What about all the cars with cannister filters? They never get prefilled?
Prefilling oil filters: not good?
- Thread starter kilou
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Originally Posted By: callbay
I often read here on BITOG about vehicles with 200,000 miles 300,000 or even over 400,000 miles on them. I'll bet that most of them never prefill the filter. Can anyone back me up on this?
If you have ever tried to prefill a hard to get to filter, you will never do it again.
My Legend had 402K miles on the original engine. It had a cartridge type filter and couldn't be prefilled.
I often read here on BITOG about vehicles with 200,000 miles 300,000 or even over 400,000 miles on them. I'll bet that most of them never prefill the filter. Can anyone back me up on this?
If you have ever tried to prefill a hard to get to filter, you will never do it again.
My Legend had 402K miles on the original engine. It had a cartridge type filter and couldn't be prefilled.
Originally Posted By: ZZman
It is good if you can do it.
Is it going to kill your engine if you don't?....NO
I am sure almost every Instant Oil Change place does prefill them.
I doubt even the center tube. They don't need to. Reving the engine as soon they start it quickly brings up the oil pressure.
Back when I was prefilling, I had to keep adding more oil as it wicked out into the rest of the filter from the center tube. Just checked the remains of an L10193 I had laying around. Its center tube makes up 1/4 the area of the filter and about half the height meaning about an 1/8 of the volume of the filter. So just filling the center tube does very little.
I eventualy got smart and quit wasting time on something that most likely does more harm than good.
It is good if you can do it.
Is it going to kill your engine if you don't?....NO
I am sure almost every Instant Oil Change place does prefill them.
I doubt even the center tube. They don't need to. Reving the engine as soon they start it quickly brings up the oil pressure.
Back when I was prefilling, I had to keep adding more oil as it wicked out into the rest of the filter from the center tube. Just checked the remains of an L10193 I had laying around. Its center tube makes up 1/4 the area of the filter and about half the height meaning about an 1/8 of the volume of the filter. So just filling the center tube does very little.
I eventualy got smart and quit wasting time on something that most likely does more harm than good.
revving the engine as soon as it starts after changing the oil is a good way to create more wear.
Bingo! A major NO NO!!!!!!!!!
I remember doing that once early in my car days when my dad showed me how to change the oil. He was pist to say the least. Hollered at me to never rev it up just after changing it. He was a mech most of my childhood so I'm sure he's seen his share of engine messes.
I Caterpillar diesel tech who i respect very much told me he has seen numerous scored main bearings on the first journal to receive oil after the main oil filter. He attributes that to refilling the oil filters down the center hole. now most likely these were filled with bulk oil from a less than sealed tank.
with that said i still pre-fill all of my oil filters.
with that said i still pre-fill all of my oil filters.
CATs are refilled in the field and have tons of dirt everywhere, I'd bet that has something to do with their recommendations.
Did someone actually say REV THE ENGINE?
OMG. Somebody help me back up!
And to the lucky Legend owner: best [censored] car ever, earned their name!
OMG. Somebody help me back up!
And to the lucky Legend owner: best [censored] car ever, earned their name!
Originally Posted By: tom slick
CATs are refilled in the field and have tons of dirt everywhere, I'd bet that has something to do with their recommendations.
MY thoughts exactly. Having said that they cover their arses.
CATs are refilled in the field and have tons of dirt everywhere, I'd bet that has something to do with their recommendations.
MY thoughts exactly. Having said that they cover their arses.
Originally Posted By: SteveSRT8
Did someone actually say REV THE ENGINE?
Yeah I did. It was meant as a rebuttal to the comment that quick lubes prefill. Maybe I misunderstood the purpose of that. I thought the guy was meaning to support prefilling by suggesting the quick lubes do it. .
Did someone actually say REV THE ENGINE?
Yeah I did. It was meant as a rebuttal to the comment that quick lubes prefill. Maybe I misunderstood the purpose of that. I thought the guy was meaning to support prefilling by suggesting the quick lubes do it. .
Somewhere I have various lab samples of new oil with 3 to 4 ppm of dirt, 1 or 2 of iron.
And the oil from the filter goes to the bearings, while the rest that is filled drains (true, sometimes through the valve train) to the oil pan. I've pulled many oil bottle seals from oil pans
Oil professionals recommend filtering all oil put into all equipment.
And the oil from the filter goes to the bearings, while the rest that is filled drains (true, sometimes through the valve train) to the oil pan. I've pulled many oil bottle seals from oil pans
Oil professionals recommend filtering all oil put into all equipment.
Originally Posted By: 97f150
I dont know what difference filling the filter from the exit port with "dirty" clean oil will make considering that the other at least 3-6 quarts are going to be dumped into the engine without the benefit of filtration anyhow.
+1 I prefill through the center tube to preload the filter as much as possible before start up. I'd not put the effort into trying to fill the past the adbv into the small intake holes. I've never 'strained' the oil going into the oil fill cap, and have no intention of starting now.
Due respect to all those with a different opinion, but when I buy clean fresh oil, unless I've dropped something in it, I expect to be able to pour it in unstrained.
I dont know what difference filling the filter from the exit port with "dirty" clean oil will make considering that the other at least 3-6 quarts are going to be dumped into the engine without the benefit of filtration anyhow.
+1 I prefill through the center tube to preload the filter as much as possible before start up. I'd not put the effort into trying to fill the past the adbv into the small intake holes. I've never 'strained' the oil going into the oil fill cap, and have no intention of starting now.
Due respect to all those with a different opinion, but when I buy clean fresh oil, unless I've dropped something in it, I expect to be able to pour it in unstrained.
Originally Posted By: kilou
Any oil that goes into the center will reach the engine unfiltered
Umm, what about the other 4 quarts or so you pour right out of the bottle into the crankcase?
Any oil that goes into the center will reach the engine unfiltered
Umm, what about the other 4 quarts or so you pour right out of the bottle into the crankcase?
Depending on where the oil cap is located some of the valve train will get that oil but the bearings and such will get filtered oil.
Until my oils start getting visible chunks in them, I will continue to pre-fill my filters. Someone mentioned earlier that there may be some impurities in new oil that are only a few microns. Most oil filters only filter down to about 19 microns anyway, so that stuff will get run through the bearings no matter what.
Originally Posted By: tom slick
CATs are refilled in the field and have tons of dirt everywhere, I'd bet that has something to do with their recommendations.
The funny thing was it was a truck mechanic that told me this. Just works on trucks and trucks alone. Your statement dose very much hold merit in my book though.
CATs are refilled in the field and have tons of dirt everywhere, I'd bet that has something to do with their recommendations.
The funny thing was it was a truck mechanic that told me this. Just works on trucks and trucks alone. Your statement dose very much hold merit in my book though.
I used to prefill the oil filters on the Jetta. Since i started using Mobil One filters for some reason i cant prefill...either way i still dont get any valve train noise.
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