Question about Oil Consumption/ Loss
Hello,
I have a Mazda6 2004 (V6, 3.0L enginge) with 145000KMs (90000 miles) and it has been loosing oil...and I can't figure out why or how (neither can the Mazda Dealership) In between the recommended oil changes (every 8000 kms) I am continutally having to add 2 to 3 L to keep the oil at a safe level. I don't see oil dripping from my car or smoke coming out of my exhaust when driving on the highway What I have done to try and solve this problem (within the last year or so) - changed Crank Seal - changed oil pan and drain plug - changed PCV valve. I am still left with the same oil loss...and the Mazda Technicians are at a loss also. I was curious if anyone else had the same problem with there Mazda6... Any advice/comments would be greatly appreciated. |
Before you changed the PCV valve, was it ever changed before?
-Sheldon. |
You changed the obvious things already. I would think if you had a piston ring issue that you'd see continual smoke. Have you done a compression check? Have you checked your coolant to see if there is any oil in there?
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The PCV valve was not changed before I did it in 2009
I haven't done the compression check yet...but it was something that I was going to bring it up with the dealer. I wasn't sure if this would help diagnose the problem I will check the coolant to see if there is any oil in it...thanks |
Compression check will help you identify if you have head gasket or piston ring sealing issues.
If you find oil in the coolant, I'd suspect head gaskets. Good luck. |
Good chance with the PCV Valve never being changed, that it has caused engine damage. As sstlaure stated, get a compression check done. It will let you know the condition of the engine.
-Sheldon. |
Probably carbon buildup on the scraper rings and oil rings. It is most likely burning the oil at rpm so not noticeable. A good decarbon of the engine using techron and/or seafoam with marvins marvelous mystery oil in the crankcase could help if so.
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