5W 30 versus 0W 20

[roaniecowpony]

Long time lurker, finally joined yesterday. This is my opinion on the matter.

Normal pedestrian driving my oil temps are between 195f to 212f. 0W-20 is 100% acceptable and preferred.

Off roading my oil temps are 236f to 248f. 0W-20 is no longer appropriate.

I have settled on 0W-30 for all circumstances. Great cold cranking rating and high temperature protection. Currently using M1 ESP in my 21 JL 3.6.

I just filled mine with this oil yesterday.. I had been using M1 Supercar, but decided to move back to ESP just due to price and availability. Very similar oils. My OCI is 2000-3000 mi.

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[GW’s JL]

I just filled mine with this oil yesterday.. I had been using M1 Supercar, but decided to move back to ESP just due to price and availability. Very similar oils. My OCI is 2000-3000 mi.

Both fantastic oils! Supercar was the original ESP Formula 0W-40 as you probably already know. It’s nice walking into Wally and grabbing ESP 0W-30 for $28!

 

[roaniecowpony]

Both fantastic oils! Supercar was the original ESP Formula 0W-40 as you probably already know. It’s nice walking into Wally and grabbing ESP 0W-30 for $28!

I found this on BITOG.

 

[Nokones]

Long time lurker, finally joined yesterday. This is my opinion on the matter.

Normal pedestrian driving my oil temps are between 195f to 212f. 0W-20 is 100% acceptable and preferred.

Off roading my oil temps are 236f to 248f. 0W-20 is no longer appropriate.

I have settled on 0W-30 for all circumstances. Great cold cranking rating and high temperature protection. Currently using M1 ESP in my 21 JL 3.6.

Why would the OW-20 oil no longer be appropriate for off-roading when the oil temp is well within the normal operating temps range, especially since that is the viscosity that the factory has required to be used for the 3.6L engine?

What are those circumstances for the use of the 0W-30 oil when it is not recommended by the factory?

 

[CorgiAttack]

Will do 5w-20, 22 etorque 3.6L , just feel the engine noises get louder, also think 20 is too thin for the engine

 

[GW’s JL]

Why would the OW-20 oil no longer be appropriate for off-roading when the oil temp is well within the normal operating temps range, especially since that is the viscosity that the factory has required to be used for the 3.6L engine?

What are those circumstances for the use of the 0W-30 oil when it is not recommended by the factory?

If you’re 100% convinced and comfortable that the factory recommended grade covers severe service it doesn’t matter what my opinion is. I won’t bother you with how oil temp affects viscosity and MOFT.

 

[roaniecowpony]

Why would the OW-20 oil no longer be appropriate for off-roading when the oil temp is well within the normal operating temps range, especially since that is the viscosity that the factory has required to be used for the 3.6L engine?

What are those circumstances for the use of the 0W-30 oil when it is not recommended by the factory?

You should use the oil that you are comfortable running.

The rest of us are renegades that deviate from written gospel.

 

[Nokones]

If you’re 100% convinced and comfortable that the factory recommended grade covers severe service it doesn’t matter what my opinion is. I won’t bother you with how oil temp affects viscosity and MOFT.

I'm just trying to understand what do you define "severe service" when you stated that your oil temp is well within the normal operating oil temp range for the 3.6L which is 230-260 degrees. Being off-road or on-road won't make a difference if the engine is operating in the normal oil temp range.

 

[Nokones]

You should use the oil that you are comfortable running.

The rest of us are renegades that deviate from written gospel.

I'm not questioning anyone's oil viscosity comfort factor and you're more then welcome to deviate all you want from any written gospel.

 

[roaniecowpony]

I'm not questioning anyone's oil viscosity comfort factor and you're more then welcome to deviate all you want from any written gospel.

Here's a related blog from Shell oil.
The Effect of Temperature on Lubricant Viscosity | Business

Oil exposed to high temperatures, deteriorates. It does this exponentially faster as temperatures rise.

 

[Nokones]

Here's a related blog from Shell oil.
The Effect of Temperature on Lubricant Viscosity | Business

Oil exposed to high temperatures, deteriorates. It does this exponentially faster as temperatures rise.

Oh, I totally agree with the information stated in your attachment and find it very credible. So, why are you not following that credible information, is it that you just want to be a deviator?

 

[roaniecowpony]

Oh, I totally agree with the information stated in your attachment and fine it very credible. So, why are you not following that credible information, is it that you just want to be a deviator?

Which credible information? The information from the engineers that created the 3.6 valvetrain, the oil cooling system, and the deck design? Or the credible information that oil viscosity is the most important characteristic in protecting moving parts?

 

[Nokones]

Which credible information? The information from the engineers that created the 3.6 valvetrain, the oil cooling system, and the deck design? Or the credible information that oil viscosity is the most important characteristic in protecting moving parts?

I was referring to the information stated by Shell in your attachment. You attached that information for some reason. Are you saying that you don't agree with that attachment and do not endorse it? Then why did you attach it if you don't believe in all of that credible information.

Anyways, only the JL Forum oil experts are saying that the valvetrain failure on the 3.6L engine is viscosity related which is not credible information since these forum oil experts are not SMEs or don't even come close demonstrating that they have the E&E to credibility speak for the OEM Engineers. The real OEM Engineers have stated that the failure was related to design and materials used.

If it was related to the OW-20 oil, there also would be other component failures that would be related to viscosity and that is not the case.

 

[roaniecowpony]

I was referring to the information stated by Shell in your attachment. You attached that information for some reason. Are you saying that you don't agree that attachment and do not endorse it? Then why did you attach it if you don't believe in all of that credible information.

Anyways, only the JL Forum oil experts are saying that the valvetrain failure on the 3.6L engine is viscosity related which is not credible information since these forum oil experts are not SMEs or don't even come close demonstrating that they have the E&E to credibility speak for the OEM Engineers. The real OEM Engineers have stated that the failure was related to design and materials used.

If it was related to the OW-20 oil, there also would be other failures that would be related to viscosity and that is not the case.

I think people switching to higher viscosity are saying there is something wrong with the 3.6 and that they are changing the only things that they have control over to crutch the problem up. Lowering the oil operating temperature and increasing the selected grade of oil provides an increase in film strength. If you're trying to convince anyone 0w20 is the best oil for lubrication qualities in this engine, you're swimming upstream.

 

[GW’s JL]

I'm just trying to understand what do you define "severe service" when you stated that your oil temp is well within the normal operating oil temp range for the 3.6L which is 230-260 degrees. Being off-road or on-road won't make a difference if the engine is operating in the normal oil temp range.

Again I’m not here to change people’s mind. Just stating my opinion based on my experiences in the automotive world.

In the oil world when oil temps go over 225f-230f a 30 grade is recommended. In the motorsports world a tracked 20 grade(which is rare and extreme) is kept under 200f with oil coolers. This is all based on viscosity at high temperatures and avoiding going below MOFT as much as possible.

There was a time when severe service was clearly defined in the owners manual.

Driving in extreme temperatures (above 90°F)

Stop-and-go traffic, or extended idling

Towing trailers, or carrying heavy loads

Off-road driving or driving in dusty conditions

Track use

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