My 2K impressions, reliability prospects…

So I hit close to 2k miles today and wanted to share some impressions that some of you may be wondering about, only a few main points: engine and mpg.

1. Powertrain
I am blown away with this engine. It has loads of torque, revs happily up to its redline, and has minimal lag in normal and sport modes.

Besides the above, one of my worries about forced induction is long term reliability of the engine. I have owned a few turbo cars and still own one, 2019 Porsche Cayenne. I have noticed that oil temps in these turbo cars rises significantly when put under load and high revs. My late ecodiesel RAM would get oil temps in 260s on a moderated grade freeway climb for 5 minutes. Same is true of my Cayenne, although not as bad, gets to 235s.

I wanted to see what the oil temps were with this Tundra under the same circumstances. I connected my obd ii reader and monitored the temps. Same situation, oversized heavy tires of mine, 4500 RPM, oil temps 102-103C (215-217F). I’m so impressed. My naturally aspirated brand new Subaru BRZ gets to 240 when I raise rpms to 4500. This is truly epic work by Toyota, managing cooling. You can abuse this engine, but no worries about temps, hence longevity. In this particular way very similar to my GT3.

2. Mileage
I have put some 34.1 inch oversized heavy tires, 23 pounds heavier at each wheel to be exact. My highway mileage is 19-20 corrected mpg and about 16mpg combined. Here is a mpg history plot from the car, much more informative than a snapshot. Of course, this is the uncorrected mpg, need to add .75 to 1mpg on top.

Forgot to mention, this is in Eco mode, and I do have a bit of a lead foot. I found I get better mpg with cruise control.

 

Thanks for your insight OP, I always like to hear the positives of this truck. My Platinum is supposed to be built sometime this next week and I can't wait. Toyota has not let me down in 31 years of ownership (11 different vehicles). I understand peoples frustration with their turbo issue, but my history with toyota makes me believe they will get it right. Call me a fanboy if you want but I will be on board until toyota gives me a sustained reason to try another manufacturer.

 

Tks for the post. I think it’s great to have people check into the finer workings a bit, like turbo cooling & oil temps. It does look like they put effort into cooling the turbos. can’t wait for mine to arrive!

 

I am doing a Miami to Orlando trip tomorrow. If I recall my OBD reading on oil temp was around the same as you. I have read that, as far as the 2.5 gen is concerned, there is no real temp reading, just a guesstimation. Wonder if it the same for the 3rd gen. I also have BF 33" tires. I will see what I get. Did you do a trans temp? check. Toyota did add a so called trans cooler to the 3rd gen and no reports on the trans temp yet that I have seen. I did do a trans cooler and I can say that from not having one (200*-240*) to having one (180*-190), it makes a difference. I am also kinda worried about turbos because my wifes 20 Lexus NX300 is also turbocharged. Granted she won't have long enough to worry about it but still in the bad of my mind.

 

I think the readings are a stream of exact parameters, not ballpark. There are numerous parameters one can monitor real time with my iCarsoft. I will try to see if transmission temp is one of those.

 

Ok, so I just drove to Orlando and the whole way 70-80mph oil temp 186-192*. Trans temp 189-192*.

 

That is really nice!
If you can, next time also check when the engine is under sustained load at high RPM for at least 5 minutes. This kind of scenarios, climbing a moderate to steep highway grade or towing, bring the oil temps up.

3rd Gen does not have a transmission temp gauge, and I could not find it in my OBD II scanner when streaming live data.

 

Florida is kinda flat, but the 192* for the oil temp was when I was doing a bit of 3/4 to full throttle passing. Weird you couldn’t find the trans temp. This how it shows for me on my scanner. A/T oil temp 1 and number to is for the torque converter temp.

 

Do you have the PID for Toyota Lexus Scion?

 

Do any of your OBDII scanners have the ability to monitor intake manifold air temperatures?

I am also curious to see how effective the air to liquid after cooling is under a variety of conditions. Heat shielding air boxes, air inlet pipes, etc might be relatively inexpensive ways to pick up “free” power by keeping inlet air temperatures down thus increasing air density.

