3.6 l Engine Oil Type

[DanW]

You are entitled to your opinion about Amsoil. Amsoil, nor any Amsoil blog provided me with any information in regards to 0w30 or 5w30 being the optimum weight to protect most water cooled engines. Clearly the switch to thinner and thinner oils is for CAFE numbers. The goal of Chrysler and any other car manufacturer is to get you through the warranty period. 0w20 will do that and some 0w20 oils do provide good wear protection. The manufacturer needs to to trade in and get a newer model, that's how they make moneu along with out of warranty work. I simply repeated that 30wt does provide more protectionthan 20wt. The blog I got very detailed information from is Rat540. Based on his testing Amsoil didn't finish first.(a close second). I guess some Amsoil guy rubbed you the wrong way, I am not that guy. I didn't drop my site or anything. I just simply put that out there if anyone was interested. In fact the vast majority of oils that meet Dexos and other industry standards would serve the average Jeep user well. If you do Severe duty, heavy off roaing or rolling on bigger tires than those folks need extra protection.

I will reiterate that I am not quoting Amsoil informationon about 30wt or anything else I wrote about. So, there is no "Amsoil misinformation " here. It is a fact that the manufacturer's goal is to get the customer through the warranty period. That is the goal of any business. I never said that most would not run problem free well past that. I own a Jeep with the Pentastar, in fact I have had 4 vehicles with the 3.6. I have been blessed that all had no major issues except the first one. It was a 2011 Grand Cherokee with the dreaded cylinder 2 misfire. Chrysler did give me a letter on it covering any cylinder head replacement up to 150k. I chose to trade it in for another Grand Cherokee.
I am not trashing Chrysler or our Jeeps. I am a guy who is brand loyal, loves Jeep and has a strange interest in engine oil. I have used many brands over my lifetime and my 25 years in law enforcement. I found Amsoil works great for me and the applications I use it. There are many fine oil products out there, I stated that in my earlier post. One thing I can assure you is that I believe in honesty and transparency. If any admin wishes to erase the part of my earlier post in regards to how to save on Amsoil, then I understand and hard feelings.

And I've said it is NOT the design goal of the engine to get throught he warranty period. That is absolutely 100% false for ANY manufacturer. FCA's standard was over 90% reaching 150k miles even back when they made the 0ld 4.7 V8 and 3.8 and it was the standard when the Pentastar was designed. That is far beyond getting past the warranty. Go and speak to an actual powertrain engineer at any OEM, but especially Stellantis. That's exactly where I got the information.

Amsoil is great oil and I'm sure the engine would do fine on 5w30 or even 0w 30. Maybe even 10w30. But the PUG version in the JL was 100% designed (redesigned) with 0w20 in mind from the start. All durability testing was done on that weight of oil. And these things sail way past the warranty period by the millions doing 8k to 9k oil change intervals on the cheapest 0w20's on the market. Ulike the first gen, even the overseas PUG Pentastars are specified to run 0w20. And it works just fine, as did 5w20. I remember the world going nuts over all the engines that would prematurely wear out because 5w20 wouldn't protect them. In fact, I'm old enough to remember when people freaked out about moving from 10w40 to 10w and even 5w30.

We simply are not seeing engines wearing out. In fact, we're seeing them live longer lives now than ever. I remember when we'd get excited about seeing a Volvo 240 with 200k on it. Now it is common.

An interesting side note. The Pentastar engineer told me that this engine killed Chrysler's program where they'd give you a badge for achieving mileage milestones such as 150k, 200k, 300k, and so on. Too many of them were making it there and beyond and they were expensive badges.

So it doesn't look like 5w20 caused any wear concerns in the Pentastar. Or any other FCA/Stellantis application, either. My 2008 JK's old 3.8 runs like new at 168k and counting. It's had a 14 year diet of mostly Mobil 1 5w20 and more recently some 0w20. Funny, though, it isn't past the warranty period. Other than normal maintenance, it's only had the water pump replaced.

