Don't pre-fill your oil filter?!

[EMD_Driver]

There's a pretty smart guy around here, that explains how to prime your filter *After* you install it on the vehicle.

Kudos to you @FORD BOSS ME ! I learned something today..

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[grumpyunk]

If I have a vertically installed filter, I may just continue what I have in the past, fill before installation. Not every vehicle (older ones) has the 'clear flood mode', so cannot be filled thataway.
tom

 

[EMD_Driver]

If I have a vertically installed filter, I may just continue what I have in the past, fill before installation. Not every vehicle (older ones) has the 'clear flood mode', so cannot be filled thataway.
tom

This guy also does repair videos and explains things in plain english. This is a 6.7 diesel, but he very clearly explains why it's a bad idea to pre-fill the oil filter. Skip to 11:49 for his explanation..

 

[710-oil-614]

I have never pre-filled a filter in my life. Impossible to do on the subaru as it is vertical with the threaded and hole sides down.

That being said - I've changed oil on dozens if not hundreds of models and I have never once prefilled a filter.

 

[Big_T]

I have never pre-filled a filter in my life. Impossible to do on the subaru as it is vertical with the threaded and hole sides down.

That being said - I've changed oil on dozens if not hundreds of models and I have never once prefilled a filter.

I've owned two Subaru's and still own one. I always add a few ounces of oil to the filter, just enough to saturate the filter media. Never lost a drop installing it onto the engine.

Is it required? Absolutely not. Does it help on the first start after the oil change? Possibly. Does it hurt anything? Absolutely not.

 

[710-oil-614]

I've owned two Subaru's and still own one. I always add a few ounces of oil to the filter, just enough to saturate the filter media. Never lost a drop installing it onto the engine.

Is it required? Absolutely not. Does it help on the first start after the oil change? Possibly. Does it hurt anything? Absolutely not.

First - what parts of NC? I have property in Boone.

Definitely put some oil around the rubber gasket to absorb so it seats properly, but never in the filter. My Outback had 186k when I traded it in and my Forester has 95k and although it eats oil like a fat kid loves cake (has since day 1 - known issue with piston rings) she's purring along still.

Even more so in a boxer engine without a dry sump oil system - once the engine is off gravity does its thing and the oil falls back into the pan. When you start a I4 or V6 engine the sump will splash oil on the cylinder bores coating them - so not filling my oil filter isn't a major deal.

 

[My1stFord]

Always prefilled my oil filter (Purolator Pure One) on the inline 6 of my old YJ. I've never changed my own oil since then. Never had an engine issue with that vehicle. Tranny is another story.

 

[Big_T]

First - what parts of NC? I have property in Boone.

Definitely put some oil around the rubber gasket to absorb so it seats properly, but never in the filter. My Outback had 186k when I traded it in and my Forester has 95k and although it eats oil like a fat kid loves cake (has since day 1 - known issue with piston rings) she's purring along still.

Even more so in a boxer engine without a dry sump oil system - once the engine is off gravity does its thing and the oil falls back into the pan. When you start a I4 or V6 engine the sump will splash oil on the cylinder bores coating them - so not filling my oil filter isn't a major deal.

About 90 miles southeast.

I've done hundreds of oil changes on horizontally opposed aircraft piston engines and have never pre-filled an oil filter on any of them, so there is no argument from me, I only stated how I do it on my personal automobiles. I've never paid to have an oil change done for over 50 years and pre-filling is something I do to my own oil filters. As I said above, it doesn't hurt a thing.

 

[FORD BOSS ME]

If I have a vertically installed filter, I may just continue what I have in the past, fill before installation. Not every vehicle (older ones) has the 'clear flood mode', so cannot be filled thataway.
tom

Most actually do have clear flood mode even older ones, it's been a staple with MANY manufacturers especially Ford

Diesels don't
Hybrids I will work on

Push button start does
Manual vehicles do
Standard key vehicles do

Even big companies like caterpillar have recommended the ceasing of prefilling due to contamination

Now if it's out of a bottle sure I get it do your thing

There is more than one way to get the job done

I'm holding nobody hostage forcing them to change just offering a different option

 

[FORD BOSS ME]

First - what parts of NC? I have property in Boone.

Definitely put some oil around the rubber gasket to absorb so it seats properly, but never in the filter. My Outback had 186k when I traded it in and my Forester has 95k and although it eats oil like a fat kid loves cake (has since day 1 - known issue with piston rings) she's purring along still.

Even more so in a boxer engine without a dry sump oil system - once the engine is off gravity does its thing and the oil falls back into the pan. When you start a I4 or V6 engine the sump will splash oil on the cylinder bores coating them - so not filling my oil filter isn't a major deal.

Some oil may be beneficial on some where others isn't

Ford has noticed on the higher reving 5.2L and the 5.0 v8s they want them installed dry no oil on oring - vibration helps walk the filters off and thus creates oil leaks

Some do require it and some don't

 

[Big_T]

Some oil may be beneficial on some where others isn't

Ford has noticed on the higher reving 5.2L and the 5.0 v8s they want them installed dry no oil on oring - vibration helps walk the filters off and thus creates oil leaks

Some do require it and some don't

Similar to Continental aircraft engines some years ago, they specified a silicone grease on the oil filter gasket and found they were loosening up, so changed back to clean oil on the gasket.

 

[Comet71]

I have never pre-filled a filter in my life. Impossible to do on the subaru as it is vertical with the threaded and hole sides down.

That being said - I've changed oil on dozens if not hundreds of models and I have never once prefilled a filter.

same!

 

[AnchorChain]

Some oil may be beneficial on some where others isn't

Ford has noticed on the higher reving 5.2L and the 5.0 v8s they want them installed dry no oil on oring - vibration helps walk the filters off and thus creates oil leaks

Some do require it and some don't

hmm never heard of that with the filter on the 5.0 and I’ve been on tons of pages and forums. Never an issue with the 5 5.0s I’ve had .

 

[Arukoru]

I have never pre-filled a filter in my life. Impossible to do on the subaru as it is vertical with the threaded and hole sides down.

That being said - I've changed oil on dozens if not hundreds of models and I have never once prefilled a filter.

Same, I've never heard of this particular old wives tale before but it sounds like just that.

 

[Sjbuck2021]

Same, I've never heard of this particular old wives tale before but it sounds like just that.

I've prefilled on horizontal filters but there is enough residual oil left in the motor before it starts circulating not to cause an issue.

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