I don't and I've only got 350K on one Camry where I don't do it. No oil related problems.. Very few problems of any kind.
Do you pre-oil your filter?
- Thread starter DrRoughneck
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Nope, just the ring. Sometimes I will on other kinds of equipment such as hydraulic filters or fuel filters, but on car oil filters I don't really bother. I've had more problems dumping the oil everywhere as I try to scoot under the vehicle and put it back on.
Originally Posted By: Linctex
I still prefill as much as I can - it seems to make oil pressure 2-3 seconds sooner that way.
My experiences as well. Takes less time for oil pressure to come up. So why not? As I'm doing an oil change I top off the new filter have a dozen times as it keeps on absorbing fluid....up to 14 oz on an XG2. I spill very little since the mounts are vertical/nearly so.
The other school of thought is that new oil is full of impurities that won't go filtered on that first time around the engine. OK. So 14 oz of fluid out of 192 oz (7%) has the potential to cause "harm." I'll take my chances pre-filling the filter. If you can't spare an extra minute to pre-fill the filter, you must be very pressed for time and probably should have someone else doing your oil changes.
I still prefill as much as I can - it seems to make oil pressure 2-3 seconds sooner that way.
My experiences as well. Takes less time for oil pressure to come up. So why not? As I'm doing an oil change I top off the new filter have a dozen times as it keeps on absorbing fluid....up to 14 oz on an XG2. I spill very little since the mounts are vertical/nearly so.
The other school of thought is that new oil is full of impurities that won't go filtered on that first time around the engine. OK. So 14 oz of fluid out of 192 oz (7%) has the potential to cause "harm." I'll take my chances pre-filling the filter. If you can't spare an extra minute to pre-fill the filter, you must be very pressed for time and probably should have someone else doing your oil changes.
Kestas
Staff member
It's been reported that Caterpillar specifies filling an oil filter while changing for one of their applications.
Would be nice to see some data here. Maybe the time for oil light for a filled vs empty filter. Someone with a data logger? Ed
Depends on the direction the filter goes on and its size.the little filter on the tahoe no. But my truck yes because it rattles if i dont.
I don't pre-oil filters but what I always do if the vehicle allows it, is with ignition disabled, crank the engine on the starter until the oil light goes out. That's easy to do on my old motorcycle but I wouldn't know how to do it on a modern car without confusing the poor things brains.
I recently stopped pre oiling and didn't notices any difference in noise when I started it.
Yeah I splash a bit in the filter prior to oil change. Probably only gets 10 percent or so of a quart but it gets some each time.
Nope I just oil the gasket. Filter on my truck holds nearly a quart and I've never had any problems.
For horizontal or diagonal (holes down) I don't pre fill the filter and that is on the majority of the cars I service. On my Silverado with its vertically mounted filter I pre fill about 3/4 up to quell dry start valvetrain noise.
Mine sits at a slanted angle about 45 degrees so when I did pre fill it I had to be careful not to go overboard or it would leak fresh oil when I tilted it to screw on.
I think the owners manual of my Cummins diesel said to prefilled.
Never have. Just oil the gaskets. My XJ and LR3 have horizontal filters. My KJ is about a 45 deg angle and I have to rotate around quite a bit (it has dual fans), if I ever did fill it, it'd just spill everywhere.
I do pre-fill, and you can even do a partial pre-fill even on filters that are mounted horizontally or base down.
Just fill the filter with a little bit of oil at a time, and let it soak into the media as you spin it around to distribute the oil through the center tube holes. Keep doing that until it won't soak up any more oil, and still not spill any out when turned sideways or base down. You'd be surprised how much oil you can get in the filter doing it that way.
Just fill the filter with a little bit of oil at a time, and let it soak into the media as you spin it around to distribute the oil through the center tube holes. Keep doing that until it won't soak up any more oil, and still not spill any out when turned sideways or base down. You'd be surprised how much oil you can get in the filter doing it that way.
I like to add enough so the media is saturated (and lube the gasket). If possible, I like to pre-fill. I like to think it helps the media on the first start (where it would be dry) but have no data to say it helps.
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