Prefilling oil FILTER contamination

Some filter have a little bit of metal or whatever from the threading process. I'm in a habit of taking a clean towel and wiping it off by unscrewing the filter around my towel wrapped finger. It takes about a second and is second nature. I've found it on nearly every spin on filter regardless of type, media, or process. It is equivalent to wiping the oil cap seal clean, or the dipstick seal. Is it doing anything meaningful? Probably not, but it makes me feel good. I would feel embarrassed to make a video and tell people to not pre-fill filters based on that though.
 
Not my Toyota. Unless you are saying that holding the pedal down while starting is clear flood mode. I'd rather just fill the filter
Yes, that's exactly what clear flood mode is.
Not all of my cars have vertically-oriented oil filters so they can't be fully prefilled, that's what this is good for.
 
Use a funnel inside the thread, but that has to be microscopically clean too. Then take the same funnel to fill the engine, since it was washed with oil already. Or pour better so oil never touches those dirt laden threads.
My Ford could use flood mode, but not the Toyota. I tried it once and had the full rpm from cold sound most of my neighbors enjoy hearing on their cars especially on cold mornings.
 
If there are contaminants on the filter threads, even if not prefilled, wouldn't such contaminants be pushed into the filter when it is threaded on? They would then circulate and then be filtered. But years ago, nobody I knew even thought about pre-filling, and lots of cars had sideways fitters that couldn't be prefilled anyway. I must have just been lucky all these years.
 
If there are contaminants on the filter threads, even if not prefilled, wouldn't such contaminants be pushed into the filter when it is threaded on? They would then circulate and then be filtered. But years ago, nobody I knew even thought about pre-filling, and lots of cars had sideways fitters that couldn't be prefilled anyway. I must have just been lucky all these years.
Do those kind of thoughts keep you awake at night?
 
Many YouTubers are just smart enough think up something to get views and make money. No education, credentials, experience or knowledge of the subject required.

You tube will be listed in the top 3 reasons for the downfall of our civilization one day.
You definitely need to have your bull crap meter turned on while looking for valid, helpful information on YouTube. More so all the time.

The entertainment part is easy to filter out. At least it should be, for anyone with an average or above common sense level. But it is the videos that are purported to be informational that can get you.
 
Do those kind of thoughts keep you awake at night?
Hey Bro. No keeping me up at night. Maybe I wasn't clear. I hadn't thought about this topic at all until I saw the post. I also made the friendly observation for many years no one even thought about pre-filling oil filters.
 
Ya BS. Always run finger on threads anyway. If I get cut, i need to look further. ;)
All my cars have horizontal mounted oil filter. I fill them to top, and let the media absorb it. Oil never comes out.
That's an interesting point. Been a while since I had my old Mustang with 200 ci six and horizontal oil filter. I'll try the prefill and let it soak in approach.
 
If there are contaminants on the filter threads, even if not prefilled, wouldn't such contaminants be pushed into the filter when it is threaded on? They would then circulate and then be filtered. But years ago, nobody I knew even thought about pre-filling, and lots of cars had sideways fitters that couldn't be prefilled anyway. I must have just been lucky all these years.
Yes, such contaminants might be pushed into the filter---and into the engine unfiltered.
I (partially) prefilled "sideways" spin-on oil filters starting >40 years ago. It would be difficult and messy on a "sideways" canister filter, so I don't bother.
 
If there are contaminants on the filter threads, even if not prefilled, wouldn't such contaminants be pushed into the filter when it is threaded on?
It's possible if the threads are contaminated. Why I always check and clean them if necessary. I also check over the entire filter before installing it.
 
The "guy"

scotty-kilmer-cover.webp
 
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