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No speculating, like everyone on this thread I don't know exactly what Toyota does. I'm just pointing out that main bearing and connecting rod clearances use "select fit" manufacturing where every bearing journal diameter is measured optically and then the robot selects the correct thickness...

What is this based upon? When I worked in an engine plant it would have been trivially easy to adjust main bearing clearances and piston to bore clearances and connecting rod bearing clearances for a batch of engines headed for a specific region. What's not likely is any oil weught other than...

My 5th Gen SR5 has never let me down. Pic from the time that my left side wheels ended up in a freshly plowed field; I could reach down from the driver's seat and grab a handful of moist/loose dirt.

You're pretty far off. "Bean counters" are involved in setting the cost targets and the cost targets and also the customer satisfaction targets are based on the competition...with each new vehicle the engineers need to improve a little over the current competition. Once a program us approved you...

Idle vibration with a/c on is common in 4 cylinder vehicles because idle vibration is caused by engine torsional vibration which is 50% higher in a 4 cyl vs a 6 cylinder and a/c puts a big load on the engine and makes it work harder. The engine mounts that help isolate the vibration may well be...

All of the design validation (dyno and vehicle based durability testing) is done with factory-specified oil weight...it's the only oil that's been proven. Your oil performs many functions....splash lubrication, cooling, hydrodynamic lubrication for some bearings like main bearings and con rods...

Dude, just drive normally. Modern engines are not sensitive to break in procedure; that's why you've never heard of anyone having any sort of issue related to break-in. It's been a long time since I was a powertrain engineer but you can be sure that engines are designed to tolerate all the...

The comment about Can-Am Spyders makes me curious but that must be an oddball. In genersl it's not bad at all snd could even help long-term since it's helping you drive more gently. My wife's CRV has spent 10 years snd 100,000 miles in ECO mode. My phone's thoughts... Economy mode (or Eco...

Interesting. When I switched from those Dunlops to Defenders on my 5th Gen the Defenders were clearly much better for steering response, wet traction, dry traction and winter traction but they are also just a tiny bit stiffer than the Dunlops; for me the only thing the Dunlops did well was ride...

Those are the things the dealer would have asked and checked if they followed a diagnostic procedure vs a trial and error parts-swapping approach (where the customer and Toyota pay for dealer incompetence). Just measuring the frequency (at a couple different speeds) will tell you if it's related...

Yes...based on reviews. I was ready to buy a Passport Trailsport until I drove one. I hated the dynamics and it felt underpowered. No one complains about power (including towing) in new 4R. Plus the 4R has a personality. Passport is the logical choice...a nicely styled AWD minivan with massive...

My Civic Hybrid will run the engine to absorb excess electric power when the battery is 100% charged and regen braking is trying to feed more power to the battery. On long downhill grades you might get best fuel economy with minimum regen.

In my 5th Gen the rear seats can tumble forward so I left the 40 side of the 60/40 seat tumbled forward so the dog can jump first to the floor then to the seat.

That's kind of amazing. If you need a parking brake don't you need it all year? If you don't need it in winter, is it needed at all? Legal requirement?

Your powertrian should learn. If your vehicle is new I'd recommend that you don't try to keep it from stalling since that might interfere with learning. Typically, disconnecting and reconnecting the battery will reset the engine computer.

I doubt you'd notice any benefit from ANC for wet tire noise. ANC only works for very low frequencies in cars, for example at 50 hz the wavelength is 20 feet so the system can use a feedback microphone to cancel and it works even though the feedback microphone isn't close to your ear (like it is...

It depends on your reference point. Nobody is trading in their Lexus ES350 or Mercedes S class for a 4Runner to get better ride quality. Maybe the better question is how does it ride for a truck?

Most motorcycle owner's manuals recommend never using a high pressure wand because they can cause damage directly through high pressure or longer term by forcing water into places that would normally not have to deal with water like sensors, electrical connections, bearings, ...?