Hi, I have recently purchased a 2015 Jeep Grand Cherokee with the 5.7 litre hemi V8 with MDS.

The owners manual recommends either a 5w-20 or 5w-30 oil meeting MS-6395. I believe this is predominently to meet californian emission regulations as the SRT and previous 5.7 hemis specified 5w-40.

Your lube guide suggests 5w-20 but I would like maximum protection as these engines are known for seizing lifters and chewing out the camshaft and would prefer to use a 5w-30 for additional protection when hot.

I found a few other oils you make also meet MS-6395 the one I am most interested in is:10 TENTHS RACING 5W-30 (100% PAO & ESTER)

Does this meet all the requirements and is it ok to use on a daily driver?

Thanks

Andrew

Thank Vinnie,

No longer under warranty and Jeep do specify 5w-30 oil can be used as long as it meet MS-6395.

What benefits is there using the 10 Tenths compared to Enviro 5w-30?

Fuel economy is secondary to me. Engine protection is #1 priority.

The extra Zinc in 10 TENTHS RACING 5W-30 (100% PAO & ESTER) I believe will be beneficial to the long life and performance. 

Sorry, I meant ENVIRO+ GF-5 5W-30 (FULL SYN.) which meets MS-6395.

In any case, if the 10 TENTHS RACING 5W-30 (100% PAO & ESTER) contains extra anti wear I think thats what I will go with.

Thanks for your assistance

Thanks guys. Andrew I have the same Jeep as you, bought it recently, only 22,000klms on it. The Hemi tick a worry for me too. I bought a Melling 10452HV oil pump for it, but at hot idle I see 37psi oil pressure. My mechanic reckons not to fit the Melling as yet, being that it is a fair bit of work. I am not sure what oil is in my Jeep, but have bought 10 Tenths 5W-30, will pit that in soon, then recheck the PSI. From all my Googling, I believe Chrysler did increase the size of the oil pumps in 2013/14. Nothing greatly bigger, but an improvement. 

Vinnie, I have been using Penrite all my life, starting in 1976. It is great stuff. 

Thanks again guys, for the information.