Toyota oil requirements...

so the manual says 0w20 viscosity is "recommended"....this is not a requirement.

it says if a 5w20 is used, you "must" go back to 0w20 next oil change. This to me means the "0" portion of 0w20 is the most important that "could" be interpreted as a requirement.

i don't think they could give you a warranty issue on a 0w30 or 0w40 oil. Hell, as long as its Ilsac-5, i dont think they could deny any warranty claim from the oil. They don't prohibit any oil in the manual at all.

anyone see anything different?

 

Just by the logic you used to determine that the 0 was the most important.

You could also arrive on 20 being the most important. As it is the only number common to both oils mentioned.

That said, I have run 5w-30 in the 5.7 with zero problems

 

I’ve been using 5w-30 also.

 

5w30 used to be the spec for the 5.7 I think, 0w20 is only there to satisfy CAFE and govt bs I believe. I think our motors should be on something like 5w30, mine in the hot months with 0w20 makes a heck of a racket.

 

I would imagine where you live is important too. In southwest it is almost 80-90 degrees (hotter in some spots) for half the year. I probably wouldn’t run 5w oil if I lived in a colder area

I will say, 30w oil shuts up the valve chatter at idle....

 

I bought 5w-20 for first oil change. Never looked at cap just had 5w on my mind. I think I will stick with it here in TX. I had a PoS 5.4 Ford Triton that drank 0W-20. I had to switch to a heavier oil on it to keep consumption in check. Quart per 1500 miles well within Ford's spec. Ford replaced some 5.4s early on but got tough. Just glad I checked it and caught the consumption.

 

Toyota engineers know what they are doing. I trust them over a forum users "feelings" about what the engine should run or the average joe thinking they know what is best for the engine. Toyota engineers know what is best for the engine and they say 0w20.

0w20 performs wonderfully and has been proven with science and through thousands and thousands of used oil analysis tests.

 

How’s the coolaid taste today?



Just kidding! I drink the recommended 0W20 as well. And fill my engine with beer. Or maybe that’s backwards.

 

No doubt the engineers know what there doing, but then there is people above them telling them they need to hit certain Cafe and mpg standards. Old spec was 5w30, same motor now 0w20.

 

0W20 all year long no issues.

 

In a northern clime I would not use anything else. For cold weather starts you definitely want a thinner oil. I remember the days of single weight oils and switching to lighter weights in winter. I think in southern climes 5w is fine. Maintenance manuals cover all climes and no longer specify different oils for colder ones.

 

0W or 5W. It's of ZERO consequence if you take a few minutes and warm the damn oil and engine up. That 0W might be a bit nicer if you're prone to: start it up, jam it in drive, and sail away at 2,500/3,500 rpms.

Me? I always let the oil/engine warm up a bit before I take off when it's cold.

And now the part my lawyer asked me to include: YMMV.

 

X2

 

I don’t doubt this at all. But I also think many things can be true at once. 0-20 could be great. As could 5-20, 0-30 and 5-30.

I have tried 0w-40 and the engine didn’t feel the same. Maybe it was in my head. Drained it and replaced with 5-30, ran much smoother

 

Why do people have to use something different than what is on the cap. Use the oil determined by the manufacturer. It's synthetic 0w-20 and that's it. Toyota can't be more clear than that in the manual and on the cap. They know more than some of you guys "feel" or "think" is best. How many of you have the equipment and education for true oil analysis?

 

I want to keep my cam towers gaskets soaked in chit as thick as molasses... LOL

 

https://www.blackstone-labs.com/oil-viscosity/

 

I run 5-30 in mine as well. I've read that in other parts of the world the Tundra specs for 5-30. Only in the US is the 0-20 specified.

 

The engine overall is the same, but I bet the tolerances of the engine have gotten tighter---and that is where the 0w20 would be the better oil spec to run.

 

Without proof of that I bet that's not the case, no way Toyota changes specs on the engine mid cycle for an oil. Shoot they cant even fix the cam tower leak which would cost the $. Until its a revised motor like Nissan did with the new Titan reworking the 5.6 then I bet specs are the same.

I run the 0w20 in mine like the cap says I just feel the motor is pretty noisy with it in the summer months.

 

0W-20 all year long for me. If it needs some warming up in the winter, I have a block heater on it. I think that I read that some newer small engines are now specing 0W-16, imagine that!

 

Then you'd be wrong. If you don't think Toyota makes small changes to the engine throughout its cycle that are not really publicized, then you are very naive. Mike Sweers admits that in this clip while talking about the Tundra engine. He actually says that they make small improvements to the engine to improve its efficiency, but they don't talk about it because it didn't change the torque or horsepower. The segment I am referencing starts at 1:58:
https://www.youtube.com/watch?v=vsQ4tHIThs4

 

And what I said could be what was changed...we don't know. My point to the other poster was that Toyota does make small changes to the engine throughout its life without publicizing it. There is no reason to believe that tolerances could not have been tightened and/or some other changes, therefore prompting the engineers to spec 0w20 in addition to helping with cafe standards. He tried to claim they wouldn't do that. My point still stands about the 0w20.

 

If I was on my home computer I would look faster.

But going to castrol’s International sites and looking up European land cruiser 5.7 it calls for 20w-50.

Would be interested to search more

 

If a 5w or a 0w screws this motor up I’m headed for a lifted f150 ! Lol

 

Ronin73 swinging swords, yo!