Toyota’s stance on using a heavier weight oil

[MKZman]

I see EV's as the distant future but what still needs to evolve is the energy generation and storage technology. It would take some time until EV cars can "recharge" in 10 minutes or less. Otherwise you would need energy stations 3x the size to allow a lot of vehicles to recharge when on long distance trips. Of course EVs will need to pay road taxes now being paid by gas/diesel.

 

[kschachn]

The specified bearing clearance in the Ford Coyote V8 can be as tight as 0.0005 inch per 1 inch of journal diameter per the factory service manual. That's about as tight as you can go on journal bearings without over heating and smoking them. And yet. Ford recommends using 5W÷50 in the Track Pack Coyote.

Tight bearings run fine on thicker oil, but loose bearing don't run well on thinner oil.

Some people seem to have a greatly exaggerated imagination over the size of oil molecules.

 

[PWMDMD]

Some people seem to have a greatly exaggerated imagination over the size of oil molecules.

By my estimate, it's a three to four orders of magnitude difference.

 

[JavierH19]

Some people seem to have a greatly exaggerated imagination over the size of oil molecules.

I blame all of those cheesy graphics and demonstrations that show an overexaggerated size difference for demonstration purposes when the real difference is almost nothing and it's more about uniformity with each. Though higher viscosity oils trend towards having larger angstrom sized molecules.

 

[PWMDMD]

I blame all of those cheesy graphics and demonstrations that show an overexaggerated size difference for demonstration purposes when the real difference is almost nothing and it's more about uniformity with each. Though higher viscosity oils trend towards having larger angstrom sized molecules.

Humans have a really hard time with understanding really small, really big, and really fast.

 

[tolian21]

“Tighter engine tolerances require thinner oil”. If this was true, how is it possible that Australian owner manual has oils 0w-16, 0w-20, and 5w-30 for the same engine? Where is the logic?

 

[edyvw]

What does this mean?

People like SUV’s as long as gas is cheap.

 

[tolian21]

People like SUV’s as long as gas is cheap.

Now is the best time to buy SUVs if you want one.

 

[edyvw]

Now is the best time to buy SUVs if you want one.

Possibly, although I think that greatly depends on models too. I highly doubt Toyota will have problem moving Grand Highlander hybrid. Honda and others at this point probably realized what mistake was not going hybrid on Pilot, or VW Atlas.

 

[ARCOgraphite]

Humans have a really hard time with understanding really small, really big, and really fast.

My Wife used to have a good grasp of this concept ...

 

[PWMDMD]

My Wife used to have a good grasp of this concept ...

It's not our fault. Humans evolved to understand a few slow moving things out on the African savanna and not 100M light years, the speed of light or the Plank length.

 

[ATex7239]

“Tighter engine tolerances require thinner oil”. If this was true, how is it possible that Australian owner manual has oils 0w-16, 0w-20, and 5w-30 for the same engine? Where is the logic?

Or what about when the manufacturers say you can temporarily use a higher grade? Do the tolerances temporarily increase? I guess maybe manufacturers are ok with temporary catastrophic damage.

 

[ATex7239]

People like SUV’s as long as gas is cheap.

It cost $60 to fill up the Sienna this weekend with 15 gallons. I would hate to see the monthly fuel bill for the his and hers truck/SUV crowd.

 

[Tdog02]

I never thought we would be discussing 0w20 as a thick alternative. (to 0w8) Do you think they will ever just settle on a few viscosities of oil to simplify the supply chain or is this driven by manufacturers and the gov?

 

[hemioiler]

“Tighter engine tolerances require thinner oil”. If this was true, how is it possible that Australian owner manual has oils 0w-16, 0w-20, and 5w-30 for the same engine? Where is the logic?

Everyone knows Australia works differently though, have you seen their toilets flush?

 

[tolian21]

Everyone knows Australia works differently though, have you seen their toilets flush?

Yes, I heard water spins in other direction in toilets and sinks, physics is different there

 

[PWMDMD]

Yes, I heard water spins in other direction in toilets and sinks, physics is different there

The physics is precisely the same there and everywhere in the universe.

 

[thastinger]

Just fill the crankcase with MMO, it is at least as thick as 0-8

 

[tired]

It would take some time until EV cars can "recharge" in 10 minutes or less.

Not if you're Chinese. They have recharging stations that recharge in 5 minutes. These are real stations people can use, unlike an Elon Musk tweet telling us that the tech is around the corner (spoiler: it isn't).

https://www.wsj.com/business/autos/...arging-america-is-trying-to-catch-up-ef7d707a

But we can't allow that technology here otherwise our OEMs would go bankrupt.

 

[Lawnman23]

Just fill the crankcase with MMO, it is at least as thick as 0-8

I discovered that MMO worked remarkable well as a power steering fluid in my '98 K1500. I had leaky lines and the reservoir ran dry one time. I didn't have any power steering fluid on hand but had a couple bottles of MMO on the shelf collecting dust so in it went. Ran that for awhile before finally sucking it all out and replacing it with Valvoline MaxLife power steering fluid. Between the two of those, no more leaks since. So win?