I just delivery of a new JGCL 3.6. today.... I noticed its now 0w 20 vs 5w 20 in the older penstar engines.....when did FCA change it. I was told that they think it has syn Penzoil from the factory.....If true I will stay with the Pennzoil syn if thats what they come with?
Jeep Grand Cherokee
- Thread starter gmh101358
- Start date
OVERKILL
$100 Site Donor 2021
Very recently, the change that is, but I ran 0w-20 in ours when we had it. Pennzoil Platinum is a good oil, if you can get it at a reasonable price and it is readily available I see no reason not to stick with it.
It could also come from the factory with Pennzoil Gold synthetic blend 0W-20.
2016 when they introduced the PUG V6 to the Durango and Grand Cherokee is when they switched to 0w20.
OVERKILL
$100 Site Donor 2021
IIRC, my wife's 2016 Durango still called for 5w-20, wonder if it was a half way through the year kind of thing?
Exactly. I'd be using 5w-30, the original specification. No documented oiling changes since it was introduced. The PUG modification is the intake.
Everyone say no changes made but there was one big change. The oil change interval went up from 8k to 10k as well as programming change to OLM. Does that mean 5w20 has a better base well Chrysler seems to think that by there actions. Also one change I forgotten was the change on newer V6 went to 5qt down from 6qt.
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To follow up my CAFE comment -- interesting article:
cen.acs.org
Engine oil becomes critical as automakers look to boost gas mileage
New lubricant chemistry turns out to be one of the most cost-effective ways to increase cars’ fuel economy
cen.acs.org
Pennzoil Professional MS 0W-20
According to Shell it's relabeled Quaker State Full Synthetic SP GF-6 (ie recent name change from Ultimate Durability).
A post exist somewhere on this forum with a link to information on Shell's SP GF-6 changes including information on this oil.
Sorry I can't find it to link.
Anyone with stronger Google-foo?
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Both my '15 GC and '17 Promaster are 5w-20.