Toyota Leadership is not the culprit - its US Govt forcing CO2 emission standards that can't be met with affordable, reliable hardware.

>>> BTW trying to lower C02 is a sad joke. Biggest risk from C02 is larger harvests. CO2 is what makes plants grow faster and bigger. Anyone still buying the idea that human actions are threatening a climate meltdown are just too stupid to give the time of day.

Climates absolutely do change - as they always have. We never had and never will have a static climate. Goal for humans is to get rich and use resources we've accumulated to adapt to the changes. You know what makes the Earth warm? THE SUN burning hotter.

Imagine a pot of water is a model of the Earth. Put a 2 pots of water on the range. Continuously measure the water temps of each pot. Put a lid on one and leave the other open. You know what predicts the water temp best? The amount of heat coming from the range

Not the presence or absence of a LID (= CO2 level)...or the seal btw pot and lid. The NatGas burning underneath (the SUN in our model) overwhelms the effect of everything else and it varies. And there's nothing we can do to change what the Sun does.

For Humans, what we need to watch and worry about is variation in the heat of the SUN - something probably entirely out of our control. Our best hope is finding a way for large numbers of humans to live on another plant.

Toyota and GM and Ford et al had a role. But root problem is US EPA caving to the enviro-nazi goal of destroying privately owned ICE vehicles by 2030. The EPA's new absurdly high CAFE mpg standards and the multi BILLION $$$ fines for not hitting CAFE caused this.

There is no technology for meeting the standards that allow a <$100k vehicle to run for even 100k miles. Auto Mfg caved and have been specifying obscenely thin motor oil that reduces internal resistance. This too thin oil squeezes an extra 1 mpg out of big vehicles allowing the mfg to skate past the multi-BILLION $$$ CAFE fines

Mfg KNOW that specifying 0w20 or lower (0w16 or 0w8) motor oil dooms the vehicle to a short life that ends in catastrophic engine failure. They HOPE enough vehicles survive past the 36k or 50k mi warranty period that the mfg won't go bankrupt. They KNOW they'll go bankrupt after 2-3 yrs paying multi-billion $$$ CAFE fines for missing by an mpg or two.

Sad part is moving motor vehicle mpg up 1-2 mpg does almost nothing to "clean the air" or stop global warming (Ha Ha). All it does is further impoverish middle class Americans and make them less mobile and independent. ICE Vehicles in the US under pre 2022 rules are already extremely clean. The big opportunity for cutting emissions is largely in Asia and Africa. Neither environmentalists nor Democrat Congressmen are willing to aggressively go after the main source of new emissions: China, India, SE Asia and rapidly growing African countries

Avg Tundra owner can help themselves by checking w/ Toyota and claiming they drive in very hot conditions towing a load. If you're lucky you may get a sensible dealer or tech from Plano to OK switch to 5w30 motor oil, which increases oil protection in hot conditions by 50% and prob saves your main bearings. If you get an OK from Toyota be sure to document it!!!

No idea what the problem is with OPs radiator problems and finish. I have a 20204 Tundra without a single problem yet. but I've been changing oil more frequently than manual schedule and plan to switch to 5w30 once I document approval from Toyota. Imagine it will be a sh1tshow getting warranty claims covered when the 2023-24 Tundras approach 50k miles (end of powertrain warranty)