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[Caleb75]

And the Amsoil marketing appears, once again without being a site sponsor. Wholesale pricing. Right. Nothing but marketing BS. And of course, Amsoil knows better than the folks who designed the 3.6, including my friend who runs 20 weight and was in on the development of the original Pentastar when they used 5w30.

0w30 requires quite a dose of viscosity improving additives which are prone to shear. So you still wind up with it shearing down and it can be less shear stable than a 5w30. It will probably do fine in this engine, but no better and probably not as well as the specified 0w20.

If I were to run Amsoil in this engine, it would be Signature 0w20.

You are entitled to your opinion about Amsoil. Amsoil, nor any Amsoil blog provided me with any information in regards to 0w30 or 5w30 being the optimum weight to protect most water cooled engines. Clearly the switch to thinner and thinner oils is for CAFE numbers. The goal of Chrysler and any other car manufacturer is to get you through the warranty period. 0w20 will do that and some 0w20 oils do provide good wear protection. The manufacturer needs to to trade in and get a newer model, that's how they make moneu along with out of warranty work. I simply repeated that 30wt does provide more protectionthan 20wt. The blog I got very detailed information from is Rat540. Based on his testing Amsoil didn't finish first.(a close second). I guess some Amsoil guy rubbed you the wrong way, I am not that guy. I didn't drop my site or anything. I just simply put that out there if anyone was interested. In fact the vast majority of oils that meet Dexos and other industry standards would serve the average Jeep user well. If you do Severe duty, heavy off roaing or rolling on bigger tires than those folks need extra protection.

Wrong on the goal of the design. The design goal is a percentage (I cannot recall the exact #, but it is over 90 and may be 95) will get to 150k miles with no major problems. That's well beyond the warranty. So Amsoil misinformation persists. The Pentastar has actually exceeded their design goal better than other engines in their portfolio and better than most in the industry.

My problem is not with Amsoil itself. Signature is a good oil. It's the marketing BS which is well documented in this thread. That combined with its price keeps me from even considering it.

I will reiterate that I am not quoting Amsoil informationon 30wt or anything else I wrote about. So, there is no "Amsoil misinformation " here. It is a fact that the manufacturer's goal is to get the customer through the warranty period. That is the goal of any business. I never said that most would not run problem free well past that. I own Jeep with the Pentastar, in fact I have had 4 vehicles with the 3.6. I have been blessed that all had no major issues except the first one. It was a 2011 Grand Cherokee with the dreaded cylinder 2 misfire. Chrysler did give me a letter on it covering any cylinder head replacement up to 150k. I chose to trade it in for another Grand Cherokee.
I am not trashing Chrysler or our Jeeps. I am a guy who is brand loyal, loves Jeep and has a strange interest in engine oil. I have used many brands over my lifetime and my 25 years in law enforcement. I found Amsoil works great for me and the applications I use it. There are many fine oil products out there, I stated that in my earlier post. One thing I can assure you is that I believe in honesty and transparency. If any admin wishes to erase the part of my earlier post in regards to how to save on Amsoil, then I understand and hard feelings. There is a way to get the 6 month PC and get your money back on the first order. It

And I've said it is NOT the design goal of the engine to get throught he warranty period. That is absolutely 100% false for ANY manufacturer. FCA's standard was over 90% reaching 150k miles even back when they made the 0ld 4.7 V8 and 3.8 and it was the standard when the Pentastar was designed. That is far beyond getting past the warranty. Go and speak to an actual powertrain engineer at any OEM, but especially Stellantis. That's exactly where I got the information.

Amsoil is great oil and I'm sure the engine would do fine on 5w30 or even 0w 30. Maybe even 10w30. But the PUG version in the JL was 100% designed (redesigned) with 0w20 in mind from the start. All durability testing was done on that weight of oil. And these things sail way past the warranty period by the millions doing 8k to 9k oil change intervals on the cheapest 0w20's on the market. Ulike the first gen, even the overseas PUG Pentastars are specified to run 0w20. And it works just fine, as did 5w20. I remember the world going nuts over all the engines that would prematurely wear out because 5w20 wouldn't protect them. In fact, I'm old enough to remember when people freaked out about moving from 10w40 to 10w and even 5w30.

