What is the Oil Change Interval? - JeepForum.com
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post #1 of 28 Old 06-17-2021, 01:54 PM Thread Starter
ScottH12
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What is the Oil Change Interval?

I bought a 2021 Grand Cherokee a month ago, and the owners manual basically just says, "change the oil when the car tells you to." My previous vehicle had a oil change indication too, so that's not new, but the manual still gave me a ballpark of 10,000 miles so I knew what to expect. Does anyone know if there's an official recommended interval, or if not, what is the interval you've experienced? Thanks.

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post #2 of 28 Old 06-17-2021, 02:04 PM
TXTrailhawk
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Ditto, and I haven't found anything other than the manual / onboard oil change indicator. Personally, I changed the oil after the first 3k miles and switched to full synthetic. Then changed the oil again at 7k miles, again with synthetic to get rid of the last of the dino oil, allowing the change to synthetic intervals. Both times it was well before the oil change indicator showed a required change.

Now at 12.8k miles, and the Jeep is showing 43% oil life remaining. That may be true depending on the criteria used, but I'll probably change the oil again around 14k and will stick to around 7k intervals even on synthetic. Easy enough to track.

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post #3 of 28 Old 06-17-2021, 02:09 PM
Jd41wk2
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Quote:
Originally Posted by TXTrailhawk View Post
Ditto, and I haven't found anything other than the manual / onboard oil change indicator. Personally, I changed the oil after the first 3k miles and switched to full synthetic. Then changed the oil again at 7k miles, again with synthetic to get rid of the last of the dino oil, allowing the change to synthetic intervals. Both times it was well before the oil change indicator showed a required change.



Now at 12.8k miles, and the Jeep is showing 43% oil life remaining. That may be true depending on the criteria used, but I'll probably change the oil again around 14k and will stick to around 7k intervals even on synthetic. Easy enough to track.



Cheers
It depends if you're mostly highway or city driving. If you're all city and you use synthetic id go every 5-7k miles. If you do mostly highway like me I use Amsoil synthetic ill go around 11-12k miles on a change. If you do a good mixture of both maybe 8-10k miles. The car will usually do what it thinks is best depending on outdoor conditions (dusty, dry environment, etc) and tell you on the screen when to change it. Mine will usually show around 10% at 10k miles and I'll get the message on the screen around 11k ish miles.

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post #4 of 28 Old 06-17-2021, 05:00 PM
Gray203m
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Full synthetic I just do every 10,000km (7,000mi). The oil change reminder never pops up with that setup

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post #5 of 28 Old 06-17-2021, 05:07 PM
2014RedHemiGC
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The oil life monitor uses a sophisticated algorithm that determines the interval by measuring miles, oil & coolant temps, drive cycles, etc. and is generally a good indicator of when to change the oil. It canít measure static time, so oil should be changed no longer than one year regardless of other variables.

I only drive mine about 3,000 miles/yr so itís one year intervals for me.

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post #6 of 28 Old 06-17-2021, 06:09 PM
jas32
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The owner manual (if anyone cares to read it) says to follow the oil change indicator BUT never exceed 10k miles or 12 months. It also mentions 350 hours engine run time (specifically targeted for fleet vehicles).

Of course there are various opinions and never ending arguments about this subject. And some people stupid enough to avoid changing oil when needed. I personally follow what the factory recommends as I know thereís a lot done behind coming up with those recommendations. Obviously it doesnít hurt changing it more often, like using a higher octane fuel even if itís not required.
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post #7 of 28 Old 06-17-2021, 06:38 PM
newtoncd8
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Quote:
Originally Posted by ScottH12 View Post
I bought a 2021 Grand Cherokee a month ago, and the owners manual basically just says, "change the oil when the car tells you to." My previous vehicle had a oil change indication too, so that's not new, but the manual still gave me a ballpark of 10,000 miles so I knew what to expect. Does anyone know if there's an official recommended interval, or if not, what is the interval you've experienced? Thanks.
From the 2021 manual:
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post #8 of 28 Old 06-17-2021, 06:56 PM
Wyo
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Just WOW, The car "tells" you when to change oil.
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post #9 of 28 Old 06-17-2021, 07:13 PM
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Whatever the system is it definitely seems to work, if I am driving off road on trails a lot and "abusing" mine more it definitely prompts me to change oil at less mileage/time!

I think the most it ever went was 9k?
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post #10 of 28 Old 06-18-2021, 03:55 AM
Matt_H
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Originally Posted by jas32 View Post
Obviously it doesnít hurt changing it more often, like using a higher octane fuel even if itís not required.
Using a higher octane fuel CAN hurt when not required....


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post #11 of 28 Old 06-18-2021, 07:11 AM
Gray203m
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Quote:
Originally Posted by Wyo View Post
Just WOW, The car "tells" you when to change oil.
Maybe, just maybe, car manufacturers just want you to bring your vehicle to them for everything, because that's where they make the most money.....
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post #12 of 28 Old 06-18-2021, 12:31 PM
Bilko
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You need to check your owner's manual for the different model years, My 2012 says when the light comes on but don't exceed 8,000miles or 6 months.
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post #13 of 28 Old 06-18-2021, 02:29 PM Thread Starter
ScottH12
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Thanks for all the responses.

In my manual (2021 model year), it doesn't give any numbers, such as "never exceed 10k miles or 12 months", at least not that I could find. I'm curious if anyone who said that language is in the manual is actually referencing a 2021. It seems ridiculous to me that they would remove any mention of a max mileage/time.

My main reason for asking the question to begin with is to avoid having to get it changed in the middle of a vacation or something. If it only needs to be changed every 10K miles, and I'm about to take a 2,000 mile trip with the clock at 6,000, I won't worry about it. But if it's likely to tell me I need to change at 7K or 8K, I'll definitely want to get it done before setting off.

-Scott
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post #14 of 28 Old 06-18-2021, 04:29 PM
newtoncd8
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Originally Posted by ScottH12 View Post
Thanks for all the responses.

In my manual (2021 model year), it doesn't give any numbers, such as "never exceed 10k miles or 12 months", at least not that I could find. I'm curious if anyone who said that language is in the manual is actually referencing a 2021. It seems ridiculous to me that they would remove any mention of a max mileage/time.
Post #7 above was from the 2021 owners manual (specifically p332). See below for the the entire page.
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post #15 of 28 Old 06-18-2021, 04:54 PM
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Originally Posted by Matt_H View Post
Using a higher octane fuel CAN hurt when not required....


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Wow! Really? First time I heard that and I worked 38 years in the auto industry! Definitely CAN hurt your pocketbook though.
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