Mechanic installed filter without filling with oil

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Originally Posted By: spasm3
What i do think is important is wiping the cut threads of the filter with a cloth or paper towel. Make sure you don't leave any lint behind but i always get silver looking metal dust off the threads.


I`ve always done this as well. I always make sure I get all of the metal dust stuff off the threads before I fill and install.
 
My 2011 Prius is the first car I've serviced that will have a very nasty rattle for 2-3 sec at the initial post-oil change start-up. Unfortunately, there is no way of pre-filling the oil filter since it is a cartridge.
 
Originally Posted By: Artem
Originally Posted By: Papa Bear
Originally Posted By: mr_diy
Absolutely pre-fill your filter where possible, when mounting is straight up. It is one of those simple steps that makes it worth the your DIY time. I find you need to fill several times to allow the oil to get through the media, probably 2 minutes of time. You also have a better reading on the fill level.


?????

Ask GMBoy if they prefill the filters at the factory.

I worked at Chrysler Canada engine plant in the 1960's and the filters weren't prefilled.

I have never prefilled a filter nor seen it done at the dealer or anywhere else.


Why would an assembly plant prefill oil filters? I'm sure they know that the engine will be "fine" and will last just barely past the warranty period. Beyond that though, who cares, right?

It takes time to prefill oil filters and time = money for an assembly plant. They overlook something as small as this.

Same for a dealership.

If I can help get the oil flowing faster by prefilling the filter, I'll gladly do it.

Yeah, and I know taxis with 500k+ miles on the original engine. How much you want to bet they prefill filters? Ill bet my next check they dont.
Its a waste of time that adds more risk of a mess and puts unfiltered oil on the clean side of the filter.
 
Last edited:
Originally Posted By: GearheadTool
Originally Posted By: Virtuoso
Agree with the above posters.. the extreme majority of people (including mechanics) do not pre-fill. There are some big diesel engines that want a pre-filled filter during a change - and maybe he would do it then - but it's not spec'd for standard gassers.


I pre-fill, but I like watching my oil pressure idiot light shut off a second sooner after a change. But that's about the only benefit. The downsides could be: making a mess, and sending unfiltered oil into your engine (we're filling the exit port of the filters).


My oil light never came on even after an oil change with a "dry" filter?

Hot oil moves fast.

I don't even think I have seen the light blip on, if I ever changed the oil COLD, actually... (I usually let it at least get warm, meaning, let it run as I jack up the car. A new habit I have gotten into.)


And not a very good one. Drive the car,get oil hot. Let it cool as you jack it up. Then change the oil.
Timing belt snap yet?
 
Originally Posted By: Colt45ws
Originally Posted By: Artem
Originally Posted By: Papa Bear
Originally Posted By: mr_diy
Absolutely pre-fill your filter where possible, when mounting is straight up. It is one of those simple steps that makes it worth the your DIY time. I find you need to fill several times to allow the oil to get through the media, probably 2 minutes of time. You also have a better reading on the fill level.


?????

Ask GMBoy if they prefill the filters at the factory.

I worked at Chrysler Canada engine plant in the 1960's and the filters weren't prefilled.

I have never prefilled a filter nor seen it done at the dealer or anywhere else.


Why would an assembly plant prefill oil filters? I'm sure they know that the engine will be "fine" and will last just barely past the warranty period. Beyond that though, who cares, right?

It takes time to prefill oil filters and time = money for an assembly plant. They overlook something as small as this.

Same for a dealership.

If I can help get the oil flowing faster by prefilling the filter, I'll gladly do it.

Yeah, and I know taxis with 500k+ miles on the original engine. How much you want to bet they prefill filters? Ill bet my next check they dont.
Its a waste of time that adds more risk of a mess and puts unfiltered oil on the clean side of the filter.


I only use new oil in my filters and OC.
I suppose some don't oil the filter gasket because it's messy.
 
Originally Posted By: The Critic
My 2011 Prius is the first car I've serviced that will have a very nasty rattle for 2-3 sec at the initial post-oil change start-up. Unfortunately, there is no way of pre-filling the oil filter since it is a cartridge.


The GM I change has a vertical cartridge, so it gets filled.
I really like the Prius cartridge filter design with no or minimal metal possible without the e-core problems. My experience with cartridge filters is very even pleats even on low cost filters and easy to inspect when used. The old Toyota side engine canister is a messy change.
 
Originally Posted By: Colt45ws
Its a waste of time that adds more risk of a mess and puts unfiltered oil on the clean side of the filter.


All our small block Chevs had the filters prefilled. None of the Town Cars had the filters prefilled. With even a slight amount of caution, it wasn't messy, but I doubt it added anything to engine life, either. And a dry filter didn't harm any of the Fords in the least.
 
Originally Posted By: Garak
None of the Town Cars had the filters prefilled. And a dry filter didn't harm any of the Fords in the least.
How do you know? They might have gone only 450k miles whereas if you pre-filled the filters they may have gone 500k.
grin2.gif
 
Pre-filling the filter certainly can't hurt anything. If it was a big deal, the service manuals from every car maker would have instructions to pre-fill the filter. But I've never seen it talked about in any service manual I've ever had. IMO, I doubt it makes any real difference. I've monitored the oil pressure light in a few vehicles I've had after changing the oil & filter, and the light might go out 1 second sooner if I pre-filled the filter vs not.

There should be plenty of oil film left on all the bearings, etc to protect the engine for a few seconds while the oil pressure and flow comes up after starting the engine with a dry oil filter.
 
I prefill on the Cummins, which has a good size filter with the threads at the top. All others I put on dry.
 
I've changed more oil filters on gasoline engines than I can reliably estimate over the last 45 years. At first, in my father's shop in the 1960s and in recent decades on just my own cars and trucks. I've never prefilled a filter and I've never had a problem because of it.

I remember two problems ever with filters - one, a cheap filter bought at KMART in about 1968, had a pinhole leak in the welded seam of the case and sprayed oil when the engine was started. Another time, I filled an engine that in hindsight must have been heavily sludged with something called Quaker State Quality Blend and the new filter - I don't remember the brand - clogged up the same day and caused lifter noise. A new filter fixed the problem.

Never a problem because a filter wasn't prefilled, though.

The mechanic mentioned by the OP did everything correctly and by the book as far as I'm concerned. The OP should have not a worry in the World.
 
lots of horizontally mounted oil filters dont even retain the oil overnight so it doesnt even matter

i never pour oil into the filter when installing a new filte
 
Originally Posted By: mr_diy


I only use new oil in my filters and OC.
I suppose some don't oil the filter gasket because it's messy.

just because it is new, does not mean it is clean.
 
The only time I filled a filter was a parking lot filter swap and oil thickening to limp a car with bad bearings home, I filled it with AAP oil treatment. Mainly because I had nothing better to do while my dad muscled the old filter off.
 
No big deal. I used to do it all the time (20 years?) until the crazy people here made me start filling them first. We are a bit psycho here IMO. I mean really, a forum on motor oil? Give me a break. It is surprising we have wives & girlfriends.

It's a sickness. Don't become infected.
 
Originally Posted By: ufbbc
No big deal. I used to do it all the time (20 years?) until the crazy people here made me start filling them first. We are a bit psycho here IMO. I mean really, a forum on motor oil? Give me a break. It is surprising we have wives & girlfriends.

It's a sickness. Don't become infected.


You have a wife & girlfriend? Or even one of the aforementioned?
 
I was almost sane until I found this site.
A forum on motor oil?, Give me a break!
Now I check this site almost every day--- It is a sickness!
 
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