I overfilled my engine with oil need help - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


General Miata Chat A place to talk about anything Miata

Reply
 
 
 
LinkBack Thread Tools
Old 03-17-2010, 12:28 AM   #1
Junior Member
Thread Starter
 
Join Date: Nov 2008
Location: Asheville, NC
Posts: 104
Total Cats: 1
Default I overfilled my engine with oil need help

I overfilled my engine with oil. Wandering if anybody else has done this.
What exactly can this do to the engine?

It caused the oil to get milky at the pcv valve & oil fill cap like air got mixed in with the oil.

After replacing the filter & oil to the proper level the new oil on the oil fill cap no longer looks milky.

It took about 100 miles of driving & hitting full throttle about only 10 times to cause oil to leak out the turbo compressor.

I may have over filled my oil on my last oil change also 3 months earlier.

How do I know if I damaged the engine bearings or not.

There are brass looking particles in the oil & im trying to determine if they came from the turbo bearings or the engine.

oil came out of the compressor side of the turbo.

I replaced the filter & oil to the proper level & oil still comes out the compressor side of the turbo into the intake pipes & there are sizeable flakes of brass in the oil that came out the compressor side of the turbo into the intake pipes.

I had a cylinder compression test done & the compression was ok.

thanks
MSMjohn is offline   Reply With Quote
Old 03-17-2010, 12:32 AM   #2
Junior Member
 
Join Date: Feb 2009
Location: Southside, VA
Posts: 60
Total Cats: 0
Default

how much oil did you "overfill"?
jarrett2k is offline   Reply With Quote
Old 03-17-2010, 12:39 AM   #3
Junior Member
Thread Starter
 
Join Date: Nov 2008
Location: Asheville, NC
Posts: 104
Total Cats: 1
Default

Quote:
Originally Posted by jarrett2k View Post
how much oil did you "overfill"?
I put in 5 quarts thinking it was 4 & I changed the oil filter.

I may have done it during the previous oil & filter change also because there was no oil left in the 5 quart container which I still had left sitting in my garage & the throttle had that same bloated feel to it.

Last edited by MSMjohn; 03-17-2010 at 12:47 AM. Reason: spelling
MSMjohn is offline   Reply With Quote
Old 03-17-2010, 12:45 AM   #4
Elite Member
iTrader: (15)
 
Join Date: Sep 2007
Location: Incline Village, NV
Posts: 2,073
Total Cats: 5
Default

Do you not check the oil level before starting the car up? Because you should.

I put 4.5-4.75 quarts in my motor. Ive got a decent sized oil cooler plumbed in though.
thesnowboarder is offline   Reply With Quote
Old 03-17-2010, 12:55 AM   #5
Junior Member
iTrader: (1)
 
Join Date: May 2009
Location: TN
Posts: 328
Total Cats: 4
Default

Engine bearings are not made of brass. Pull your turbo

After you replace the oil and filter, idle the engine to prime the filter before checking the oil level. There is no reason to overfill or top off the oil unless it drops to the low mark.
southernmx5 is offline   Reply With Quote
Old 03-17-2010, 01:04 AM   #6
I'm Miserable!
iTrader: (11)
 
Join Date: Apr 2008
Location: Texas, 'Murica
Posts: 2,505
Total Cats: 7
Default

Holy hell southern, im from Bluff city!!!!!
chicksdigmiatas is offline   Reply With Quote
Old 03-17-2010, 01:11 AM   #7
Junior Member
Thread Starter
 
Join Date: Nov 2008
Location: Asheville, NC
Posts: 104
Total Cats: 1
Default

Quote:
Originally Posted by thesnowboarder View Post
Do you not check the oil level before starting the car up? Because you should.

I put 4.5-4.75 quarts in my motor. Ive got a decent sized oil cooler plumbed in though.
Yes I checked

I & other Mazdaspeed mx5 owners have noticed the dipstick reads a little higher on one side of the dipstick than the other. If I recall it read real high on one side but on the F mark line on the other side.

Problem was I had mistakenly convinced myself that those 5 qt containers were only 4 quarts.

