2018 Compass is eating oil - Jeep Compass Forum
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post #1 of 19 Unread 09-15-2019, 03:49 PM Thread Starter
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2018 Compass is eating oil

Hi guys.

It appears I'm one of the lucky few thats Compass goes through oil like it's no ones business. I receive the "low oil pressure" alert on the dash almost every 3000 miles. My question: how much oil needs to be consumed for the car to throw this alert? I will start carrying around a QT of synthetic oil in the meantime.

Thanks, all.

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post #2 of 19 Unread 09-15-2019, 07:23 PM
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Your dipstick will tell you

Quote:
Originally Posted by texasjeep34 View Post
Hi guys.

It appears I'm one of the lucky few thats Compass goes through oil like it's no ones business. I receive the "low oil pressure" alert on the dash almost every 3000 miles. My question: how much oil needs to be consumed for the car to throw this alert? I will start carrying around a QT of synthetic oil in the meantime.

Thanks, all.
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post #3 of 19 Unread 09-15-2019, 08:28 PM Thread Starter
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Originally Posted by 84z28 View Post
Your dipstick will tell you
In no way, shape, or form did you answer my question. I've seen this post several times on the forum but no one ever asked how much actually needs to be consumed to throw this alert. My intervals where this alert pops up varies greatly. So no, my dipstick would not be an accurate measure.

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post #4 of 19 Unread 09-15-2019, 10:21 PM
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Quote:
Originally Posted by texasjeep34 View Post
In no way, shape, or form did you answer my question. I've seen this post several times on the forum but no one ever asked how much actually needs to be consumed to throw this alert. My intervals where this alert pops up varies greatly. So no, my dipstick would not be an accurate measure.

Posting on this site does not address your situation. Perhaps you should check your oil, maintain a safe level and/or visit your dealer. It's your problem, do something or destroy the engine. The world, this site, Jeep ... owes you nothing.
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post #5 of 19 Unread 09-15-2019, 10:59 PM
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I believe if you're down 2 quarts it will activate the kill switch. Not sure about the low pressure indicator. In fact I didn't know we had a low pressure indicator. We do have an oil temperature gauge which is a pretty redundant (and useless) invention. From what I've read on this site, the engine just shuts down if the pressure is low, and many complain about where they get dropped -- left lane of the expressway, middle of an intersection, miles away from a store, etc. Frankly, a low oil pressure indicator is the last thing you want to see. That pretty well indicates the damage is done. Don't expect sympathy from the manufacturer, a judge, jury, or arbiter if that's ever come on. They'll all agree you should have checked the oil level yourself. The dipstick is the only genuinely reliable indicator of your oil level.

I've posted elsewhere on this site that the oil consumption on my 2018 Compass began at 1000/qt and gradually improved to 3000/qt by 30,000 miles. Knowing that any new engine will use oil I started checking at 1000 miles and was amazed that the oil was so low. I expected some consumption, but that was a LOT. So as I said, it gradually improved to where it was acceptable for a very old engine, not a brand new engine. I just learned to carry a couple extra quarts with me.

My 2018 Compass was replaced with a 2019 Compass that uses hardly any oil: about 5000/qt which is where I'm at now, and about what I'd expect from a new engine. I expect my consumption will trail off to no consumption by 10,000 miles. That's what should happen; I'll post if it doesn't.

I understand your problem, in fact I had it. However, its a nuisance, but neither the end of the world, nor the end of your Compass -- you're just going to have to befriend that dipstick. Worst case scenario, you have to buy a couple cases of oil over the life of the vehicle. In the long term perspective, that's not a lot of money. Agreed, it shouldn't be consuming so much, but also remember its Congress who voted for the CAFE standards, so if you're really upset about this, write to your reps in Washington, not FCA. The manufacturers are just coping with government regulations. Compasses are not the only vehicles with oil consumption problems, other reputable manufacturers have the same issue: they must push the margin of error so far in the direction of fuel economy that other problems creep in. Like I said, write your politicians.
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post #6 of 19 Unread 09-15-2019, 11:15 PM
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If it was me I'd be checking my oil on a new car every 1000 miles or any new motor for that matter. If you were checking your dipstick you could see the amount consumed every 1000 miles. By that gauge of consumption you can assume how low you are at 3000 miles when the indicator illuminated, an educated guess would be if there isnt any oil on the dipstick you're at least 2 quarts low out of the 2.4l 5.5 quart capacity. If you're waiting for your Jeep to tell you when you're out of oil you might want to consider mass transit because vehicle ownership might not be for you

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Originally Posted by texasjeep34 View Post
In no way, shape, or form did you answer my question. I've seen this post several times on the forum but no one ever asked how much actually needs to be consumed to throw this alert. My intervals where this alert pops up varies greatly. So no, my dipstick would not be an accurate measure.
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post #7 of 19 Unread 09-16-2019, 11:35 PM
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check your oil regularly. do not wait for low oil pressure light because low oil pressure is indicative of something serious.
you can try using 5w30 or 10w30. it will cause no harm.
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post #8 of 19 Unread 09-17-2019, 12:37 AM
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Originally Posted by jeepney_driver View Post
check your oil regularly. do not wait for low oil pressure light because low oil pressure is indicative of something serious.
you can try using 5w30 or 10w30. it will cause no harm.
He could probably get away with 5w-20, but 10w-30 is probably too thick. The oil also does hydraulics, its more than just a lubricant. In the 2nd Generation Compass the oil is sprayed not squirted so it has to be thin enough to atomize. Gook will not leak, but it won't get to the bearings either. That would be unfortunate.

