Switching to 5w30?

Gear oil I believe?

 

Gang, it's not like transmission with lifetime fluid. Manual says 5k for regular engine oil or 10k for synthetic. This sounds like a joke more so than a serious reply.

I've heard of people never changing engine oil, but that can't be very good for everything inside the engine.

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Mixing oil should be totally fine, even different brands, given they're all API certified.

 

Mine came with oil already in it.

Good enough for me.

 

LOL

 

Walmart July, 2023 5 qts of Mobile 1 "Extended Performance" $29.

 

$25 Mobil 1 High Mileage Full Synthetic Motor Oil 0W-20, 5 Quart, Gray

https://www.amazon.com/gp/aw/d/B07B5XYD7K?ref=ppx_pop_mob_b_asin_title

 

That's about what it cost me!

 

So you all change oil, but you leave the same engine in there? Every time? I have better piece of mind with a fresh engine every 5k. Some go 10k between engines. But The Car Care Nut said that’s not a good idea, so new engine every 5k for me.

 

no that crap is for domestics, you bought a refined vehicle

 

God I love oil threads.

 

These and transmission cooler threads?

 

Oh man I haven't seen a good confused male cooler thread in a minute

 

For me, it's oil threads and then "premium" fuel threads/conversations are a close second.
The trans cooler topic is relatively new and I don't follow it. Maybe I'll start watching at some point. I hear it's pretty good.
But oil? Oil is timeless.

 

Engine oil engine oil, which one should it be?

Engine oil engine oil, it must be 5w3.

It slips and it slides when it’s hot outside a thicker vis-cos-ity.

0w-20, so good when it’s freezing.

0w-20, to keep that *%*% from seizing.

What you choose likely doesn’t matter one iota.

When SHTF, just remember, it’s a Toyota….

 

Yeah but which oil is best for payload?

 

50w100

 

I was thinking more like 0w0.5. Gotta save it for my 5th wheel hitch weight

 

What's the biggest oil I can run on stock suspension without rubbing?

 

I've noticed the transmission loves to keep the revs down in this truck. Tow haul and S4 for me.

This line in the owners manual was the reason for my 5w30 switch:

The 20 in 0W-20 indicates the viscosity characteristic of the oil when the oil is at high temperature. An oil with a higher viscosity (one with a higher value) may be better suited if the vehicle is operated at high speeds, or under extreme load conditions.

 

I use 5W-30 here in southern AZ where it's regularly over 100 ambient, regularly well over 100, during the summer.

 

Interesting, my 2021 manual states the same thing. “Extreme load conditions” is fairly ambiguous, I wonder if Toyota has anything written down elaborating on what the manufacturer would consider “extreme”.

 

I’ll betcha a supercharger qualifies as extreme load. Hence 5w-30

 

Yours is 2020 model. Do you have transmission cooler added? I'm sure it has to work a lot harder vs NA engine, hence higher temps of the fluid.

 

I wouldn’t hesitate to agree with you there.

 

I added the trans cooler

 

I'd rather not.

 

It’s complicated. It thinks it has a thermostat, however, it’s bypassed.

sooooo….. I don’t want to come across as intolerant.

 

I'm considering pulling a 7000# trailer over mountain passes with a truck rated for 9800# extreme.

 

I'll just use 0W-50. That should cover everything.