The way the brain works when it looks at a word the brain only sees the first & last letters then blanks out the middle. And the oil container quantitys started with a 4 so I think thats what happened my brain saw only the 4 & blanked out the middle.
MSMjohn is offline   Reply With Quote
Old 03-17-2010, 01:23 AM   #8
Senior Member
iTrader: (8)
 
Join Date: Mar 2006
Location: Indianapolis, IN
Posts: 758
Total Cats: 5
Default

Quote:
Originally Posted by southernmx5 View Post
Engine bearings are not made of brass. Pull your turbo

After you replace the oil and filter, idle the engine to prime the filter before checking the oil level. There is no reason to overfill or top off the oil unless it drops to the low mark.
Shredded engine bearings can look like copper/brass/bronze when they are mixed in with your oil.
boileralum is offline   Reply With Quote
Old 03-17-2010, 01:24 AM   #9
Junior Member
Thread Starter
 
Join Date: Nov 2008
Location: Asheville, NC
Posts: 104
Total Cats: 1
Default

Here are some micro close up pictures if the oil & particles in the pre compressor intake pipe.

I took one picture after placing a penny into the pipe for size comparison of the brass color particles



MSMjohn is offline   Reply With Quote
Old 03-17-2010, 01:29 AM   #10
Elite Member
iTrader: (1)
 
NA6C-Guy's Avatar
 
Join Date: Feb 2008
Location: Birmingham Alabama
Posts: 8,038
Total Cats: 43
Default

If you are talking about the large jugs of oil (gallon), they are 4 quarts, which is what I use and end up right perfect oil level every time. Not sure how much oil overfill you would need to contact the crank, which I would imagine would require more than 5 quarts, considering a lot of the oil in in the block and head, not in the pan when running. But if oil was being contacted by the crank, I would think that could cause excessive wear on the main bearings. Hard to tell in the pictures, but it looks like you struck gold!
NA6C-Guy is offline   Reply With Quote
Old 03-17-2010, 01:43 AM   #11
Junior Member
Thread Starter
 
Join Date: Nov 2008
Location: Asheville, NC
Posts: 104
Total Cats: 1
Default

Quote:
Originally Posted by NA6C-Guy View Post
If you are talking about the large jugs of oil (gallon), they are 4 quarts, which is what I use and end up right perfect oil level every time. Not sure how much oil overfill you would need to contact the crank, which I would imagine would require more than 5 quarts, considering a lot of the oil in in the block and head, not in the pan when running. But if oil was being contacted by the crank, I would think that could cause excessive wear on the main bearings. Hard to tell in the pictures, but it looks like you struck gold!
lol it does look like gold in the oil.

The journal bearings in the IHI RHF5 Mazdaspeed mx5 turbo are exactly the same color as the metal particles in the pictures above.
MSMjohn is offline   Reply With Quote
Old 03-17-2010, 01:59 AM   #12
Junior Member
Thread Starter
 
Join Date: Nov 2008
Location: Asheville, NC
Posts: 104
Total Cats: 1
Default

Quote:
Originally Posted by NA6C-Guy View Post
If you are talking about the large jugs of oil (gallon), they are 4 quarts, which is what I use and end up right perfect oil level every time. Not sure how much oil overfill you would need to contact the crank, which I would imagine would require more than 5 quarts, considering a lot of the oil in in the block and head, not in the pan when running. But if oil was being contacted by the crank, I would think that could cause excessive wear on the main bearings. Hard to tell in the pictures, but it looks like you struck gold!
I went out & rechecked the large Mobil 1 oil container & it say 4.73L/5U.S.Qts
MSMjohn is offline   Reply With Quote
Old 03-17-2010, 02:02 AM   #13
Elite Member
iTrader: (1)
 
NA6C-Guy's Avatar
 
Join Date: Feb 2008
Location: Birmingham Alabama
Posts: 8,038
Total Cats: 43
Default

Quote:
Originally Posted by MSMjohn View Post
I went out & rechecked the large Mobil 1 oil container & it say 4.73L/5U.S.Qts
I guess some do come in a convenient 5 quart jug, as most cars require. I know the Rotella T I use comes in a 1 gallon jug, which would be 4 quarts. So yes, my mistake, I guess you do have a 5 quart jug. I still don't see how 5 quarts would be enough to have contact with the crank counterweights. How low on the pan is the return on the MSM? My guess would be the oil got above the return on the pan and maybe restricted return flow and caused it to back up in the turbo and it got past the seals. Does it still leak oil at the turbo after replacing the oil at the correct level? Still not sure how restricted flow would damage a turbo bearing(s), maybe the oil overheated and burned/coked and caused the bearing damage. I haven't done much turbo rebuilding or dealt with many worn turbos, so I'm not real sure of the consequences of that.
NA6C-Guy is offline   Reply With Quote
Old 03-17-2010, 02:18 AM   #14
Senior Member
 
