dnewton3
Staff member
There's a new YT vid from Freedom Worx regarding pre-filling oil filters. "The TRUTH about PRE-FILLING oil filters ... ACTUAL SCIENCE" is the title
I won't link it, you'll have to go to YT and find it yourself; there are some elements (profanity and sexual innuendo) which violate our policies; so viewer discretion advised ...
While his approach is admittedly "garage science", it's most certainly entertaining and reasonably well produced. It's 40 minutes long, and yet I don't find myself exhausted as if I had watched LSJr or SK. This guy injects enough sly humor into his vids to keep you entertained, and yet the substance of his content is still valuable.
I believe several of the conclusions he comes to at the end are valid.
- pre-fill or not has no real appreciable effect on wear
- bearing wear isn't typically the cause of necessity to rebuild an engine
- bearing wear is often a matter of contamination, not oil brand/grade
- most engine wear isn't from start-up to full oil pressure (seconds); rather, it's from start-up to full operating temp (minutes)
I'll note that some of the SAE studies he references are very old, and may not be as applicable today. But still, his points are salient and worthy of consideration. Also, this "wear from less than full engine temp" may well be the reason many hybrids today are calling for 0w-16, even 0w-8 lubes; thinner oils flow better at cold temps (obviously) and those hybrid drivetrain engines see very short operation cycles, meaning they probably rarely operate at a full-temp.
One thing he does not address is the TCB (tribochemical barrier) as is the subject of SAE paper 2007-01-4133; that also shows how wear is affected by the beneficial oxidation coating on the engine components relative to OCI duration.
All in all, a fun video IMO, and worthy of discussion here.
I won't link it, you'll have to go to YT and find it yourself; there are some elements (profanity and sexual innuendo) which violate our policies; so viewer discretion advised ...
While his approach is admittedly "garage science", it's most certainly entertaining and reasonably well produced. It's 40 minutes long, and yet I don't find myself exhausted as if I had watched LSJr or SK. This guy injects enough sly humor into his vids to keep you entertained, and yet the substance of his content is still valuable.
I believe several of the conclusions he comes to at the end are valid.
- pre-fill or not has no real appreciable effect on wear
- bearing wear isn't typically the cause of necessity to rebuild an engine
- bearing wear is often a matter of contamination, not oil brand/grade
- most engine wear isn't from start-up to full oil pressure (seconds); rather, it's from start-up to full operating temp (minutes)
I'll note that some of the SAE studies he references are very old, and may not be as applicable today. But still, his points are salient and worthy of consideration. Also, this "wear from less than full engine temp" may well be the reason many hybrids today are calling for 0w-16, even 0w-8 lubes; thinner oils flow better at cold temps (obviously) and those hybrid drivetrain engines see very short operation cycles, meaning they probably rarely operate at a full-temp.
One thing he does not address is the TCB (tribochemical barrier) as is the subject of SAE paper 2007-01-4133; that also shows how wear is affected by the beneficial oxidation coating on the engine components relative to OCI duration.
All in all, a fun video IMO, and worthy of discussion here.
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