I was not concerned about warranty. Just mainly a question of whether any actual issues from moving to a single oil and a slightly thicker oil than is specified for operating from the arctic circle to Mexico for these vehicles (since I'm closer to Mexico). My 18 Rubicon hasn't been back to the dealer since I bought it. Probably won't go back. I fixed my steering and DW issues myself, as well as visors falling down, axle seal, and some other stuff. I just don't like dealing with them if practical.If they were mine I'd run either Mobil 1 0W30 or 5W30 ESP and call it a day. But I have a friend in a Jeep dealership so using a 30 grade while under warranty wouldn't be an issue, if I were to be called out on it.
One oil For GM/Flex/Jeep?
- Thread starter roaniecowpony
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You having no warranty concerns makes the choice even easier then. I picked what imo is the best of the XOM offerings. I use it in two vehicles which call for 5W20, a 3.7L Jeep Liberty and a 2016 3.6L Wrangler.
The winter rating is not directly tied to the operating viscosity. Independently choose a winter rating that is appropriate for your expected climate.
And again, at operating temperature there is no issue with a thicker oil.
I've been using M1 Ext Perf. It seems to check all the boxes for specs except the Jeep spec. It's also fairly easy to find.
What does the M1 ESP offer over the M1 EP?
Lower ash is one thing. They are different oils for different applications and carry some different approvals and specifications.
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I compared the two spec wise side by side, and consulted a few people on the board here who are a lot more knowledgeable than I am and decided that was the way to go. FTR I'm not interested in longer OCIs. EP is a good choice as well, I like ESP more.
Would M1 Ext Perf 5w30 be a good choice? I'm looking at it because of availability and price. They seem to stock it in the common chain autoparts stores as well as Walmart, which is a plus, but not a requirement. M1 ESP seems to be less common and about twice the cost.
Absolutely!
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Yes, there is. If the manufacturer specifies 5W30 for your driving conditions... use that. If the manufacturer specifies 5W20... use that. If you want to use a different weight oil, that decision should be made for each engine design uniquely, especially those with oil activated valve trains and the like, and there are very few reasons why you'd conclude you should do so in the first place (on a healthy engine), examples being: (1) it's a race/track car, (2) you live in extreme cold or heat, (3) the vehicle is used for max weight towing regularly.
You literally have to buy/store a couple different types of oil in your case. That's easy. This entire discussion is more complicated than that.
They both have a 5W winter rating. How are they different at that "extreme cold"?
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I'm speaking generally. And they wouldn't be. Extreme cold is not the "upper midwest" though. Unless you're in Minnesota... that place is cold.
My point is... it's a couple different oil bottles you have to get. It's not solving world hunger.
Guys, I live in socal. The extreme cold is not the end of the temperature spectrum I ever see. It's the extreme heat that my vehicles regularly operate in. The truck tows the Jeep in the heat, the Jeep drives slowly in the heat while off-road.
EP 5w30 will be fine.
Went out to the garage to check what I had. Looks like I made a decision on the GMC to move to 5w30 M1 EP last time I changed the oil about a year ago.
If I was to choice just one, I would go with 5w30 (brand of your choice) because you are in SoCal
Note that I did say, "originally".
But, please tell me what has changed in the engine construction or oiling system?
Different cams, newer oil delivery to vvt, egr. These are some differences.
PUG — the Pentastar V6 engine upgrade
PUG — the Pentastar V6 engine upgrade: what it’s all about
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