Join Date: Dec 2004
Location: Brisbane, Australia
Posts: 1,272
Total Cats: 32
Default

I had crap like that come out of my gearbox.
timk is offline   Reply With Quote
Old 03-17-2010, 02:39 AM   #15
Junior Member
iTrader: (1)
 
Join Date: May 2009
Location: TN
Posts: 328
Total Cats: 4
Default

Quote:
Originally Posted by chicksdigmiatas View Post
Holy hell southern, im from Bluff city!!!!!
Hell, bluff city is almost in my backyard. I dont know anyone else with a turbo miata around though.
southernmx5 is offline   Reply With Quote
Old 03-17-2010, 06:51 AM   #16
Elite Member
iTrader: (24)
 
kotomile's Avatar
 
Join Date: Oct 2006
Location: Monterey, CA
Posts: 7,578
Total Cats: 40
Default

Quote:
Originally Posted by NA6C-Guy View Post
If you are talking about the large jugs of oil (gallon), they are 4 quarts, which is what I use and end up right perfect oil level every time. Not sure how much oil overfill you would need to contact the crank, which I would imagine would require more than 5 quarts, considering a lot of the oil in in the block and head, not in the pan when running. But if oil was being contacted by the crank, I would think that could cause excessive wear on the main bearings. Hard to tell in the pictures, but it looks like you struck gold!
Big jug O oil at a parts store: 4 qts. Big jug O oil at Wal Mart: 5 qts. That's been my experience, YMMV.
kotomile is offline   Reply With Quote
Old 03-17-2010, 08:27 AM   #17
Junior Member
iTrader: (6)
 
Join Date: Jan 2006
Location: St Johns, Fl
Posts: 378
Total Cats: 0
Default

I noticed the same thing the other day. I bought some Castrol GTX (for the wife's car) from Napa since I was buying some Napa gold filters anyway (40% off this month). It was a 4 quart jug. I was certain I usually get 5 quart jugs from Walmart where I usually buy it from. When I got home, I compared and yes, Napa sells 4 quart jugs, Walmart sells 5 quart jugs (for pretty much the same money).
clay is offline   Reply With Quote
Old 03-17-2010, 08:37 AM   #18
Senior Member
iTrader: (3)
 
Join Date: Jul 2005
Location: Connect-I-Cut
Posts: 1,431
Total Cats: 0
Default

Walmart FTW I always get it at walmart and the extra qt is always good for my small oil leak.
miataspeed2005 is offline   Reply With Quote
Old 03-17-2010, 08:40 AM   #19
Senior Member
 
Join Date: Dec 2004
Location: Brisbane, Australia
Posts: 1,272
Total Cats: 32
Default

I don't think I'd have the ***** to go into a Walmart shop. Is it really like that peopleofwalmart.com website?
timk is offline   Reply With Quote
Old 03-17-2010, 11:07 AM   #20
Elite Member
 
Join Date: Dec 2008
Location: Colorado
Posts: 1,669
Total Cats: 36
Default

FWIW, I doubt an extra quart of oil is going to torch an engine or turbo. The weights hitting some oil will not grenade mains. Some folks purposely run with more oil thn recomended for raod course work to ensure no starvation occurs in corners, without problems.

There is something else happening there, not caused by an extra quart of oil.

My guess is that your stock MSM turbo ate it and thats why you have the leaks on the comp side, the flakes of metal, and possibly the PCV issues due all the oil misting into your intake air etc. Those turbos are not exactly the picture of reliability.

I would not drive the car any more than needed with oit like that, pull the turbo, and take a look. My guess is that it is upgrade or replacement time.
Sparetire is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 57 07-19-2017 05:11 PM
OTS Bilstein to motorsports ASN conversion stoves Suspension, Brakes, Drivetrain 5 04-21-2016 04:00 PM
Changing from 460cc to flow force 610cc in diypnp 90 Turbo MEGAsquirt 19 10-19-2015 04:23 PM
Expected intake temps on the track? tazswing Race Prep 20 10-03-2015 12:04 PM
Moroso Air Oil Separator Catch Can Aroundcorner Miata parts for sale/trade 2 10-01-2015 04:20 PM


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 10:44 AM.