5w-30 too thick for modern cars?

[GW.]

I can see how thicker oil could mess up a VVT solenoid.
Some have very small oil passages.
Seen a few 1.8L 1ZZ engines run like crap when bad maintenance clogges up solenoid passages.

View attachment 312123

Big difference between debris and oil molecules.

5W-30 does not affect VVT operation. Believe me I know.

 

[SC Maintenance]

I can see how thicker oil could mess up a VVT solenoid.
Some have very small oil passages.
Seen a few 1.8L 1ZZ engines run like crap when bad maintenance clogges up solenoid passages.

View attachment 312123

Pretty sure at that point it doesn't matter what weight oil your running.

 

[Rand]

I can see how thicker oil could mess up a VVT solenoid.
Some have very small oil passages.
Seen a few 1.8L 1ZZ engines run like crap when bad maintenance clogges up solenoid passages.

The problem is if the 5w30 is 20f hotter it could be thinner than your 0w20....

 

[3rdGenGuy]

Big difference between debris and oil molecules.

5W-30 does not affect VVT operation. Believe me I know.

View attachment 312125

How is a blury pic of a basic commuter car proof of "Knowing"???

 

[MalibuRam65]

0w20 is a thickie now you good to go . Let’s trust what Lexus has to offer and recommend.

 

[GW.]

How is a blury pic of a basic commuter car proof of "Knowing"???

You’re joking right???? How thick do you think my oil was at -18f?

 

[3rdGenGuy]

You’re joking right???? How thick do you think my oil was at -18f?

Car ambient temp sensors are very inaccurate.
My families' new cars all read way off
If you had a pic of a Fluke Temp sensor, I'd believe you.
Not to mention that's not is350 for one.

 

[SC Maintenance]

OP is trolling at this point. Some people just are not interested in learning.

 

[zrxkawboy]

I don't understand what you mean by you changed them.

He replaced the exhaust gaskets.

 

[GW.]

Car ambient temp sensors are very inaccurate.
My families' new cars all read way off
If you had a pic of a Fluke Temp sensor, I'd believe you.
Not to mention that's not is350 for one.

You don’t even want an answer to your question….troll.

Pretty darn accurate…isn’t it?

 

[Wireman1987]

Oh boy

 

[SC Maintenance]

I guess diagnosing and testing the car is "trolling".
Imagine thinking I'd spend $80 on oil tests to troll.
I don't think your generation even understands what that word means.

What generation would that be?

Please tell me how paying for a oil analysis is diagnosing a closed loop control system?

Or my original question - how can viscosity of an oil affect VVT cam position?

You are the diagnostic expert after all.

 

[incognito_2u]

But a guy that I work with used to be a master Toyota technician.
He said that thicker 10w-30 oils can sometimes interfere with VVT systems or variable cam lift stuff.
He said the earlier hybrids were very particular about using thinner oils.

Is his name “The Car Care Nut”?………
Asking for a friend

 

[Bryanccfshr]

No issues with higher viscosities in this engine I have run 0w40 for 50k miles in my 2gr fks no performance issues. (96k on unit) I recently put 0w20 in it because I wanted to run a particular oil, no issues or difference how it runs.

 

[facility1]

0w-20 in winter,5w-30 in summer months, should be no problem, Pennzoil Ultra Platinum is a good oil which I run in my Subaru with no ill efects mpg stays the same,and not sluggish.

 

[wwillson]

I can see how thicker oil could mess up a VVT solenoid.
Some have very small oil passages.

On startup both 0w20 and 5w30 are very thick. Does your VVT fail to work at startup? No.

When the oil temperature with 5w30 is 235F and the viscosity is lower than a 0w20 oil with a temperature of 180F, does your VVT fail to work correctly? No.

Does a 5w30 oil have a functionally different ability to be pumped through the holes in the VVT solenoid? No.

Seen a few 1.8L 1ZZ engines run like crap when bad maintenance clogges up solenoid passages.

Bad maintenance has nothing to do with viscosity.

 

[Gyro Gearloose]

I'll just toss out there that GM recently shot all the way up to 0w40 for a large population of VVT V8's that already had problematic lifters.

 

[CleanSump]

This "Boomer" knows when to click on ignore. Problem fixed!

 

[edyvw]

That engine in Europe was recommended to use ACEA C3 oil which is borderline XW40.

 

[edyvw]

I can see how thicker oil could mess up a VVT solenoid.
Some have very small oil passages.
Seen a few 1.8L 1ZZ engines run like crap when bad maintenance clogges up solenoid passages.

View attachment 312123

My 3UR-FE would disagree: