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    81k mi 2008 Acura TL - Castrol Edge Synthetic 5W20- ~5k mi

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted by ctechbob</div><div class="ubbcode-body">Probably the EGR or some other solenoid. Both my J Series cars do exactly what you describe. Never worried about it.</div></div> I may have to look into that. I have a thread on...
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    81k mi 2008 Acura TL - Castrol Edge Synthetic 5W20- ~5k mi

    I had read that as well, I swapped the #5 with #4 or #6, and the sound still seemed to come from #5 with the stethoscope. It does sound like the sound is tied to rpms and it sounds to me like it is 1 tick/knock per rev so it would make sense if it was something like an injector or valve...
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    81k mi 2008 Acura TL - Castrol Edge Synthetic 5W20- ~5k mi

    Hi all, i was encouraged to get a UOA based on <a href="https://www.bobistheoilguy.com/forums/ubbthreads.php/topics/5277082/extending-oci-through-winter#Post5277082" target="_blank">this</a> thread. here are the results. The last part of the test looks different than other UOA's that I've...
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    extending OCI through winter?

    Sure, the basic test is $25+tax, dropped off at the parts department. TAN and TBN were extra's, I think they were $20 each. I dropped my sample off on Wednesday morning and had the results emailed to me Friday afternoon. I was told all the testing is done at their Edmonton facility.
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    extending OCI through winter?

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted by pitzel</div><div class="ubbcode-body">Regina, no hills, no extended idling on congested freeways. Cold weather keeps excessive temperatures to a minimum. Unless the oil smells like petrol, I can't think of a reason why...
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    extending OCI through winter?

    I have never notice a gasoline smell during oil changes, but I have never smelled specifically for it. Will definately do it next change. As for water and fuel evaporating from the oil, especially on cold the -20 to -30 days the car is just getting up to temp when I get to work, so I feel like...
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    extending OCI through winter?

    I checked the owner's manual, says nothing about OCI's apart from using api approved 5w20, and following the OLM. I expect the OLM would take into account the winter operating conditions the car sees, but I would feel better with that verified with a UOA.
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    extending OCI through winter?

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted by sdowney717</div><div class="ubbcode-body">Cold temperatures means less heat stress on oil. I suppose less chance of it burning into carbon tars. Definitely extend an oil change till the spring, as long as the oil still...
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    extending OCI through winter?

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted by Danno</div><div class="ubbcode-body">I live in a similar climate, cold as heck in the winter. Did an oil change about 4 years ago on a winter short tripped Cobalt. Used Bosch filter cartridge and PP 5W-30. About 5,000...
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    extending OCI through winter?

    [html]Thanks guys, I figured the UOA suggestion was coming. I was hoping there was a more settled debate about short tripping in a fairly cool climate, and how it affects recommended OCI's, seems some of you don't feel it is an issue. Since I feel confidant that my oil can go farther that the...
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    extending OCI through winter?

    Hi fellas, I don't see an "introductions" subforum here, so I will let this be my introduction. I have poked my head in on this forum a handful of times over the last few years but nothing really consistently. recently i have done a bit more reading on here and found some info that makes me...
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