5W20
0W20
5W30
0W30

ALL perfectly fine to run, whatever you choose just make sure you change it on time and dont think too much about it.

Thanks, everyone, for the input (sarcastically funny or not). 👍

I'm no newbie to oil and my '19 is my 4th T4R (still have my '08) as well as having owned 3 other Toyotas, all seeing no less than 200,000 miles. And, yes, I'm ashamed to say I have owned and still own (2) domestics. Of the 4 vehicles currently on-hand, OEM would have me stock 3 different oil viscosity.

Looks like this upcoming oil change on my '19 will be 5W-30.

Thanks again. 👍

15w-40 for the win!

(Summer of course)

OK, being at least half serious here...
Since the new Lexus LFA uses 0W40 and my wife's Benz use 0W-40 M1
Any reason this would be bad for the 1GR - FE engine? Other than potential shear strength issues??
That way I can stock only one oil...lol

shouldn't be. as most 0W-40's go, M1 starts out closer to like a....35 weight, really. shears down initially from a 40 to a high 30 range but then settles and holds there very well with its strong High Temp High Shear rating. its cheap, easy to find, and has a very effective additive package for long drain intervals. hard to go wrong.

i will likely be doing exactly what you describe. my other vehicle runs 0W-40's and living in a hot SE climate, along with towing, occassional heavy loading, off road use, and high speed cruising (all fall under severe use in the manual) makes it seem like it would be a perfectly fine fit for our 4runner, and i could just keep 1 kind of oil on the shelf anyway.

Nice to hear! Thank you!
I was not sure on the shear rating, but you have convinced me to give this a try. With 4.88's, almost 6000 pounds loaded up, and living in TX, I really like the idea of 40 for summers...
AMLOR

for heavy duty use, a HTHS rating of 3.5 or higher is a general indication it'll hold its grade under shear stress. M1 0W-40 is at a 3.6. additionally, it has some very impressive manufacturer certifications for wear control under extreme use, particularly from the German car makes which have some of the most stringent wear tests and physical inspection.

all this to say its a good fit for stressing an engine under load, at high RPM, in high ambient heat. i think it'll do the job great for you. at the very least, as mentioned, it's the "thinnest" off the shelf 40 i know of if it helps put your mind at ease about jumping up that high in viscosity.

Interesting that you should mention "German"...this 0W-40 M1 is the factory fill and what the dealer uses for my wife's E350 4matic. 3.5 Liter, 330 HP, aluminum block and heads v6.
Great little engine...130K miles and does not burn oil or leak.
The M1 meets Mercedes spec 229.3 and 229.5 and is SN rated.
Thanks Much for all the info!!
Amlor

If the next 4Runner is in fact a hybris..it may take the 0W8 oil, which some of the BMW's are supposedly Specially designed for Hybrid (H.E.V) and Plug-in Hybrid (P.H.E.V) vehicles, according to Motul. But, Toyota has also considered using it in Canada in extreme low temps..... all speculation I'm hearing from one of our oil suppliers.

I think the industry is headed that way. I saw both 0W-16 and 0W-8 on the shelf at the local Auto Zone yesterday...in Texas.