Home > VansAirForceForums

-Advertise in here!
- Today's Posts | Insert Pics

Keep VAF Going
Donate methods

Point your
camera app here
to donate fast.

Old 07-07-2022, 10:29 AM
Rick_A's Avatar
Rick_A Rick_A is offline
Join Date: Oct 2005
Location: Jacksonville, FL
Posts: 1,627
Default Do you safety your oil filter?

The thread about re-useable oil filters got me thinking about the practice of using safety wire on the oil filter and if it is really necessary.

I use to do it all the time but I rarely do it any more. It seems like a waste of time and effort. It always takes a lot of force to loosen a filter that has been torqued to 15 ft lbs.

Is this just a out dated practice that's done because "it's the way it's always been done"? Maybe it dates back to a time when filters were more apt to loosen on their own?

(I was going to create a poll but couldn't figure out how to do it)
Rick Aronow,
Flying 7A Slider;
Jacksonville, FL
Reply With Quote
Old 07-07-2022, 10:32 AM
MacCool's Avatar
MacCool MacCool is offline
Join Date: Aug 2020
Location: central Minnesota
Posts: 1,186

I always safety wire the oil filter. AFAIK, it's still considered "best practice" in the aviation maintenance world. I'm not near expert enough to know whether or not it's necessary, but I try to be careful to not let the "Experimental" category lead me to cut corners and deviate from accepted safety practice.
RV-9A, 2011, bought flying
IO-320D1A (factory new), C/S
IFR equipped
AFS 5400/3500, G5, IFD440 navigator,
bunch of other stuff

Last edited by MacCool : 07-07-2022 at 10:34 AM.
Reply With Quote
Old 07-07-2022, 10:40 AM
Walt's Avatar
Walt Walt is offline
Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 6,792

16-18 ft/lbs is the correct #.
I safety customers filters so they don't freak out, but not my own.
I suspect some folks may not want to publicize their use of 'non-standard' practices, however the latest "trend" of using 'non-approved' cleanable filters makes it irrelevant, I guess?
Walt Aronow, DFW, TX (52F)

EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 2000+ hrs, New Titan IO-370, Bendix Mags, MTV-9 prop
Website:, Email:, Cell: 972-746-5154

Last edited by Walt : 07-07-2022 at 10:46 AM.
Reply With Quote
Old 07-07-2022, 10:53 AM
rv8ch's Avatar
rv8ch rv8ch is offline
Join Date: Feb 2005
Location: LSGY
Posts: 4,877

This comes up from time to time. It seems that at least one helicopter manufacturer no longer recommends safety wire on the oil filter.

It's pretty easy to do, adding about 2 mins to the oil change process. I'm not really seeing a downside, but I've never read a crash report that was caused by the oil filter coming off.
Mickey Coggins
Reply With Quote
Old 07-07-2022, 11:26 AM
rv6n6r's Avatar
rv6n6r rv6n6r is offline
Join Date: May 2007
Location: Gearhart Oregon
Posts: 527

It would be interesting to see a poll on this.
Personally I always do it even though I broke out the "easy" (top) safety wire hole on the engine casting years ago, and now I always have to do it with the "impossible" (bottom) one. Just because, I'd feel pretty stupid if I didn't and the thing came loose and all the oil came out.
Randall Henderson
RV-6 / O-360 / CS, 1600+ hrs, 1st flight Sept. 1999
Outstanding Workmanship OSH 2000, Craftsmanship award AWO 2000
Airport committee chair & AOPA ASNV for Seaside, OR Municipal (56S),
Last Donated August 2022
Reply With Quote
Old 07-07-2022, 11:31 AM
Aviator's Avatar
Aviator Aviator is offline
Join Date: Mar 2006
Location: Chattanooga, TN ( Chattanooga)
Posts: 206

Do they safety wire a filter on the Harley Davidson? Trust me, noting vibrates and shakes more than those things.
RV 10. N4371
Chattanooga, TN.
EAA # 706863.
Exempt, but donated 2022.
Reply With Quote
Old 07-07-2022, 12:01 PM
swjohnsey swjohnsey is offline
Join Date: Nov 2018
Location: Kingsville, TX
Posts: 495

I don't. I follow the K&N recommendation a tighten touching plus 3/4 turn.
Reply With Quote
Old 07-07-2022, 12:06 PM
Bavafa Bavafa is offline
Join Date: Oct 2007
Location: Sacramento, CA
Posts: 4,004

Originally Posted by swjohnsey View Post
I don't. I follow the K&N recommendation a tighten touching plus 3/4 turn.
I think 3/4 turn is way too much. I go 1/4 turn which comes to about 16-17ft/lb. And I always use safety wire. Considering the consequences, it is worth the additional 5 minutes work.
N825SM RV7A - IO360M1B - SOLD
N825MS RV14A - IO390 - SOLD
N258SM RV14A - IO390EXP119 - Out of Paint shop & flying
Dues paid
Reply With Quote
Old 07-07-2022, 12:16 PM is offline
Join Date: Jan 2017
Location: Battle Ground WA
Posts: 588

Here we go again.
""""Anybody got the popcorn.""""
No, I do not and have driven over a million miles (road) without a safety wire and have never had it happen or heard of anybody loosing a filter. And lightening may strike me to night, But, I use automotive filters on my I0360 too. They have a higher burst pressure than the "aircraft" filters.
If I ever sell my airplane I will put an aircraft filter on it and safety wire for looks.
That said, it really only takes a few minutes to do.
And with an automotive filter it is even faster, using the hose clamp method.
Unless some guy named "Willy" I know didn't even tighten it in the first place.
Your luck may vary Art
Reply With Quote
Old 07-07-2022, 12:30 PM
FireMedic_2009 FireMedic_2009 is offline
Join Date: Nov 2016
Location: Tampa, FL
Posts: 284
Default Oil filter burst pressure

If you worry about an oil filter bursting you have other major problems going on with the engine
RV-6A IO-320 FP sold
RV3B O-320 160hp
Donated 2018 and continue annually
Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

All times are GMT -6. The time now is 05:26 PM.

The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.