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Old 01-16-2020, 11:52 PM
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Engine Oil

Hello Jeepers, I'm curious as to what everyones favorite synthetic oil is!!?? I know some say it doesn't matter, so with that, all smart ass comments are welcome 😁! I've been considering Royal Purple or Castrol titanium edge.

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Old 01-17-2020, 12:46 AM   #2
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A good full syn 5-20 or 5-30. The ones you listed are fine. There are many threads on this as you know with lots of info in them.

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Old 01-17-2020, 04:08 AM   #3
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Redline 5w-30
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Old 01-17-2020, 05:32 AM   #4
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Mobil 1 and Pennzoil synthetic oil. I'm currently using Mobil 1 ESP 0w30 and it is quickly becoming my favorite oil.
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Old 01-17-2020, 06:20 AM   #5
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I use Mobil 1 Extended Performance 5w-30, and Mobil 1 EP oil filter.
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Old 01-17-2020, 07:47 AM   #6
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I run Schaeffer's 5-30.....
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Old 01-17-2020, 01:10 PM   #7
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Anyone use Kirkland 5W-20 or 5W-30 Full Synthetic Motor Oil? On sale $24.99 5-quart, 2-pack shipping included.

Made by Warren Oil Co.

I haven't used it.
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Old 01-18-2020, 01:50 AM
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Mobil 1 and Pennzoil synthetic oil. I'm currently using Mobil 1 ESP 0w30 and it is quickly becoming my favorite oil.
What improvements have you noticed?
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Old 01-18-2020, 04:19 AM   #9
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What improvements have you noticed?
I had good results with Pennzoil Ultra 5W30, I would be able to go for about 3 weeks of not using my Jeep with no ticking at start up. Beyond that there would be a tick for about a second or so. With this oil I have gone a lot longer than that with zero start up noise. Overall my engine is very quiet, I noticed with this oil while running the Jeep in the garage, where the acoustics are better than running it outside, it is very quiet and smooth. While only observations with no science, I know my vehicles, and when something is working well, or there is the start of a problem. The oil is a Euro synthetic, it is not cheap, and it tends to be on the "thicker" side of the grade. That could be a contributing factor to my observations.
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Old 01-18-2020, 09:03 AM   #10
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I had good results with Pennzoil Ultra 5W30, I would be able to go for about 3 weeks of not using my Jeep with no ticking at start up. Beyond that there would be a tick for about a second or so. With this oil I have gone a lot longer than that with zero start up noise. Overall my engine is very quiet, I noticed with this oil while running the Jeep in the garage, where the acoustics are better than running it outside, it is very quiet and smooth. While only observations with no science, I know my vehicles, and when something is working well, or there is the start of a problem. The oil is a Euro synthetic, it is not cheap, and it tends to be on the "thicker" side of the grade. That could be a contributing factor to my observations.
I think I will try M1 EP 5W30 a try. I am currently Running Amsoil SS 5W20, I have one change of Amsoil SS 5W30 ready, then will grab M1 EP.
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Old 01-18-2020, 09:30 AM   #11
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I have been running various 0w-20 synthetics. I was running 5w-20 and I would have a dry start below 30F. I switched to 0w-20 and I might get a little startup ticking when it's in the single digits.
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Old 01-19-2020, 05:48 AM   #12
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I think I will try M1 EP 5W30 a try. I am currently Running Amsoil SS 5W20, I have one change of Amsoil SS 5W30 ready, then will grab M1 EP.
Mobil 1 EP is a good choice too, it is easier to find and cheaper. Have you ever run a 30 grade in it yet?
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Old 01-19-2020, 06:23 AM   #13
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I found this to be a VERY interesting read about Motor oil, may change your mind about what you are using.


https://540ratblog.wordpress.com/201...-test-ranking/
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Old 01-19-2020, 10:53 AM   #14
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Mobil 1 EP is a good choice too, it is easier to find and cheaper. Have you ever run a 30 grade in it yet?
I had a stockpile of 5W20 from when I owned my Hemi Ram. The oil in my JK is the last of it, will run 5W30 from now on.
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Old 01-19-2020, 02:16 PM   #15
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I found this to be a VERY interesting read about Motor oil, may change your mind about what you are using.


https://540ratblog.wordpress.com/201...-test-ranking/
Wow.That made my eyes hurt.Good info.
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Old 01-19-2020, 02:29 PM   #16
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If under warranty, might want to ensure the oil used meets MS6395 specifications for Jeep.
Some light reading: https://www.bobistheoilguy.com/motor-oil-106/

Why I’ll not use Mobil1 again: https://www.wranglerforum.com/f274/2...l#post34479023
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Old 01-19-2020, 02:32 PM   #17
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Pennzoil Ultra Platinum in the 5w30 flavor. It's cheap ($20 for 5qts), and they usually have a $10 mail in rebate going on for the 5qt, and $5 for the 1qt - knocking my expense pretty well.
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Old 01-19-2020, 02:43 PM   #18
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Pennzoil Ultra Platinum in the 5w30 flavor. It's cheap ($20 for 5qts), and they usually have a $10 mail in rebate going on for the 5qt, and $5 for the 1qt - knocking my expense pretty well.
PUP is $59 up here, $31 On sale. Good stuff for sure.
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Old 01-19-2020, 02:50 PM   #19
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I found this to be a VERY interesting read about Motor oil, may change your mind about what you are using.


https://540ratblog.wordpress.com/201...-test-ranking/
Good lord that guy's verbose. So over the top I couldn't help but throw it in a word count - he hits 22,755 words before the "Wear Protection Ranking List" (a phrase typed out in full 56 times). The full article has 143,882 words… so at a very standard reading rate of 130 words per minute it would take more than 18 hours to read his blog post straight through.

