2025 Gladiator 3.6L Oil Analysis

[Hootbro]

Did my first oil analysis on my 2025 Gladiator Sport 3.6L Pentastar. Samples were taken with 6768 miles on the engine with 3292 miles on this oil change interval. Oil used was Quaker State Full Synthetic 5W-30 using a FRAM PH10575 oil filter on a Baxter Performance oil adapter.

Replaced with Quaker State Euro 5W-40 and a Premium Guard PG2500 oil filter.

Decided to try "Oil Analyzers" for the first time but also sent a second sample taken at the same time to Blackstone Laboratories to make the comparison between the two. Below is spreadsheet comparison between the two labs for the results.

Basic take away from either lab results is that it is wearing in normally. Wear metals between the two labs are nominal with some slightly higher number spreads on the additives but they seem to be in expected ranger for the grade and API spec of the oil used.

Main difference and I have heard this before, Blackstone Laboratories does a guestimate on fuel dilution based on flashpoint and Oil Analyzers does a true fuel dilution test and those numbers came in higher than what Blackstone Laboratories estimates

Going forward, I am probably going to use Oil Analyzers for my oil analysis needs at least for this Gladiator.

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[Mister Lamb]

Interesting.. thanks for sharing. What mileage was your very first oil change? Or was the change at 3292 it?

 

[Hootbro]

Interesting.. thanks for sharing. What mileage was your very first oil change? Or was the change at 3292 it?

3292 miles was the interval on the oil that was changed at 6768 miles on the engine (6798 is a typo in my comparison chart).

First oil change was around 750 miles and next one 3476 miles.

 

[wolfdog]

Why?

what value is this work, I don’t get what value to analyze? Results show what’s happening in your engine but except for using different oils, changing at different times or perhaps modifying driving habits what is the value for your money?
Nice to know but it’s probably going to be just that in your crank case anyway?

not trying to start an argument but just interested in why? I’ve owned 28 Jeeps and changed oil at pretty proper intervals and great goings! Almost think I’d rather not know??

Thanks, wolfdog

Go Jeep!!!

 

[ShadowsPapa]

3292 miles was the interval on the oil that was changed at 6768 miles on the engine (6798 is a typo in my comparison chart).

First oil change was around 750 miles and next one 3476 miles.

Heck, that thing hasn't even reached peak yet - it's still a child engine.
The real tests will come after 7,000 miles. That's always been when I found increases come in MPG and things start to settle down. Granted, some due to the tables being set, some due to things "loosening up".
I'm curious why the move to 40 from 30? I tend to trust your lines of thinking more than pretty much anyone else here - and am curious why the big jump?

To me, the advantage to the oil filter adapter is a far greater choice in filters. There's a larger world to choose from. (and getting away from "plastic")
If I could standardize on filters across my cars and the JT - I'd be set!

The analysis will be interesting - comparing wear at various oils are used and so on.
I suspect it's your deep dive into the rabbit hole of knowledge more than anything.

 

[Hootbro]

Why?

You have to understand what the data shows and what each element and their levels mean and not just see it as unintelligible raw data.

Elevated elements like Iron show upper valvetrain wear. Aluminum can show piston skirt wear. Copper & Chromium can show both connecting rod bearing and crank bearing wear. Elevated Potassium & Sodium is signs of coolant contamination. Elevated silicone is signs of unfiltered air getting into the intake and I am sure I am missing a few other element points but you get the gist.

Testing for viscosity and fuel dilution rates help with knowing if you are maintaining or dropping below grade for viscosity over a given run. Some oils deal with it better than others.

The whole point that I find value in it, the data can spot the beginning of little problems before they can become bigger problem. Oil analysis caught my then own 2014 JKU when the iron spiked and gave me the data to make a decision if I was to keep it or move on before probable common cam and lifter failure. My last 2022 Gladiator, oil analysis had caught elevated silicone that lead me to find a post filter intake tube was disconnected and letting in unfiltered air.