Best case scenario was my 2018 that seemed to come around after 30,000 miles. I drive a lot so it "only" took about a year. I did add a quart of 5w20 once since it was all I had and better than nothing, but I wouldn't run with that on a regular basis. Once I got to a store I topped it off with 0w-20 and continued to refill it with the right stuff when needed.

Last edited by Jasmine; 09-17-2019 at 12:41 AM.
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post #9 of 19 Unread 09-17-2019, 02:21 PM
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Jeep will definitely tear your warranty to pieces if they find out you poured 10w-30 in there...

I've said this same thing on all the other "Blahhhh my new Compass uses a lot of oiiillllllll" threads, but they keep popping up so I'll say it again:

Don't: Pour anything goofy into the motor to try to make it stop. That includes other non-recommended weights of oils. It's not an oil viscosity problem, and no magic motor potions are going to help and in some cases they might hurt a lot.

Do: Try to get your piston rings to seat well. There is a very limited span of time early in a motor's life to run the motor under a sustained moderate load to help the rings wear into the cylinder walls and make the best seal they can. If the cylinder walls glaze smooth without good combustion pressure working the rings into them the motor will never have the compression it should and will tend to burn more oil and soil the oil faster. You can google for more info but basically pulling a heavy trailer or loading down the car to max weight and doing some steady, moderate pulls is supposed to bring this about. Don't lug the motor but use manual shifting to keep it from downshifting and revving up. My brother's 2000 lb boat seemed to do the trick for me (or I was just lucky).

At 34k I'm using at the very most 1 qt/5000 miles, and thats only if I've been driving those 5000 miles very aggressively with a lot of high-revving (sadly its the only way to make the car get out of its own way and keep up with traffic, as you know). If I've been driving more moderately the consumption is maybe half of that.

Its tough to track accurately because there is quite a bit of thermal expansion in the oil so unless you check your oil parked in the exact same spot with the motor at the same temperature every time it will fool you by as much as 1/5 of the hash marks on the stick or more, watch out for that.

From what I understand this engine is designed to sacrifice some oil in trade for reduced internal friction, which contributes to more power and efficiency. The tolerances seem to vary a bit wildly on these bulk-factory produced motors unfortunately. Getting one that is close to the edge of spec (for piston ring tolerance) and then driving it a lot of high RPM bursts with no load/car empty is a recipe for making a motor that consumes oil quickly.

This is all just best-guess theory at this point. I would love for everyone to do a compression test and bring their numbers together alone with their consumption reports, we could build evidence for the theory, until then you have to bear in mind none of us have torn down one of these new motors to confirm any of this, BUT, if the oil is not leaking out then its getting burned, and that pretty much always goes back to piston ring tolerance or the PCV system, and I don't know if these motors even have PCV.
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post #10 of 19 Unread 09-17-2019, 11:07 PM
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Quote:
Originally Posted by arudlang View Post

Do: Try to get your piston rings to seat well. There is a very limited span of time early in a motor's life to run the motor under a sustained moderate load to help the rings wear into the cylinder walls and make the best seal they can. If the cylinder walls glaze smooth without good combustion pressure working the rings into them the motor will never have the compression it should and will tend to burn more oil and soil the oil faster. You can google for more info but basically pulling a heavy trailer or loading down the car to max weight and doing some steady, moderate pulls is supposed to bring this about. Don't lug the motor but use manual shifting to keep it from downshifting and revving up. My brother's 2000 lb boat seemed to do the trick for me (or I was just lucky).
Nah, the correct and responsible thing to do is to NEVER check the oil level. Wait until low oil warning to come on, let this same thing happen multiple times and than come here and complain.

I have said this many times, but if you go back and look at all the posts that complain about severe oil consumption, they all have one thing in common. Owner never checked the oil level until low oil pressure warning kicked in, and sometimes more than once.

IMO if you get the low oil warning and drive the car that way even once, enough damage will be done to permanently cause oil consumption. The engine simply doesn't have any tolerance withstand extra wear.
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post #11 of 19 Unread Yesterday, 02:31 PM
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The reports we hear on here are only going to get worse and worse, you know people are going to be desperate and trying hoaky things like stop-leak in their oil and then there will be a whole crop of engines screwed up even worse by owner, but they won't admit to using the additives most of them.

