0w30 in the PentaStar

[Jimmy_Russells]

Originally Posted by Jimmy_Russells
My wife has a 2014 Wrangler with 60k on it, we bought it new. I have always run the 5w20 and it does have a lot of valvetrain clack at cold start. I do notice it is quieter using Quaker State Ultimate Durability or Castrol EDGE compared to Pennzoil Platinum, but in terms of longevity I doubt it makes really any difference. I just follow the OLM and change around 10-15% remaining which is usually about 6.5 - 7k miles.



Hey everyone, I don't mean to hijack the thread but thought this would be better than starting a new one. I came across a good deal on Idemitsu 5w20 through work, for a synthetic this stuff is cheap basically the same price as conventional. Everything I see online shows it mainly in Japanese applications for obvious reasons, wondering if there is any concern with running this in my wife's 3.6 Pentastar. The Jeep is not in warranty any longer so MS-6395 is not a big concern, the Idemitsu is SN/GL-5.

Thanks

 

[StevieC]

I'm running 5w20 in my Father in laws Pentastar, although it's not that brand it runs fine and its quiet.

I would run it no problem...

Also no worries, my thread doesn't feel hijacked.

 

[Jimmy_Russells]

I have always run 5w20 in this one now at 61k. I know Idemitsu is a respected brand I just wasn't sure if there was something bad about running it in a non-Japanese vehicle since it seems 95% of what you find it is used in those. I guess if it is SN approved it will be good to go.

 

[StevieC]

It's fine for other brands of vehicles where it meets the vehicles specification for oil. That said the PentaStar isn't fussy at all. My dad's which is a 2012 and was my fleet vehicle was run on Castrol GTX Conventional most of its life and now that he has it, it's whatever is on sale in the conventional variety. It has over 300K KM (180K miles) on it now and doesn't use any oil and runs just as good as it did in 2012. His calls for 5w30 and mine calls for 5w20 as they changed the viscosity throughout the years and in the later ones revised the oil pump and heads slightly.

IMO the updated PentaStars are probably one of the best engines out there in terms of durability and reliability. Your 2014 is one of the updated ones. Lots of good info here: https://www.pentastars.com/engines/repairs.php

 

[StevieC]

Just stumbled across this used oil analysis, I wouldn't mind trying the 25K Mile claim in the PentaStar if the used oil analysis for mine supports it... Interesting comments from Blackstone: