Engine Oil
- Thread starter Yeti83
- Start date
Dmac08JK
New member
I used run Royal purple on my 08 jk. I loved it , couldn’t agree more about the smoother ride.
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jknikos
Member
Does it use any oil ?
NFRs2000NYC
Caught the Bug
Search my username and oil if you want an insanely technical answer with lab testing results, etc. If you want the cliffnotes, run whatever synthetic oil is on sale at costco or your local big box store and call it good. Stay away from Royal Purple.
clos0791
New member
OverlanderJK
Resident Smartass
Because his motor call for it. Not every 3.6 is the same. Some are 30w, some 20w and the new are 0w I believe.
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DogHouse
Member
It all depends on where you operate your Jeep. Different oil viscosities work for a different range of temperatures. If you live in Alaska you’ll want a “0” weight oil if you live in the middle of Africa you’ll probably want 15w45 or higher. The higher the viscosity numbers means the oil is more resistant to flow. So if you run “0” weight oil in the middle of Africa it will probably be thinner than water likewise if you run 15w45 in Alaska your starter probably won’t be able to turn the engine over since the oil would be about as thick as molasses.
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clos0791
New member
Thanks. I have a 2015 JKU, I'm going to check my owners manual. I've heard that 5w30 quiets down the engine a bit.
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Strodinator
Caught the Bug
In all vehicles I've owned that have called for that wanted 5w 20 I've put in 5w 30. IMO 5w 20 is just a little too watery for me.
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13_gecko_rubi
Caught the Bug
It was switched I believe in 14 or 15. If you are under warranty I’d run the 20W so as to never have an issue. If not I can easily run the 30W. It was dropped from 30 to 20 for fuel economy. Ya doesn’t make a big difference for any one person but when you ship millions of 3.6s a year and have some crazy EPA numbers to meet every tenth helps lol. Same reason why the tire pressure went up in many vehicles over the years with the same tires on same vehicle.
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Bustedback
Member
What’s the deal with Royal Purple?
Typed by my very own fat fingers on my iPad or iPhone.
JKbrick
Active Member
Mcollins443
New member
I’ve been running Castrol full synthetic 5w30 and a Mopar filter in my 2012 JK since I bought it.
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Beer&Waffles
Member
I've been running amsoil signature series and wix filter for a few years now and love it.
NFRs2000NYC
Caught the Bug
Take a read on some of the old oil threads and you can see the technical answer your question, and have all the info you need about oil, and why royal purple is a subpar product, shown to harm engines, especially those with forced induction. The short answer, it's is a fair bit more expensive than competing oils, and FAR FAR inferior in wear protection, and basically all oil testing. It's not even in the top 30 synthetics, and even some dino's outperform it. They have also been caught in a heap of lies as well as a company.
https://wayalife.com/showthread.php/13284-3-6-synthetic-oil
https://wayalife.com/showthread.php/6985-Mobil-1-extended-performance-oil
https://wayalife.com/showthread.php/11369-Which-oil-do-you-like?highlight=nfrs2000nyc+oil
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