We simply are not seeing engines wearing out. In fact, we're seeing them live longer lives now than ever. I remember when we'd get excited about seeing a Volvo 240 with 200k on it. Now it is common.

An interesting side note. The Pentastar engineer told me that this engine killed Chrysler's program where they'd give you a badge for achieving mileage milestones such as 150k, 200k, 300k, and so on. Too many of them were making it there and beyond and they were expensive badges.

So it doesn't look like 5w20 caused any wear concerns in the Pentastar. Or any other FCA/Stellantis application, either. My 2008 JK's old 3.8 runs like new at 168k and counting. It's had a 14 year diet of mostly Mobil 1 5w20 and more recently some 0w20. Funny, though, it isn't past the warranty period. Other than normal maintenance, it's only had the water pump replaced.

Oils have definitely come a long way in our lifetime. Base oils and additives are light years better than when we got our first cars. The oil certification process and manufacturer spec standards (Dexos and others) have truly made all oils better. Engines have come a long way as well. The power the Jeep 2.0 turbo makes is very impressive and the engineering that went into our Pentastar engine was definitely next level compared to the JK 3.8. My first Jeep was 08 JK Sport with the 3.8. Great Jeep but underpowered and when I drove a JK with the 3.6 I was so impressed I had to have one. My current ride is a 2020 JLU Sport Altitude 3.6. It is the best Jeep I have ever owned. The Pentastar has had its growing pains and each new generation is better than the last. It is a great engine a true muti-platform workhorse. The key to engine longevity is to use a good high quality oil, high quality filter and changing it at the recommended intervals.

 

[SparkyIBEW]

So, for some of us that change our own oil, what happens while under warranty the engine takes a dump. Beside having our receipts for oil and filter purchases, are we suppose to take a picture or video (that has a date), of the oil draining so it can be matched with the oil receipts? I asked the service manager at Peterson's about this and he wouldn't give me a straight answer.

 

[roaniecowpony]

So, for some of us that change our own oil, what happens while under warranty the engine takes a dump. Beside having our receipts for oil and filter purchases, are we suppose to take a picture or video (that has a date), of the oil draining so it can be matched with the oil receipts? I asked the service manager at Peterson's about this and he wouldn't give me a straight answer.

The oil change history is documented in the ECU everytime you reset the oil change life monitor. No other documentation will support it any better than that. Other than that, the oil condition itself will be the determining factor in whether you would be challenged for not having changed oil at prescribed intervals. The service manager couldn't give you an answer, likely because he's never had to challenge an owner on whether an oil change was done at the correct interval. They never will, unless it's obvious the oil is so bad that it led to a problem. And even then, they would have to believe that the oil was bad due to negligence and not due to the engine failure.

 

[SparkyIBEW]

That sounds pretty good on paper Roan, but my devious mind see's that from a different angle after having a chat with the manager who insisted I'd be only saving $30 by doing the oil change myself, I didn't argue, I didn't want to burn any bridges, I may need his help for a future warranty issue . He also cringed when I told him I'd be changing the oil after the first 100 miles and couldn't grasp the concept of that. He mentioned how the system worked with the dealership having to produce maintenance records to Jeep headquarters who would ultimately make the decision of honoring a warranty issue. Reseting the oil change life monitor can be done whether the oil was actually changed or not. For as stupid and bizarre as that may seem, it wouldn't surprise me if someone does that, nothing surprises me much anymore. When the rubber meets the road, and a guy has a mechanical issue involving the engine, Differentials, transfer case etc etc, proof of maintenance by the dealership would be a slam dunk, but for me the little guy doing my own wrenching, makes me ponder reality. I hate having the dealership doing anything on my vehicles. I've had numerous dump stupid screw ups in the past along with some good outcomes.

