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Old 03-16-2011, 03:14 AM   #1 (permalink)
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Default Too high engine oil consumption?

Hi all, I purchased a Mazda 6 2010 I gt last month and I have put abt 2.9k on it( long distance trip between OH to NY) since it is last year model and I really don't know how long did the dealer kept it. I changed oil right after I got the car( abt 200 miles), full mob1 5w-20 in walmart
4.3 qt( the manual says 4.4 or 4.5, cant remember....) and on the inspection report, they told me it was half qt low.

and yesterday I did another oil change since I will drive to Chicago for my spring break. And I was told the oil level... 1 qt low. So it sounds like the engine took 0.7-1 qt oil on first 2.7k.... That is close to the high mileage Mazda 6!
I took the car to dealer. They said it is normal because the car was still in "break-in period" They said the new car usually takes around 1 qt engine oil every 3k. Actually I didn't really believe what they said. My gf has a new Mazda 3 2010 I touring and never had the similar problem. I called the dealer in other states and they also said that was normal and asked me "keep an eye on it". I returned to my dealer and asked them to do the multi point inspection. They didn't find any big leakage. They only found little "oil coat" and dirt on my k&n oil filter. I believe that is the engine oil on technician's hands when he put the filter on. So they wiped and tight the filter.
My rpm is around 3000 on 80 mph and 31 -34mpg on highway.
I searched online and i found it may because of engine pressure switch failure? So I just want to know if the dealer bs or not....

Thanks a lot!
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Old 03-16-2011, 01:02 PM   #2 (permalink)
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Originally Posted by Bmh1234567 View Post
I returned to my dealer and asked them to do the multi point inspection. They didn't find any big leakage. They only found little "oil coat" and dirt on my k&n oil filter. I believe that is the engine oil on technician's hands when he put the filter on. So they wiped and tight the filter.
Was the filter loose? If it was a bit that may explain it.
Hard to say, break-in period? Maybe?
Keep an eye on it. Maybe you should change the PCV valve.
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Old 03-16-2011, 01:47 PM   #3 (permalink)
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Was the filter loose? If it was a bit that may explain it.
Hard to say, break-in period? Maybe?
Keep an eye on it. Maybe you should change the PCV valve.
Thanks for your reply
Last time, I used the oil filter provided from Walmart (I used the ones from them on my gf's 3...No problem on those)
I hope that is only because of the oil filter small leakage. As far as they swiped and tight the filter. It will be easy for us to observe if any new leakage occurs.
I really hope that's not about PCV valve!!! lol
Thanks for your reply again, have a good day.
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Old 03-16-2011, 01:48 PM   #4 (permalink)
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I mean last time I used Walmart's filter and this time I used K&N..
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Old 03-16-2011, 04:30 PM   #5 (permalink)
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any time i drove any of my cars on the highway they tend to consume oil, 1/2 quart on a long 700 miles highway trip (75-100mph) was kinds normal, switch to a full synth with few hunderd miles on the car maybe debatable... 1/2 quart low seems OK but 1 quart is kinda low.

Keep en eye on it, my CX9 took almost a quart in 1500 miles of mostly highway driving and very cold morning starts (0 F few mornings).... than I got back to warm Florida and driving no faster than 75-80miles and engine consumed barely 1/2 in 4k miles....

Keep en eye on it every 1000 miles , top off if needed , my wife's 2.5 liter mazda 3 likes to keep the oil at around 3/4 full on the dip stick....

If it gets worse or does not improve adress with dealer
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Old 03-16-2011, 09:42 PM   #6 (permalink)
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any time i drove any of my cars on the highway they tend to consume oil, 1/2 quart on a long 700 miles highway trip (75-100mph) was kinds normal, switch to a full synth with few hunderd miles on the car maybe debatable... 1/2 quart low seems OK but 1 quart is kinda low.

Keep en eye on it, my CX9 took almost a quart in 1500 miles of mostly highway driving and very cold morning starts (0 F few mornings).... than I got back to warm Florida and driving no faster than 75-80miles and engine consumed barely 1/2 in 4k miles....

Keep en eye on it every 1000 miles , top off if needed , my wife's 2.5 liter mazda 3 likes to keep the oil at around 3/4 full on the dip stick....

If it gets worse or does not improve adress with dealer
Thanks for your reply I am really confused on what dealer said about "break-in period". I thought new generation car doesn't need that lol
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Old 03-16-2011, 10:54 PM   #7 (permalink)
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1000-1500 is within mazda spec.

No biggie to them. Just keep an eye on it as things go.
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Old 03-16-2011, 11:25 PM   #8 (permalink)
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Originally Posted by Bmh1234567 View Post
Hi all, I purchased a Mazda 6 2010 I gt last month and I have put abt 2.9k on it( long distance trip between OH to NY) since it is last year model and I really don't know how long did the dealer kept it. I changed oil right after I got the car( abt 200 miles), full mob1 5w-20 in walmart
4.3 qt( the manual says 4.4 or 4.5, cant remember....) and on the inspection report, they told me it was half qt low.

and yesterday I did another oil change since I will drive to Chicago for my spring break. And I was told the oil level... 1 qt low. So it sounds like the engine took 0.7-1 qt oil on first 2.7k.... That is close to the high mileage Mazda 6!
I took the car to dealer. They said it is normal because the car was still in "break-in period" They said the new car usually takes around 1 qt engine oil every 3k. Actually I didn't really believe what they said. My gf has a new Mazda 3 2010 I touring and never had the similar problem. I called the dealer in other states and they also said that was normal and asked me "keep an eye on it". I returned to my dealer and asked them to do the multi point inspection. They didn't find any big leakage. They only found little "oil coat" and dirt on my k&n oil filter. I believe that is the engine oil on technician's hands when he put the filter on. So they wiped and tight the filter.
My rpm is around 3000 on 80 mph and 31 -34mpg on highway.
I searched online and i found it may because of engine pressure switch failure? So I just want to know if the dealer bs or not....

Thanks a lot!
It sounds like you have not checked the oil levels yourself, but rather had the oil change location tell you the oil is low. I would recommend checking the oil level yourself right after you get an oil change done, to see where the level is on the dipstick and to be 100% sure it was filled to the proper level (i dont trust walmart mechanics for even the simplest of things). Then, periodically check the levels every couple weeks or so. Finally, right before you take the car in for another oil change, check the level yourself. You will be able to see yourself if the car actually consumed oil or if it was human error. Make sure you check your oil under consistent conditions, i.e. flat surface, allow the engine to cool down a little so all the oil drains back into the pan, etc.
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Old 03-17-2011, 12:34 AM   #9 (permalink)
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Originally Posted by flipper66 View Post
1000-1500 is within mazda spec.

No biggie to them. Just keep an eye on it as things go.
Yeah......I think you are right.
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Old 03-17-2011, 12:37 AM   #10 (permalink)
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Originally Posted by aztrojans12 View Post
It sounds like you have not checked the oil levels yourself, but rather had the oil change location tell you the oil is low. I would recommend checking the oil level yourself right after you get an oil change done, to see where the level is on the dipstick and to be 100% sure it was filled to the proper level (i dont trust walmart mechanics for even the simplest of things). Then, periodically check the levels every couple weeks or so. Finally, right before you take the car in for another oil change, check the level yourself. You will be able to see yourself if the car actually consumed oil or if it was human error. Make sure you check your oil under consistent conditions, i.e. flat surface, allow the engine to cool down a little so all the oil drains back into the pan, etc.
Yeah....It would be better if I did as you said. Next time I will check the level periodically. It is very possible that is due to Walmart's fault not mazda engine's.
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