Can more viscous oil be used?

[Son_of_shots]

"In some of the variable valve timing (VVT) engines and V-type blocks, oil clearance is critical to get the proper operation of the VVT." -enginebuildermag. To get the correct oil clearance, USE ONLY a premium grade 0W-20 detergent oil (in all weather conditions) with an API seal on the container, as written in a typical owner's manual. More viscous oils may not lubricate the valve train properly.

 

[Kalle.J]

https://bobistheoilguy.com/forums/threads/vvt-and-thicker-oil.384972/

If thats a K20 head it runs just fine on xW40

 

[tcp71]

Cold oil is far more "viscous" than the difference between 20 and 40 weight oil at operating temperature. Every VVT system I know of runs a feedback loop with a PWM solenoid driver to control the amount of oil controlling the timing. It adjusts the amount until the desired amount of valve variance is achieved.

 

[Rand]

. To get the correct oil clearance, USE ONLY a premium grade 0W-20 detergent oil (in all weather conditions) with an API seal on the container, as written in a typical owner's manual. More viscous oils may not lubricate the valve train properly.

Is this another quote or your opinion?

 

[kschachn]

You've done a good job of hitting on a whole group of repeat and contentious topics here. VVT, clearances, thick vs. thin, proper lubrication, owner's manual requirements.

Good study of Bitog.

 

[spasm3]

"In some of the variable valve timing (VVT) engines and V-type blocks, oil clearance is critical to get the proper operation of the VVT." -enginebuildermag. To get the correct oil clearance, USE ONLY a premium grade 0W-20 detergent oil (in all weather conditions) with an API seal on the container, as written in a typical owner's manual. More viscous oils may not lubricate the valve train properly.View attachment 231817

Who is this in response for? Or is this a troll post?

 

[4WD]

https://en.wikipedia.org/wiki/Déjà_vu

 

[wwillson]

This is a good thread to reference:

https://bobistheoilguy.com/forums/threads/vvt-and-thicker-oil.384972/