 

[SparkyIBEW]

Back to just resetting the monitor without actually changing the oil. Years ago, I worked with a guy who insisted that oil didn't need to be changed and only the oil filter needed replacement on regular intervals. He claimed changing oil every 3000 miles was a scam and the oil didn't degrade. So there is one real life example. And this guy was a pretty sharp dude.

 

[jmr]

Why did is the 3.6 oil capacity in the Wrangler 5 quarts and not 6? Is it for off road clearance?
Last week I changed the oil in our 3.6 Grand Cherokee after 4.000 miles and 58% on oil monitor.
I drained out 6 quarts with no oil loss the 3.6 has 10,000 miles.

 

[LT1]

https://540ratblog.wordpress.com

 

[pbkolsun]

Ok, so I am new to Jeep and I have a 2022 Jeep Wrangler Sahara…I have about 8900 miles on the vehicle.
I see the oil life indicator in the vehicle health report and it seems to have rapidly gone down once it hit 34%…it is now at 2% yet I have no indicator other than a message kindly suggesting that I change my oil.
I thought oil changes were to be done roughly every 10k miles?
With that being said I do have an appointment to get the oil changed on Monday but if I wanted to add a quart of oil if necessary to the vehicle what oil comes from the factory?

also of the dealer that is changing my oil going to give me crap because I waited so long? I thought a light would come on when the oil needed changed…I usually don’t wait for the lights but it seems like the oil life dropped from 34% life to 2% in less than two weeks. So I am just trying to understand what that life indicator is really telling me.
Thanks
Phillips

 

[roaniecowpony]

Ok, so I am new to Jeep and I have a 2022 Jeep Wrangler Sahara…I have about 8900 miles on the vehicle.
I see the oil life indicator in the vehicle health report and it seems to have rapidly gone down once it hit 34%…it is now at 2% yet I have no indicator other than a message kindly suggesting that I change my oil.
I thought oil changes were to be done roughly every 10k miles?
With that being said I do have an appointment to get the oil changed on Monday but if I wanted to add a quart of oil if necessary to the vehicle what oil comes from the factory?

also of the dealer that is changing my oil going to give me crap because I waited so long? I thought a light would come on when the oil needed changed…I usually don’t wait for the lights but it seems like the oil life dropped from 34% life to 2% in less than two weeks. So I am just trying to understand what that life indicator is really telling me.
Thanks
Phillips

You can add any brand of oil meeting the spec in your owners manual. What came in it is shown below. But that doesn't mean you can't mix it with other brands, since finding Mopar brand oil will be low percentage.

It would be a poor move by any dealership employee to give a customer crap about anything, let alone for your situation.

 

[SparkyIBEW]

Don't wait so long between oil changes Phil. 10,000 miles is really pushing it no matter what percentage your Jeep is telling you. Zero out your trip B mile counter when you do a oil change to keep track of mileage and change it more often, 8,000 max. The oil is your engine's life blood. I do mine every 5000.

 

[OldBlue]

I do my 3.6L every 7,500 miles, and the wife's 2.0L Turbo every 5,000.

 

[SparkyIBEW]

This always stirs the pot among our experts. Just did my second oil/filter change today at 980 miles, did the first one at 200. Every 5K from here on out. Just a few words regarding the Fumoto valve. I attached a 12”- 3/8” hose to it and drained it directly into the 5 gallon used oil container. What a dream! Drain, filter and fill= 25 minutes with no mess. Damn, I wish I had that valve years ago on my other cars.

 

[SparkyIBEW]

 

[wolf]

Don't wait so long between oil changes Phil. 10,000 miles is really pushing it no matter what percentage your Jeep is telling you. Zero out your trip B mile counter when you do a oil change to keep track of mileage and change it more often, 8,000 max. The oil is your engine's life blood. I do mine every 5000.

I agree. I do the same even with Amsoil.

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