I have a 2017 Mazda CX-5, 2.5L It has 160,000 miles on it now. Where does the oil go between oil changes. I did an oil change yesterday an it was 2 qts. low before the change. This has been happening for a couple of years now. Does not smoke, no oil light, engine has never been overheated, runs great, no problems. Overactive PCV system? Could it be the oil or is it just a hot running engine. I change the oil regularly every 5000 miles. Using Super Tech 0-20 full syn. I know it’s not burning oil, did a spark plug change a few months ago. I don’t know if this is normal or not. Thanks
Disappearing oil between oil changes
- Thread starter Dogwater
- Start date
If it's not leaking it is being consumed. Check and replace the PCV valve if you haven't done so, use an OE part. With a catalytic converter you're not going to see smoke unless it is burning a lot of oil. Using two quarts of oil in 5K miles is not that bad. Having said that, the oil should be checked more often and not allowed to get that low. You can also try a HM oil and/or bumping up to a 5W30 oil.
If it’s not leaking out, then it absolutely IS burning oil.
A quart every 2,500 miles can’t be seen as tailpipe smoke.
You should start checking it more often than every 5,000 miles.
A quart every 2,500 miles can’t be seen as tailpipe smoke.
You should start checking it more often than every 5,000 miles.
My wife's Chevy equinox did the same thing. Then I ran slightly heavier oil in it, and it cut the consumption alot. It used to use a 1/2 qt every 750 miles. Now its down to 1/2 a qt every 1500 miles. It's 10 years old and only has 68k miles on it. Like you said, no signs of oil burning or leaking. I'm not will to spend any money to repair what heavier oil will take care of.,,,
My routine on sunday morning is to wake up have coffee, and check oil in both cars, and top off oil and washer fluid as necessary. Takes five minutes.
Dealer would call that "Normal Consumption". Just think of it this way, your piston rings are well lubricated, so the engine will last forever!
Do the WOT thing from time to time and see if that helps. Sometimes it's not best to drive like an old lady.
Do the WOT thing from time to time and see if that helps. Sometimes it's not best to drive like an old lady.
No leaks. I’ve thought about using 5-30. I’ll check the PCV valve .
My wife drives it 100% of the time, maybe I’ll take it out an thrash it a bit.
Don't tell her I wrote that then!
Women are usually pretty hard on cars from my expierience. It's best to use the proper procedure for the WOT, and it's not just thrasing it a bit.
Women are usually pretty hard on cars from my expierience. It's best to use the proper procedure for the WOT, and it's not just thrasing it a bit.
So no front tire burn outs? LOL
Are YOU sure your not --- gearoiltool??? Little fishy here again????
You can try a 5w-30. Even a 10w-30.
I believe it was/is GearheadTool. One of many obviously.
That is what I meant Brother --- ooops & thanks...
The owner's manual actually specs 5W-30 for markets "Except U.S.A. and CANADA" so you're 100% safe in using that.
Which is what precisely?
It was pretty obvious from the starting blockThat is what I meant Brother --- ooops & thanks...
I think its normal for modern cars with low tension piston rings.