If one is the ignorance is bliss kind of person and only want to deal with problems once they become catastrophic, then they will probably not find value in such things and that is ok. The whole point of oil analysis is to give data to the person wanting it and that lets them make more informed decision early on. I will also add as a noted point, very rarely will a dealership act on customer supplied oil analysis and is only for the customers information benefit.

I have probably left out a few other salient points but I think you should get the point of why I find the value and my sharing of the information is for other like minded people that may gleam benefit from such information.

 

[Hootbro]

I'm curious why the move to 40 from 30? I tend to trust your lines of thinking more than pretty much anyone else here - and am curious why the big jump?

Think I have mentioned it in other oil threads that I buy the majority of my oil on clearance, rebate and on sale and sometimes that means buying what grade is available. I am confident for other reasons the Pentastar can handle these higher grades and is part of the reason I do periodic oil analysis to see where that takes me.

By posting what I do, I am not making claim others should emulate me or am solving any perceived problem and have said the owners manual recommendations for 0W-20 is sufficient. I accept the risks for what I do.

 

[wolfdog]

Hootbro,

i do understand and liked your explanation. However unlessone had a engine problem and had to argue with thedealer I’m doubting the use is all? As you say they’d not care about your own research but might start them on the hunt!!

I guess? Again great explanation, thanks!

 

[NC_Overland]

Heck, that thing hasn't even reached peak yet - it's still a child engine.
The real tests will come after 7,000 miles. That's always been when I found increases come in MPG and things start to settle down. Granted, some due to the tables being set, some due to things "loosening up".
I'm curious why the move to 40 from 30? I tend to trust your lines of thinking more than pretty much anyone else here - and am curious why the big jump?

To me, the advantage to the oil filter adapter is a far greater choice in filters. There's a larger world to choose from. (and getting away from "plastic")
If I could standardize on filters across my cars and the JT - I'd be set!

The analysis will be interesting - comparing wear at various oils are used and so on.
I suspect it's your deep dive into the rabbit hole of knowledge more than anything.

Mine started getting a lot better mpg after a round trip at 7k miles. Literally 3-4 mpg better.

 

[NC_Overland]

Btw I didn’t know that Quaker State was still around.

 

[Hootbro]

Hootbro,

i do understand and liked your explanation. However unlessone had a engine problem and had to argue with thedealer I’m doubting the use is all? As you say they’d not care about your own research but might start them on the hunt!!

I guess? Again great explanation, thanks!

Everybody has their own take on such things. It is not a I am right and your are wrong discussion because we see it from different angles.

 

[Hootbro]

Btw I didn’t know that Quaker State was still around.

Yeah, it is under the SOPUS umbrella with Pennzoil and Shell. Walmart stocks it pretty regularly.

 

[ShadowsPapa]

Btw I didn’t know that Quaker State was still around.

Yeah, and pretty highly rated in some testing, too.

Mine started getting a lot better mpg after a round trip at 7k miles. Literally 3-4 mpg better.

That was my observation on each 3.6 so far, especially my two prior JTs.

Think I have mentioned it in other oil threads that I buy the majority of my oil on clearance, rebate and on sale and sometimes that means buying what grade is available. I am confident for other reasons the Pentastar can handle these higher grades and is part of the reason I do periodic oil analysis to see where that takes me.

By posting what I do, I am not making claim others should emulate me or am solving and perceived problem and have said the owners manual recommendations for 0W-20 is sufficient. I accept the risks for what I do.

Yeah, I just wanted you to say it again for others not looking at the bazillion other similar threads.

Doesn't matter to anyone one way or another what I think, but I've always liked your explanation and rationale.

 

[NC_Overland]

Yeah, it is under the SOPUS umbrella with Pennzoil and Shell. Walmart stocks it pretty regularly.

Penzoil platinum isn’t bad. I run shell rotella T4 in the Model A.

 

[ShadowsPapa]

in the Model A.

Now there's a stretch in technology!

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