I can only imagine how long it took to write.

Gergg, care to give us the executive summary?
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Old 01-19-2020, 03:31 PM   #20
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I used synthetic Castrol for many years just becouse I had a good source - "bulk price" directly from importer. If not the low price would probably chose Motul or M1.
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Old 01-19-2020, 04:49 PM   #21
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Good lord that guy's verbose. So over the top I couldn't help but throw it in a word count - he hits 22,755 words before the "Wear Protection Ranking List" (a phrase typed out in full 56 times). The full article has 143,882 words… so at a very standard reading rate of 130 words per minute it would take more than 18 hours to read his blog post straight through.

I can only imagine how long it took to write.

Gergg, care to give us the executive summary?
Funny,I did do alot of selective/speed reading.
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Old 01-19-2020, 05:48 PM   #22
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Good lord that guy's verbose. So over the top I couldn't help but throw it in a word count - he hits 22,755 words before the "Wear Protection Ranking List" (a phrase typed out in full 56 times). The full article has 143,882 words… so at a very standard reading rate of 130 words per minute it would take more than 18 hours to read his blog post straight through.

I can only imagine how long it took to write.

Gergg, care to give us the executive summary?

LOL....I just went to the "Wear Protection Ranking" after 30 minutes of reading.....Amsoil is great, seems like there is a reason why it is expensive. All of the name brands(Mobil 1, Valvoline, Quaker State, Pennzoil have models that performed great, and some that did not). Also seemed like a few additives mentioned might actually help wear, but probably unnecessary(My opinion based on my understanding of the report). Just another piece of data that I thought was worthy of reviewing.
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Old 01-19-2020, 09:02 PM   #23
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With that thing we should never need another oil thread. Just refer people to that.
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Old 01-20-2020, 12:37 AM   #24
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Hello Jeepers, I'm curious as to what everyones favorite synthetic oil is!!?? I know some say it doesn't matter, so with that, all smart ass comments are welcome 😁! I've been considering Royal Purple or Castrol titanium edge.
There are dozens (hundreds?) of oil threads already. Whatever oil you decide to use, remember that Mobil 1 is not Chrysler MS-6395 certified and if you're still under warranty it can give the dealer reason to deny an engine related warranty claim if it ever comes up.

Probably nothing wrong with the oil but are you willing to take them to court and have your Jeep sitting for 1-2 months while the lawyers battle it out while you pay for a rental vehicle all that time? It specifically says in your warranty guide that consequences resulting from the use of non-recommended fluids are not covered by the warranty. Your choice.
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Old 01-20-2020, 02:43 AM   #25
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Mobil 1 5W-30. Don't care if it is not Chrysler certified. That simply means Mobil didn't want to cough up the money to Chrysler. Many high-end vehicles call for Mobil 1, so let's not pretend that Mobil 1 isn't actually good enough for a Jeep.


Also, my warranty is long gone, so I don't care about the warranty.

(I used to use Pennzoil Ultra Platinum, but it was difficult to obtain, became costly, and so I decided to swap to Mobil 1 which is readily available and I can buy it for a great price locally.)
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Old 01-20-2020, 06:22 AM   #26
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I had a stockpile of 5W20 from when I owned my Hemi Ram. The oil in my JK is the last of it, will run 5W30 from now on.
I think you're going to be pleasantly surprised!
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Old 01-20-2020, 05:01 PM
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I had good results with Pennzoil Ultra 5W30, I would be able to go for about 3 weeks of not using my Jeep with no ticking at start up. Beyond that there would be a tick for about a second or so. With this oil I have gone a lot longer than that with zero start up noise. Overall my engine is very quiet, I noticed with this oil while running the Jeep in the garage, where the acoustics are better than running it outside, it is very quiet and smooth. While only observations with no science, I know my vehicles, and when something is working well, or there is the start of a problem. The oil is a Euro synthetic, it is not cheap, and it tends to be on the "thicker" side of the grade. That could be a contributing factor to my observations.
Do you think 5w30 is better year-round? I have heard using 5w30 in hotter temps is better while 5w-20 might be better for colder temps, ever heard this or complete garbage?
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Old 01-20-2020, 05:01 PM   #28
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I think you're going to be pleasantly surprised!
That is a good thing, probably a huge difference overall between 20vs 30.
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Old 01-20-2020, 05:18 PM   #29
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Mobil 1 and Pennzoil synthetic oil. I'm currently using Mobil 1 ESP 0w30 and it is quickly becoming my favorite oil.
Is that MS 6395 certified?
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Old 01-20-2020, 11:29 PM   #30
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Do you think 5w30 is better year-round? I have heard using 5w30 in hotter temps is better while 5w-20 might be better for colder temps, ever heard this or complete garbage?
The 5W in any 5w20 is the same as a 5w30(any brand) at -25F . By the way any 5W/xx oil is good to -25F even in a 5w50 oil. As the oil warms up the 5w30 will be a little thicker than a 5w20 but only after the oil warms up. That's why I have no second thoughts about using M1 0w40 in my '13 JK.

If all I did was cruise down the freeway(easiest miles you can get) I might run a 5w20 but I don't just drive my Jeep on the road. Going slow(low range) climbing trails in summer heat puts a lot of heat into the oil. The hotter the oil gets the thinner it gets, weather its a 20w or a 60w oil. When it gets to hot(or to thin) the boundary layer loses it strength and you can wipe out the bearings or piston skirts/cyl walls and cause other problems with a engine.

I run M1 0w40 because its barely into the 40w range when new and it sheers down to a mid 30w fairly quick and that is what I want in my '13 Jeep. Have 90k miles on mine with most of them with M1 0w40

Rod
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