW. So much for K.I.S.S

 

I would love to understand what the issue is but this sounds possible. Metal shavings plugging up the oil pickup. Something is contaminating the oil and blocking the oil from getting around.

 

That would be my guess. Metal shavings in a corner of an oil passage. Everything is fine until one moment they get jostled loose, and find their way to a main bearing. A guy might have that issue and the shavings are in a spot where they make it to the pan or oil filter first and get caught, engine will never show any damage at all. Or you get unlucky and the shavings are in a spot where the first stop is a main bearing… and now your engine is garbage.

 

If you're burning oil, it's not a viscosity issue.

 

I'll update everyone once I hear back from the dealer. I hope everyone knows i'm not bashing Toyota for this and I understand that crap happens. With so many of these happening though it seems to be more than just a fluke in my truck which concerns me with the next motor. Maybe it won't happen until 60k? I mean until we understand why this is happening why is this motor any different than the other one that only lasted 10k? Nobody wants to be stranded and I know Toyota is investigating but how would the fix help me with my new engine that wont have the fix? Only time will tell I guess and we will see what the dealer says. I also have noticed all of the pages online and dealers are listing at 3.4L Twin turbos now instead of 3.5L since displacement is like 3,445 and they have been rounding up instead of down.

 

Oh, it was. No burning with the thinner oil back in sump.

Same sh*t happened to Volvo when they decided to make an old bulletproof 5 banger a little bit easier on fuel. New low tension rings in, oil consumption out. The recall action was to replace oil rings with the old, stiff ones.

 

Tell the dealer put a is500 f sport engine in it, it’ll last a long time

 

I've read around and one dealer put a 32k price on engine replacement in these new tundra's. I would put something else in there for that price if I had the choice and probably save some money.

 

After seeing the article you posted and all the passages, solenoids, springs, balls, etc, that that engine has, it's a big possibility. They over complicated that engine. A lot of manuf are getting to complicated with what was a simple design.

 

You heard right. But the insurance ended up negotiating a lot lower price on the one that floating around here.

 

How many has this happened to that its "so many?"

 

wouldn't this be warranty?

 

I do not have that answer. I feel like its more common than it should be. I also feel like if I google 2022 tundra blown motor it pops up way more than it should or we'd like to see.

 

One of them recently was due to water ingestion I think so warranty wouldn't cover it. Maybe insurance looked at it like flood damage.

 

At lease 8 cases were documented right here at tundras: https://www.tundras.com/threads/3-4-i-force-engine-failures.121107/ within less than 2 years.

 

Wait a year and traded for the new Tacoma trail hunter