Priming your oil filter when you change your oil
- Thread starter D-Roc
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Since I have a vertically mounted filter I do mine. But my wifes car is horizontal if not slightly upside down so it goes on dry.
My car takes cartridge filters, so it goes in dry.
I prefill mine--it's vertical.
How many who prefill their filters actually prefill the entire filter instead of just the center?
How do you do it and how long does it take you?
How do you do it and how long does it take you?
Using the EAO filter, even with a dry filter, the oil light goes out in less than a second. It often just winks on and off at startup. Good thing, my Civic filter is horizontal and precludes any meaningful prefill.
Harry
Harry
"How many who prefill their filters actually prefill the entire filter instead of just the center?
How do you do it and how long does it take you? "
Seconds, usually.
Any oil poured into the center will seep out through the media so the whole filter is full.
When an engine is fired up for the first time, it has assembly lube over an rotating parts and the cylinders are well oiled when the pistons are inserted. Filling the oil galleries takes a second or two. Don't know if an engine manufacturer fills the filter(probably not), but will a lubed assembly, it souldn't matter much.
How do you do it and how long does it take you? "
Seconds, usually.
Any oil poured into the center will seep out through the media so the whole filter is full.
When an engine is fired up for the first time, it has assembly lube over an rotating parts and the cylinders are well oiled when the pistons are inserted. Filling the oil galleries takes a second or two. Don't know if an engine manufacturer fills the filter(probably not), but will a lubed assembly, it souldn't matter much.
I always fill any vertical filter W/ oil so you don't have a dry start, takes about 2-3 second for the oil preasure to come up. Horizontal apts are dry and take 3-5 seconds for the oil preasure to come up. It doesn't take long to prefill a filter. The faster the engine gets oil the better! My 2 cents.
joe
joe
I fill the filter and let it soak in, so it won't drip. The pressure comes on much faster. This is many miles of wear right there. Seems like common sense. Lack of oil = wear.
I prefill the entire filter; holding the drainback flap open with an awl allows the exterior part to fill more quickly. I guess my medium-size filter takes about 15 seconds to fill.
They prefill them through the oil sender port and test run them on a stand.
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Doesn't everybody
Why....would anyone frown on this ? Dumb ! It's simply good practice when it's possible to do it (ie. vertically mounted filters).
I prefill the filter on my Chrysler 2.7 because it mounts straight up. I do not prefill the filters on the Cavalier and Sunfire because they mount horizontal and can not be prefilled.
You can not just fill the center tube. When you pour oil into the center tube (outlet side of the filter) it simply flows through the filter media and into the can-side (inlet side) of the filter.
The idea where I work is that if you prefill the filter you may possibly introduce contaminants into the system. It is also an issue there that new oil in the containers is already contaminated. This seems absurd to me. What about everyone else?
"... because they mount horizontal and can not be prefilled. "
Of course it can. I've done it. Have to be careful but yes you can pre-fill a horizontal filter.
Of course it can. I've done it. Have to be careful but yes you can pre-fill a horizontal filter.
Quote:
The idea where I work is that if you prefill the filter you may possibly introduce contaminants into the system. It is also an issue there that new oil in the containers is already contaminated. This seems absurd to me. What about everyone else?
That makes no sense, as you have figured out. If pouring oil into the filter is going to introduce contaminants, then pouring the same into the engine is also going to introduce contaminants.
Quote:
Quote:
The idea where I work is that if you prefill the filter you may possibly introduce contaminants into the system. It is also an issue there that new oil in the containers is already contaminated. This seems absurd to me. What about everyone else?
That makes no sense, as you have figured out. If pouring oil into the filter is going to introduce contaminants, then pouring the same into the engine is also going to introduce contaminants.
And that is what the individuals and publications in the company I work for seem to hit on- that the oil is already contaminated in the new container before you use it. Like I said, seems pretty absurd.
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If I were to argue their point, the contamination that you introduce via pouring it in the engine has to go through the filter before hitting the internals, while the oil that you pour into the center tube will not.
That's if I wanted to argue the point. I don't think it warrants an argument.
Many opt for bumping the engine a few times before allowing it to fire up.
That's if I wanted to argue the point. I don't think it warrants an argument.
Many opt for bumping the engine a few times before allowing it to fire up.
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