 

Great info, thanks for posting your insights.

 

I used to have a Silverado SS with a Magnuson S/C. I can tell you that when you start stepping on it, the heat soak is there and not going away till you stop stepping on it. I made my S/C more efficient by adding a second heat exchanger with a fan but that only helped so much. The will over come just about any normal mods. A chiller system works best but expensive. Not to mention those few extra ponies on a 6k truck will hardly be noticed, talking about 5hp max.

 

My OBD 2 reader is rudimentary, it does not show that information. I would be curious also if there is a way to see that.

 

What obd reader are you using? Are you reading that on your phone?

 

That’s an inherent problem with superchargers. Tougher to effectively after cool the charge air compared to a turbocharged application. Not really concerned with the few extra Freedom Eagles more curious about the ability to reduce heat soak when the truck is being worked.

Granted the products I’ve seen are being hawked by for profit businesses selling heat shielding, but some of the results on intake air temps with simple heat shielding on air boxes, air intake pipes, boost pipes etc is intriguing.

 

I have the OBD Link MX+. And yes it’s off my phone.

I managed to push it some, 80-90 for about 30 miles. Oil got up to 194 and settles back down to 190 with in 5 or so miles. Trans also went to around 192-3 and settles back to 189-190.

 

I wanted to update.
I bought Veepeak OBD2 wireless scanner from Amazon, $33. Also Car Scanner Pro from the App Store, $7.

This thing can read everything, including intake temps, pressures, charged air cooler temps. See attached. These are few of the live parameters I chose.

 

According to the below video, it appears the 2022 has a separate cooling loop for the air/water intercoolers and turbos. It is controlled by an electric coolant pump that can keep the coolant circulating “if needed” after the motor is turned off. That bodes well for reliability and not cooking the turbo bearings and seals with a hot shutdown if true. A built-in turbo timer of sorts.



EDIT: Roughly 8:45 in the video is the turbo/intercooler cooling loop overview.

 

Good to hear …instead of thread after thread of incessant bitching.

 

Yes it does! It is a completely separate air to water intercooler systems I think. That and tricks in oiling is the reason this turbo engine runs so cool when under load.

A lot of Toyota owners may see it a given, but when you try to extract as much horsepower as possible and push the limits, heat becomes a major factor. It is simple: less heat translates to more reliability! I am very pleased and surprised how they can keep this beast of an engine so cool with those turbos.

I have mentioned before, my new 22’ naturally aspirated BRZ heats up like hell on the race track. My turbo base Cayenne heats up to above 235F when pushed hard as well.

I tried pushing this engine, with 100% sustained load on a steep grade and high RPMs. Highest temps I saw was 222F. I think this bodes well in long term reliability. Again, this engine is the same that we find in the new Toyota icon—the land cruiser. Toyota would not have jeopardized their name by coming out with a half-baked powertrain in a vehicle that exemplifies what reliability should be.

 

All the bitching about the size of the grille. Trying to tell the haters it has to be big for adequate air flow for all the heat exchangers, and getting “but new truck is teh so ugly, and it ain’t got no V8 an it’s a commie conspiracy to take muh jerb!” counter arguments was fun.

The same crowd will continue making the same arguments.

 

I have been part of the same crowd many times, owning a certain generation of a car, then a new one comes out. All the old gen owners, like myself, find all the faults with the new gen car. It is ugly, the engine is not pure, the brand is not the same, etc, etc. My experience owning a few generations of Porsche 911 GT3s. At the end of the day, I have bought the new one, and have not looked back. In the case of the GT3, the progress had been incremental; in case of the Tundra, it is revolutionary. Just need time.

 

Yes, completely separate. Has its own water pump as well as its own radiators. Fluid flows through the intercoolers, then to the turbos, then to the rads. To your point about "tricks in oiling" I read somewhere (haven't been able to confirm if true) they use oil sprayers to spray the underside of the pistons which helps keep temps down, a trick they learned during their most recent stint in Formula1.

No doubt. I guess I'm one of the few that loves the look of the new front end/grille.

 

But they can't terk er jerbs! [/southpark]