actionstan
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Originally Posted By: [email protected]
Let me ask you this - have you verified that your engine is getting up to normal running temperature?
My co-worker has a SL2 with the DOHC motor - the thermostat was stuck half open for god knows how long. In spite of me changing her oil for her and using top shelf synthetic every 5k miles, it still sludged/varnished up much like yours.
Verified through OBD2 data, that the car was only reaching 140f after driving for an hour. Changed t-stat, back up to 190+. Had to run 2 short OCI's to clean 'er up.
It does get to operating temperature, since i changed the thermostat at about 115k miles. no telling how long that it had not been getting up to temp prior to my ownership. The PCV is also a brand new OEM one, I have babied this car since my ownership.
I should also mention the engine runs like a dream, quiet and strong.
Let me ask you this - have you verified that your engine is getting up to normal running temperature?
My co-worker has a SL2 with the DOHC motor - the thermostat was stuck half open for god knows how long. In spite of me changing her oil for her and using top shelf synthetic every 5k miles, it still sludged/varnished up much like yours.
Verified through OBD2 data, that the car was only reaching 140f after driving for an hour. Changed t-stat, back up to 190+. Had to run 2 short OCI's to clean 'er up.
It does get to operating temperature, since i changed the thermostat at about 115k miles. no telling how long that it had not been getting up to temp prior to my ownership. The PCV is also a brand new OEM one, I have babied this car since my ownership.
I should also mention the engine runs like a dream, quiet and strong.
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