I don't know, one way or another I seem to have gotten lucky enough mine only sips the tiniest bit as it was probably intended to do. Part of me loves getting new cars every few years and there are all kinds of cool options out there, then again part of me loves that this is essentially the last of the cars we will ever be able to buy without a bunch of safety BS built in, this car has all the safety tech I can stand and I'm not interested in lane keeping, camera/computer combos that brake for me or any of that other nonsense. When I'm old and my reaction time is shot then I'll happily take some driver aids, but until I am not capable of controlling the vehicle myself I don't want a package of "assistive" nannies to fight with. I don't need a blind spot indicator, I am capable of looking with my own two eyes. I don't want the car to try to brake for me if deer are crossing the road, sometimes braking is the wrong thing to do. If I screw up anywhere along the line, well thats on me and I can own up and be responsible for myself. I detest that we are making smarter cars for stupider people rather than actively trying to culture better, more attentive drivers. The only pass I give is to elderly people who would still like to remain independently mobile, but we're going to be running the ever-crowded roads with an entire generation of young idiots who will learn to let the car do most of the work.

OK thats enough ranting for now, better go refill my coffee!
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post #12 of 19 Unread Yesterday, 08:52 PM Thread Starter
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Originally Posted by lundy View Post
Posting on this site does not address your situation. Perhaps you should check your oil, maintain a safe level and/or visit your dealer. It's your problem, do something or destroy the engine. The world, this site, Jeep ... owes you nothing.
What a miracle. Jasmine answered my question!

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post #13 of 19 Unread Yesterday, 09:02 PM Thread Starter
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Nah, the correct and responsible thing to do is to NEVER check the oil level. Wait until low oil warning to come on, let this same thing happen multiple times and than come here and complain.

I have said this many times, but if you go back and look at all the posts that complain about severe oil consumption, they all have one thing in common. Owner never checked the oil level until low oil pressure warning kicked in, and sometimes more than once.

IMO if you get the low oil warning and drive the car that way even once, enough damage will be done to permanently cause oil consumption. The engine simply doesn't have any tolerance withstand extra wear.
I do check my oil. My issue was the low oil pressure alert appeared at widely different oil levels. However, I decided not to deal with the monstrosity that is known as the Jeep Compass and traded it in yesterday before something exploded at will.

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post #14 of 19 Unread Yesterday, 10:21 PM
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What a miracle. Jasmine answered my question!

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Anytime, my friend.
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post #15 of 19 Unread Yesterday, 11:03 PM
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Quote:
Originally Posted by texasjeep34 View Post
In no way, shape, or form did you answer my question. I've seen this post several times on the forum but no one ever asked how much actually needs to be consumed to throw this alert. My intervals where this alert pops up varies greatly. So no, my dipstick would not be an accurate measure.
Quote:
Originally Posted by texasjeep34 View Post
What a miracle. Jasmine answered my question!

asshat
Cute post! Go ahead and take the advice from a stranger on the internet and use the wrong oil. Glad you got your answer. Do you work at Starbucks? If so ask the night mgr.
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post #16 of 19 Unread Yesterday, 11:07 PM
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Originally Posted by Jasmine View Post
He could probably get away with 5w-20, but 10w-30 is probably too thick. The oil also does hydraulics, its more than just a lubricant. In the 2nd Generation Compass the oil is sprayed not squirted so it has to be thin enough to atomize. Gook will not leak, but it won't get to the bearings either. That would be unfortunate.

Best case scenario was my 2018 that seemed to come around after 30,000 miles. I drive a lot so it "only" took about a year. I did add a quart of 5w20 once since it was all I had and better than nothing, but I wouldn't run with that on a regular basis. Once I got to a store I topped it off with 0w-20 and continued to refill it with the right stuff when needed.
Bad advice.
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post #17 of 19 Unread Yesterday, 11:35 PM
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Bad advice.
Are you gonna run 10w-30 in yours? Lemme know how its doing in 10,000 miles. I think you'll be sorry. As @arudlang said, they won't honor the warranty. At least if you keep the spec oil in there you've got a leg to stand on.

Or were you reacting to my comment about 5w-20? I'm not recommending that, just saying its the closest thing to OEM. I added a quart once because it was so low I had to add something and it was all I had. Even that wasn't enough to fill, so she got a drink of 0w-20 before the day was over. No harm done to mine and as previously stated the oil consumption gradually decreased -- not to where I would have liked it, but to where I could live with it.

You'd do best to stick with OEM, especially if you really want to make an issue out of your problem. They can tell if its been run with the wrong oil and your claim will go nowhere.
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post #18 of 19 Unread Today, 12:59 AM
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My Compass does not use oil, you should stop recommending using other specs. Closest to OEM?!

Your speculation regarding what oil may or may not work is nonsense, perhaps you don't realize that.

Post counts do NOT lend credibility.

Writing about platforms, other engines as you often do, does not help anyone.

You put the wrong oil in an engine with known problems, and post about it. Not wise.
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post #19 of 19 Unread Today, 01:55 AM
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Quote:
Originally Posted by texasjeep34 View Post
I do check my oil. My issue was the low oil pressure alert appeared at widely different oil levels. However, I decided not to deal with the monstrosity that is known as the Jeep Compass and traded it in yesterday before something exploded at will.
If the oil level is kept within the crosshatch markings on the dipstick you should NOT be getting a low oil pressure light unless your engine has other issues.

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