hey guys, turbo seals have seen better days @ 173,xxx, and she smokes a little bit after a quick 5 second 8psi boost, currently running 5w20 syn, was thinking maybe running a 15w40 syn might reduce oil burn a little bit? would just like a little input....thanks!!
running heavy oil?????
- Thread starter got_psi
- Start date
protege3690
Member
- :
- 2003.5 MSP #290
ive been running 5w40 syn. no smoking, and has helped my oil consumption some also. i used to need about 1 1/2 qts of oil between oil changes. now i use about 1/2 - 3/4 between changes if that.
hornsfan10609
Certified Mazda Tech
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- 2003.5 Mazdaspeed Protege x2
First of all, the car is SUPPOSED to run 5w-30 anyway. I wouldn't run heavier than a 10w-40. I recommend you stick with the 5w-30.
turbomsp2003
Member
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- mazdaspeed protege 03
I run 10-30 and never have to add oil in between changes or never smoke either....but its hot here in arizona thats why i dont use oem specs of 5-30
hornsfan10609
Certified Mazda Tech
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- 2003.5 Mazdaspeed Protege x2
MSPs had regular black plastic oil fill caps. Mazdaspeed Miatas had silver metal oil caps with a set screw and the Mazdaspeed3 had a red annodized metal cap. The MSM and MS3 caps read Mazdaspeed on top. Many MSPs have the red MS3 cap swapped. Only 1st gen MS3 caps will fit, the design was changed to a 'quick release' half turn style in 2010 instead of the screw type that fits the protege. On the 2nd gen MS3 it reads '5W-30' on the cap which is the correct oil weight for the MS3. All Mazdaspeed models (Protege, Miata, 6 and 3) take 5W-30 oil
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hornsfan10609
Certified Mazda Tech
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- 2003.5 Mazdaspeed Protege x2
You will never actually be able to tell the difference by driving the car
with the 5-20 i would do a 3rd gear pull 4k-6k and let off to shift and when i got back on the throttle it would roll a noticable amount of blue smoke you could see from the rear view, but it wouldnt smoke during the pull or at 0% throttle, only after the pull when i got back into it
hornsfan10609
Certified Mazda Tech
- :
- 2003.5 Mazdaspeed Protege x2
Could also be valve seals or piston rings, even a head gasket. Most likely if it is when the turbo is spooling or immediately after letting off when boosting it is the turbo
i agree.. i'd be looking at piston rings to be completely honest. i know its the last thing you want to hear but after you boost a little you dont see anything, but under heavy load/boost youll get a blueish/smokey stream coming from your exhaust.. the piston rings have to be filed to any correlating boost your putting through there and with any wear or distortion (from overheating in the past?!@ or from simply over-boosting) with any modifications you do youll have cause/effect.. if anything you have done to your car results in higher boost (manual or electric boost controller) (OR EVEN JUST SUPPORTING MODS LIKE EXH MANI) your lines will change with more airflow into the block. after higher stress/boost you might be combusting and pushing through those gaps in your rings..
I had my rings filed to support boost pressure between 18-25 psi.. and thats the sweetspot.. too little boost/engine rpm and my rings wont have enough expansion in em to close the minute gaps.. too much boost/internal pressure and the rings will touch/bind and not seal..
engines are funny animals and have to be observed whenever ANYTHING has changed to them.. having a higher mileage engine like yours, maybe theres just some carbon buildup in your piston sleeves and needs to be honed..
you can do minor work on the block without having to completely disassemble your car.. but things will have to be taken apart if you want to solve the problem.. maybe not even necessarily replace parts, but a tune-up and cleaning of engine internals would make your car like new!! new rings/seals/gaskets and a quick polish/hone of the block might run you a total of 1000$ but would practically be a new engine- something to think about
the blue smoke though is a tell-tale sign of oil burn and not coolant burn.. if you had a problem with your headgasket you'll more then likely see different colors of smoke depending on what was primarily leaking, but will generally be a combination of both if it were head gasket..
cheers
tweety2300
Member
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- 2001 mazda protege mp3
Have you checked ic piping for oil? If there's oil in the cold pipe and throttle body it's the turbo
If there's oil in the intake pipe before it gets to the turbo it's blow by from the line that goes from the valve cover to intake
If there's oil in the intake pipe before it gets to the turbo it's blow by from the line that goes from the valve cover to intake
great find! now it's just a question if you want to get your turbo worked on or replaced! 
. generally speaking, the seal would be maybe 20 bucks.. depending on how savvy you are you could do it with some basic tools or have a shop do it for upwards of~250$
I got a stock turbo if your interested.
90,000 on it and no problems lol
. generally speaking, the seal would be maybe 20 bucks.. depending on how savvy you are you could do it with some basic tools or have a shop do it for upwards of~250$I got a stock turbo if your interested.
90,000 on it and no problems lol
