Toyota TuRD Hammer

[saturnfire]

Yikes. my Sequoia says 0w-20, but for the last ~10 years or so I have been running Mobil 1 5w-40 EU formula...or the 5w-30 in the winter.

 

[PhoenixTRX]

What a terrible name... Toyota actually offered a factory-backed supercharger kit for their late-model 5.7L V8 engines (mostly in the Tundra). It cost around $8,000 installed at the dealer and you kept your full factory warranty. It was seriously badass for its era, probably making it the quickest factory-optioned truck out there until the Ram TRX came along. They discontinued the option around 2016 when the 5.7L switched over to full flex-fuel capability. They should bring that engine back and put it in there HAMMER,, lol

Magnuson superchargers. We ran them on our work Tahoe/Suburban 'War Wagons', many over 100k miles without a single related issue - often at WFO in Phoenix heat!

Have the legendary 4.7L in our 2000 Toyota LC-100. It's a dog but with 119k original miles is barely broken in.... Meanwhile co-worker purchased a gently used ($ Paradise Valley, AZ) TRD Pro and at 6000 miles "BOOM!". Toyota purchased it back. He is now sticking with his 'built' LC-200 with the 5.7L.

 

[OnTheReel]

The story Toyota gave consumers about “dirty” engine builds in the US has been proven false. They have cleaned that facility & engines are still eating their crankshaft bearings. So, they went to a stronger crankshaft bearing material & it has helped, but not solved the “problem”.

A professional engine builder decided to tear down his personal Tundra engine after it started making noise. He did find lots of debris, as expected, but the passages feeding the crank bearings were relatively clear, but tiny! Why tiny? Because Toyota specifies 0-W20 oil, for fuel economy.

It appears that oil is simply too thin for the duty cycles that many owners require.

So why were the hybrids, built in Japan, impacted to a much lesser degree? Well, those engines have electric motor assist, meaning the ICE bearings see lower loads.

So why are Sequoias & GX-550 not as heavily impacted? Well, how often are those vehicles subjected to the loads seen by their pickup truck counterparts? Not as often.

You can’t run the necessary 0-W40 oil due to the narrow oil feeds. So, it’s a mess that will require an engine redesign & re-certification.

Elsewhere in the world Toyota graciously allows that motor to run on up to 10w30 (down to 0*F) and 5w30 without temperature restriction. 99.9% of what people say about modern engines “needing” low viscosity oils due to clearances or flow is complete nonsense and often contradicted by the manufacturer.

Everyone said the GM 6.2 “NEEDED” 0w20 to work properly until GM themselves pushed 0w40 onto it as a band-aid for poor surface finishes.

Unfortunately much like the 6.2, I think that Toyota has issues that no oil can truly fix and would just stay away.