Oil dirty after only 1250 miles! - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Prefabbed Turbo Kits A place to discuss prefabricated turbo kits on the market
Sponsored by:
Sponsored by:

Reply
 
 
 
LinkBack Thread Tools
Old 10-19-2006, 09:19 AM   #1
Junior Member
Thread Starter
 
Join Date: Jan 2005
Location: United Kingdom
Posts: 255
Total Cats: 0
Default Oil dirty after only 1250 miles!

I am still having problems with my oil going dirty/dark brown quick after an oil change.

On average I am changing my oil every 1250 miles.

I basically change it every 2 months or when/If if its dirty or i get HLA noise on start-up.

I am using Millers 10w 40 semi synthetic oil which is a good brand in the UK.

It s not a BIG problem but just wanted to know if this is normal for the other greddy guys.


My car has done about 84,000 miles and for a 14 year old car and i have tried Fully synthetic oil, but my car does not like it. I had silly oil leaks develop when i switched to fully synthetic probaly cus it is thinner oil. i changed the seals and switched back to semi synthetic and they went away.

Last edited by tabs604; 10-19-2006 at 10:07 AM.
tabs604 is offline   Reply With Quote
Old 10-19-2006, 09:26 AM   #2
AFM Crusader
iTrader: (18)
 
olderguy's Avatar
 
Join Date: Oct 2004
Location: Wayne, NJ
Posts: 4,438
Total Cats: 84
Default

I had no leak problems going to Mobil 1 10w30, but my oil gets darker pretty much at 1000 miles. Used to be that pre-turbo oil couldn't be seen on the dipstick when I changed every 3000 miles. I have written it off to the Turbo addition.
olderguy is offline   Reply With Quote
Old 10-19-2006, 10:08 AM   #3
Junior Member
Thread Starter
 
Join Date: Jan 2005
Location: United Kingdom
Posts: 255
Total Cats: 0
Default

thanks for that.

any other turbo/greddy guys care to comment?
tabs604 is offline   Reply With Quote
Old 10-19-2006, 11:04 AM   #4
Senior Member
 
steelrat's Avatar
 
Join Date: Jul 2005
Posts: 514
Total Cats: 0
Default

My royal purple starts out a little dark, but definately doesn't take long to get even darker.....

All I do is monitor the level, and keep and eye on when to do the oil change... Of course, I look for "bits" when doing the change too, just to keep an eye on how the motor is doing.... <G>

I must say, the addition of the new motor, its very nice not to have the add oil every 1000 kms. <G>

Dave,
steelrat is offline   Reply With Quote
Old 10-19-2006, 12:04 PM   #5
Elite Member
iTrader: (4)
 
Join Date: Sep 2006
Location: Charlotte, NC
Posts: 3,049
Total Cats: 4
Default

As far as I understand turbo cars generally "darken" the oil faster. Just be happy it's not a diesel, that oil seems to go black after a few mins.
Efini~FC3S is offline   Reply With Quote
Old 10-19-2006, 12:05 PM   #6
AFM Crusader
iTrader: (18)
 
olderguy's Avatar
 
Join Date: Oct 2004
Location: Wayne, NJ
Posts: 4,438
Total Cats: 84
Default

Quote:
Originally Posted by Efini~FC3S View Post
As far as I understand turbo cars generally "darken" the oil faster. Just be happy it's not a diesel, that oil seems to go black after a few mins.
My Audi diesel used to do that
olderguy is offline   Reply With Quote
Old 10-19-2006, 12:53 PM   #7
Junior Member
Thread Starter
 
Join Date: Jan 2005
Location: United Kingdom
Posts: 255
Total Cats: 0
Default

an explanation i have been given which I am not sure to believe is that using semit synthetic oil, the mineral part is burning form the heat generated form the turbo as it it not a synthetic oil.

I was told a with a fully synthetic oil this will not happen. i will not switch to it again however and have oil leak throught the 14 year old seal cus its so thin and into the clutch/bell housing ruining my expensive exedy racing clutch.

however, your replies are good enough for me.

that means on average I do 6 oil changes a year.

does that not sound excessive considering I do approx 7500 miles a year.
tabs604 is offline   Reply With Quote
Old 10-19-2006, 01:00 PM   #8
Senior Member
 
boostinsteve's Avatar
 
Join Date: Oct 2006
Location: Honolulu, HI
Posts: 563
Total Cats: 0
Default

This will still happen. Due to the heat that the turbo adds, the oil just naturally breaks down faster. When doing an oil change look for any water on top or fuel, that is when you start shitting your pants. Also, with the turbo you will get just a little bit more blow-by the rings, which that little tiny bit extra helps to break down the oil even quicker. My camaro does this now that I am running an 11:1 ratio also, because the added compression adds to the blowby of the cylinders.
boostinsteve is offline   Reply With Quote
Old 10-19-2006, 01:55 PM   #9
:(
iTrader: (7)
 
Join Date: Jul 2006
Location: nowhere
Posts: 8,281
Total Cats: 2
Default

even when i was NA i oculdnt get mibil full synth to last more than 2000 miles before it got used up. Q from quaker stae full synthetic is good better than the mobil even and royal pruple goes 3K miles even wiht the turbo. but it is atleast 7 bucks a liter. this or an oil cooler are youre only options.
magnamx-5 is offline   Reply With Quote
Old 10-19-2006, 02:58 PM   #10
Elite Member
iTrader: (14)
 
Join Date: Mar 2006
Location: Edmonton, AB
Posts: 4,921
Total Cats: 0
Default

How do you know the oil is "used up"? Even people with oil coolers have remarked that with the turbo the oil gets dark pretty quick.

