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MY local Sams club had a hell of a deal on 5w-20 mobile 1 @ $12 for a carton of 6 qts...WOW. I bought some for my Honda and then did a little searching wondering why I couldn't use it in my '06 Avy......found this bulletin!
http://www.matrixowners.com/tsb/TS-EG018-06.pdf

You might want to check your local Sam's and see if they have a deal. I may have to go back and really stock up......that's as cheap as conventional oil.
 

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And this spec for the 4 cylinder Toyota engine applies to an 08 Highlander with a V6 how:confused:
 

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There is a newer TSB than the one you have. There is a link to it in a previous post. It is dated August 07. It states to strictly use 5W-30.

The "GR series" your document states is the 2GR-FE. That is the 08 Highlander 3.5L engine which states 5W-20 should be used.

The Highlander Manual states 5W-30 if you're towing, 5W-20 if not.

Several Toyota dealers have stated me to use 5W-30.

Oil... The never ending topic of confusion...
 

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ehhh
why do oils have to be confusing >.>
 

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There is a newer TSB than the one you have. There is a link to it in a previous post. It is dated August 07. It states to strictly use 5W-30.

The "GR series" your document states is the 2GR-FE. That is the 08 Highlander 3.5L engine which states 5W-20 should be used.

The Highlander Manual states 5W-30 if you're towing, 5W-20 if not.

Several Toyota dealers have stated me to use 5W-30.

Oil... The never ending topic of confusion...
I doubt that. The Tundra's 3UR-FE can use 0W-20 or 5W-20. The UR and ZR series' were added to the list. 5W-20 is factory fill in MY2006+ Toyota approved engine series. Notice that Toyota also included engine series' that are already phased out for MY2006, like the JZ and VZ series?

The GR series includes the 1GR-FE, 2GR-FE, 2GR-FSE, 3GR-FSE, and 4GR-FSE.

The main benefit of a 20 weight during normal operation is less internal engine losses, and greater engine efficiency. Oil circulation is a parasite unless it's the weight of water, which is about a 0 weight. The thicker the oil, the harder the engine works. If say, you used a 5W-50 weight oil, you'd see marked fuel efficiency loss and possibly engine damage because the oil moves so much slower through the bearings and the entire engine.
 

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I do not understand why that TSB does not apply to the 05 corolla but to the 06+ corolla. What changed exactly between the 05 and 06? It is the same engine.
 

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I do not understand why that TSB does not apply to the 05 corolla but to the 06+ corolla. What changed exactly between the 05 and 06? It is the same engine.
Nothing. You can use 5W-20. The 1ZZ is on the list. The one exception is the 2AZ because Toyota revised the entire engine for 2007, so those 2AZs can use 0W-20, but the older ones can still use 5W-20.
 

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Nothing. You can use 5W-20. The 1ZZ is on the list. The one exception is the 2AZ because Toyota revised the entire engine for 2007, so those 2AZs can use 0W-20, but the older ones can still use 5W-20.
So the 1zz can use 5w-20, even the 8th gen corolla, that also has the 1zz? The TSB is confusing, it says applicable vehicles are 2006 – 2007 model year Toyota and Scion vehicles.
 

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So the 1zz can use 5w-20, even the 8th gen corolla, that also has the 1zz? The TSB is confusing, it says applicable vehicles are 2006 – 2007 model year Toyota and Scion vehicles.
Yeah, even the 1998 1ZZ can use 5W-20, but those are likely to have high mileage, and are probably burning oil. Just use some common sense really. If your engine series is on the list, and your engine is in good condition (i.e. not burning oil), use 5W-20.

The TSB does say it's applicable to 2006-2007 models, but what models do you know of that use the VZ or JZ series engines in those model years? It applies to those engine series in any model year (in good condition), but more so, it notifies the techs to use 5W-20 in 2006+ cars with those engines.
 

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I doubt that. The Tundra's 3UR-FE can use 0W-20 or 5W-20. The UR and ZR series' were added to the list. 5W-20 is factory fill in MY2006+ Toyota approved engine series. Notice that Toyota also included engine series' that are already phased out for MY2006, like the JZ and VZ series?

The GR series includes the 1GR-FE, 2GR-FE, 2GR-FSE, 3GR-FSE, and 4GR-FSE.

The main benefit of a 20 weight during normal operation is less internal engine losses, and greater engine efficiency. Oil circulation is a parasite unless it's the weight of water, which is about a 0 weight. The thicker the oil, the harder the engine works. If say, you used a 5W-50 weight oil, you'd see marked fuel efficiency loss and possibly engine damage because the oil moves so much slower through the bearings and the entire engine.
This is correct. All of Toyota's new generation engines have super-low friction designs, including the 2ZR in the 2009 Corolla. This allows for the use of 5W-20 or in some cases 0W-20 oil.

Reduced friction means better fuel economy, more power and performance, and less stress on the engine.
 

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Nothing. You can use 5W-20. The 1ZZ is on the list. The one exception is the 2AZ because Toyota revised the entire engine for 2007, so those 2AZs can use 0W-20, but the older ones can still use 5W-20.
:confused: According to the TSB you can use 0W20 in the 2AZ from 2006, not 2007 as you stated.


ILSAC GF–4 SAE 0W–20
This oil has even better fuel efficiency and cold starting performance than 5W–20. Initial​

application for 0W–20 is in the 2006 model year 2AZ–FE engine and will be used in new
engines to be developed.

ILSAC GF–4 SAE 0W–20
(Beginning with 2006 MY)
2AZ–FE Camry
2AZ–FE Solara
2AZ–FE Highlander​
2AZ–FE RAV4 (ACA3#)


What on the "entire engine" was revised on the 2AZ-FE in '07?

 

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The 2AZ received revised cylinder heads for reduced NVH, new intake and exhaust manifolds, and some tweaks to the pistons and rings.

The early 2AZs were notoriously noisy, so using 0W-20 will only exaggerate that, but I guess you can use it.
 

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:confused: According to the TSB you can use 0W20 in the 2AZ from 2006, not 2007 as you stated.

What on the "entire engine" was revised on the 2AZ-FE in '07?

[/left]
Every year automakers usually make minor changes in their engines. Toyota each year makes minor improvements and subtle changes to engines for example, not including major changes that usually Toyota announces.

I don't know exactly what improvements were made on the 2AZ, but it seems that a combination of subtle and minor improvements now allows for the use of 0W-20 oil.

The improvements likely are related to reducing friction and tolerances between engine parts. 0W-20 oil is rare to see being used in production engines today.

I myself am interested to know exactly what improvements were made.

MY2007 was what I meant, or CY2006 as the TSB states.

The 2AZ received revised cylinder heads for reduced NVH, new intake and exhaust manifolds, and some tweaks to the pistons and rings.
Likely the tweaks to the pistons and rings along with the cylinder heads has allowed for the use of 0W-20 oil.
 

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Every year automakers usually make minor changes in their engines. Toyota each year makes minor improvements and subtle changes to engines for example, not including major changes that usually Toyota announces.

I don't know exactly what improvements were made on the 2AZ, but it seems that a combination of subtle and minor improvements now allows for the use of 0W-20 oil.

The improvements likely are related to reducing friction and tolerances between engine parts. 0W-20 oil is rare to see being used in production engines today.


I myself am interested to know exactly what improvements were made.
Thanks.

I appreciate you answering my question to another...

...with a question.


vasia said:
Likely the tweaks to the pistons and rings along with the cylinder heads has allowed for the use of 0W-20 oil.
Not likely, but thanks for playing.
 
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