Found something in my transmission drain plug
Road Captain
Joined: Sep 2010
Posts: 574
Likes: 3
From: AB Canada
Actually clean oil isn't good. There are always combustion by-products entering the oil. It should go dark,that means it's doing it's job. If the oil stays clean for a long time that means the oil isn't absorbing and dispersing contaminants,which means they are sticking inside the engine and not being carried away by the oil.
And there have been many studies concerning oil and how well it protects and when during it's lifecycle it works best.
Studies show that oil protects best after it's been in the crankcase awhile,meaning oil with 3000 miles protects better than oil with 0 miles. Which is why many oem's are spec'ing synthetic oils and longer drain intervals,because a long drain oil,run for 10000 miles equal less wear than changing the oil at 5000 miles twice.
It seems the additive packages in the oils need the combustion by-products to work more effectively,not to mention the dry start at every oil change which obviously wears the engine more than a lubricated start.
So new oil doesn't protect as well as oil that has been broken in.
And filters become more efficient with use,so changing it at 3000 miles actually allows larger sized particles to flow around in the oil than changing it at 10000 miles.
As the filter media filters contaminants those particles fill the holes in the media,thus stopping larger particles from getting through.
So the old days and old ideas no longer apply to this brave new world.
And there have been many studies concerning oil and how well it protects and when during it's lifecycle it works best.
Studies show that oil protects best after it's been in the crankcase awhile,meaning oil with 3000 miles protects better than oil with 0 miles. Which is why many oem's are spec'ing synthetic oils and longer drain intervals,because a long drain oil,run for 10000 miles equal less wear than changing the oil at 5000 miles twice.
It seems the additive packages in the oils need the combustion by-products to work more effectively,not to mention the dry start at every oil change which obviously wears the engine more than a lubricated start.
So new oil doesn't protect as well as oil that has been broken in.
And filters become more efficient with use,so changing it at 3000 miles actually allows larger sized particles to flow around in the oil than changing it at 10000 miles.
As the filter media filters contaminants those particles fill the holes in the media,thus stopping larger particles from getting through.
So the old days and old ideas no longer apply to this brave new world.
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Cruiser
Joined: Nov 2011
Posts: 136
Likes: 0
From: California
I concur...and I know it's overkill to change the trans so often,but for 10-15 bux I don't mind changing it out when I do the other fluids.Is it a waste?? Meh...I dunno,I can feel the tranny shifting smoother personally,and I know it's not a placebo effect.There may be nothing wrong with my trans oil at 4k,but if it runs just a little bit smoother when I change it its worth it to me man.
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