I wonder how much of that is due to running rich?
jayc72 is offline   Reply With Quote
Old 10-19-2006, 03:05 PM   #11
Elite Member
iTrader: (3)
 
Mach929's Avatar
 
Join Date: Oct 2004
Location: lansdale PA
Posts: 2,500
Total Cats: 0
Default

i didn't think color was any real indication of the condition of the oil, either way i wouldn't worry about it
Mach929 is offline   Reply With Quote
Old 10-19-2006, 03:25 PM   #12
Senior Member
iTrader: (1)
 
Join Date: Mar 2006
Location: Tucson "it's 110" Arizona
Posts: 1,017
Total Cats: 0
Default

Quote:
Originally Posted by Mach929 View Post
i didn't think color was any real indication of the condition of the oil, either way i wouldn't worry about it
2nd.
UofACATS is offline   Reply With Quote
Old 10-19-2006, 08:32 PM   #13
Senior Member
iTrader: (7)
 
Join Date: Mar 2005
Location: VT
Posts: 939
Total Cats: 0
Default

I bought a car with ~30K miles on it a few years ago, had the same problem...(mobil 1) I pulled the oil pan and found about 1/2" of sludge caked in the pan... I cleaned up the pan, and between the first couple of oil changes it was almost impossible to tell that there was even oil in it.

So there might just be sludge on the bottom of your pan???
Pulling a miata pan isn't as easy some other cars because of the subframe clearance though..
Jefe is offline   Reply With Quote
Old 10-20-2006, 12:29 AM   #14
Senior Member
 
boostinsteve's Avatar
 
Join Date: Oct 2006
Location: Honolulu, HI
Posts: 563
Total Cats: 0
Default

The main indicator of oil is the smell. If the oil smells like it has been baking, then the oil has broken down. If the oil is coming out and there is a severly overpowering smell to it, then the oil has broken down. Something to try and do to clean the oil pan out is to run seafoam cleaner through the oil system. DO NOT RUN FOR MORE THAN 200 miles like this though. Even though seafoam is 100% petroleum, it will be a precatalyst for the oil to break down. It cleans out the oil system really well. Also, when I tore apart my gen2 sb chevy the bearings had been micropolished and looked immaculate. If they would have been thicked, I would have reused them for just a stock rebuild. I owe this all to royal purple, that oil is the ****. Just my opinion though, do whatever makes you happy and what you feel is the best. Also, my greddy came in today, yes, let the fun start. I can barely keep myself out of the garage. I want that and the emanage on there so badly I am salivating.
boostinsteve is offline   Reply With Quote
Old 10-20-2006, 01:40 AM   #15
:(
iTrader: (7)
 
Join Date: Jul 2006
Location: nowhere
Posts: 8,281
Total Cats: 2
Default

smell and hla's tell the story also you will notice abit less hot pressure with oil that has broken down into a lower vistocity range.
magnamx-5 is offline   Reply With Quote
Old 10-20-2006, 01:57 AM   #16
Junior Member
iTrader: (1)
 
Join Date: May 2006
Location: Phoenix, AZ
Posts: 401
Total Cats: -1
Default

You want to know how your oil is holding up? Then have an oil analysis done. That's the only way you'll ever know for sure. Looking at the color of your oil and coming to the conclusion that it needs changing is silly if not downright stupid.

My oil shows excessive amounts of silicon which is basically dirt. Here in Arizona, with the desert air and plenty of new housing construction, we have a serious problem with dust. The high aluminum content is due to the silicon wearing out the cylinders - Aluminum and silicon = Aluminum Oxide = SANDPAPER!

Other then the dirt, the oil would have been good for at least another 1000~2000 miles.

My plans are to be very diligent about cleaning and oiling my K & N air filter.

chuckerants is offline   Reply With Quote
Old 10-20-2006, 09:43 AM   #17
Elite Member
iTrader: (5)
 
m2cupcar's Avatar
 
Join Date: Jan 2005
Location: Atlanta
Posts: 7,236
Total Cats: 288
Default

I hope you don't have aluminum cylinder walls. My guess is that the silicon is wearing the aluminum from things like piston skirts and cam journals. IMO your aluminum count is VERY low. That's very good. - rob
m2cupcar is offline   Reply With Quote
Old 10-20-2006, 10:08 AM   #18
Junior Member
iTrader: (1)
 
Join Date: May 2006
Location: Phoenix, AZ
Posts: 401
Total Cats: -1
Default

Quote:
Originally Posted by m2cupcar View Post
I hope you don't have aluminum cylinder walls. My guess is that the silicon is wearing the aluminum from things like piston skirts and cam journals. IMO your aluminum count is VERY low. That's very good. - rob
I was trying to remember exactly what the analyst told me over the phone.

However, the aluminum content for my car is more than double the Universal Norm. According to Blackstone, the Universal Norm is for ALL of the Mazda Miata 1.8 engines they've tested historically.

Also, the last time I cleaned my K & N, I didn't oil it which hopefully is why I got all that dirt into the engine. I'll wait to do another oil analysis in 3000 miles. If I still have all that silicon, then I'll be replacing the K&N with something else.
chuckerants 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
Noob to Miataturbo from MA JxPhan Meet and Greet 3 10-02-2015 03:17 AM
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 03:19 PM.