Recent Topics
Gift for young Army Cadet
by Snagglefoot. 12/16/18 12:33 AM
Instacart Grocery Delivery
by dogememe. 12/16/18 12:26 AM
My brother bought this...
by miden851. 12/15/18 09:12 PM
Watch out for scammers
by Chris142. 12/15/18 08:45 PM
15K OCI R53 2006 Mini Cooper S 144k
by dx92beater. 12/15/18 08:32 PM
Beneficial clean fuel.injectors in Ultrasonic Cleaner
by JLawrence08648. 12/15/18 06:54 PM
Back to Basics III
by MolaKule. 12/15/18 05:30 PM
Castrol Edge 0W40 vs. 5W40...Liqui Moly?
by TiGeo. 12/15/18 04:56 PM
Schumacher XCS15 voltage
by sweezy722. 12/15/18 04:19 PM
Solar battery tenders?
by slybunda. 12/15/18 04:10 PM
Bad Fuel Pressure Regulator.
by NICAT. 12/15/18 04:07 PM
Misfire = clogged cat
by Eric Smith. 12/15/18 04:00 PM
Cellphone Reliability
by Warstud. 12/15/18 03:29 PM
No email notification of replies anymore?
by atikovi. 12/15/18 03:07 PM
Newest Members
MikeMTL, AJ11, bandito, Spkrdctr, torchredone12
66691 Registered Users
Who's Online Now
23 registered members (ArrestMeRedZ, Char Baby, Astro14, bbhero, Blkstanger, 69Torino, 3 invisible), 947 guests, and 42 spiders.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums67
Topics295,135
Posts4,928,350
Members66,691
Most Online2,553
Oct 27th, 2018
Donate to BITOG
Previous Thread
Next Thread
Print Thread
Hop To
Stainless steel drain plugs in aluminum? #4610817
12/22/17 01:19 AM
12/22/17 01:19 AM
Joined: Sep 2009
Posts: 465
indiana
dakota99 Offline OP
dakota99  Offline OP
Joined: Sep 2009
Posts: 465
indiana
Okay so I guess the ocd is kicking back in but I recently replaced the drain plugs on two champion generators with stainless steel ones (304) and now Iím wondering if this will cause a corrosion issue? The blocks are aluminum and I know the two metals can cause galvanic corrosion in certain cases but is this one of them? Iíd hate to have the threads or something corrode and leak. That or have the plug seize in place.

The generators had from the factory some rubber hose setup where you could lower it into a pan to drain the oil but it was extremely slow. I decided to just unscrew the hose assembly and thatís when I had to purchase some plugs to go in their place like a typical engine would have. I have a feeling this is fine but I wanted a second opinion.

Re: Stainless steel drain plugs in aluminum? [Re: dakota99] #4610830
12/22/17 02:05 AM
12/22/17 02:05 AM
Joined: Jun 2017
Posts: 40
left cose, USA
resist Offline
resist  Offline
Joined: Jun 2017
Posts: 40
left cose, USA
Tha t's not OCD son/

Maybe talk to this guy and you two can go on a date or something?
https://bobistheoilguy.com/forums/ubbthreads.php/topics/4610757/Have_a_1/2"_hole,_wha

Re: Stainless steel drain plugs in aluminum? [Re: dakota99] #4610841
12/22/17 03:14 AM
12/22/17 03:14 AM
Joined: May 2012
Posts: 5,680
Fort Lauderdale, FL
DoubleWasp Offline
DoubleWasp  Offline
Joined: May 2012
Posts: 5,680
Fort Lauderdale, FL
Stainless plugs and bolts, in aluminum, and immersed in salt water is common in the marine industry and stuff manages to survive.

I would not worry, but if it does bother you, just swap on next oil change.


07 Lincoln Navigator M1 0w-40/FU
68 Charger R/T / Supercharged 440 VR1/DBL7349
07 Ram 3500 4x4 / Cummins 6.7 /DBL7349
17 Maserati GranTurismo Cabrio
Re: Stainless steel drain plugs in aluminum? [Re: dakota99] #4610896
12/22/17 06:11 AM
12/22/17 06:11 AM
Joined: Oct 2012
Posts: 4,825
Taiwan
Ducked Offline
Ducked  Offline
Joined: Oct 2012
Posts: 4,825
Taiwan
The threads are quite likely to be oiled.

Re: Stainless steel drain plugs in aluminum? [Re: dakota99] #4611090
12/22/17 10:24 AM
12/22/17 10:24 AM
Joined: Jun 2003
Posts: 5,951
Illinois
SHOZ Offline
SHOZ  Offline
Joined: Jun 2003
Posts: 5,951
Illinois
What kind of plugs were in there originally? SS is very stable.


2008 Hyundai Accent 1.6L 5 sp manual hatchback
2010 Hyundai Genesis Coupe Track 2L Turbo 6sp manual
Re: Stainless steel drain plugs in aluminum? [Re: dakota99] #4611107
12/22/17 10:43 AM
12/22/17 10:43 AM
Joined: May 2006
Posts: 4,045
Central Wisconsin
dwendt44 Offline
dwendt44  Offline
Joined: May 2006
Posts: 4,045
Central Wisconsin
Assuming you change the oil on occasion, there
won't be a problem.


There's no such thing as:
Too big of a battery,
Too large of a gas tank,
or too loud of a horn,
or too bright headlights.
Re: Stainless steel drain plugs in aluminum? [Re: dakota99] #4611153
12/22/17 11:24 AM
12/22/17 11:24 AM
Joined: Apr 2009
Posts: 2,933
Canada
boraticus Offline
boraticus  Offline
Joined: Apr 2009
Posts: 2,933
Canada
If that concerned put some grease on the threads of the plugs.

Considering that there will be virtually no water getting between the plugs and the block, and there will be residual oil there, I wouldn't be worried in the least.

Re: Stainless steel drain plugs in aluminum? [Re: dakota99] #4611160
12/22/17 11:27 AM
12/22/17 11:27 AM
Joined: Dec 2016
Posts: 7,171
Waco, TX
Linctex Offline
Linctex  Offline
Joined: Dec 2016
Posts: 7,171
Waco, TX
Millions and million and millions of aluminum oil pans and transmissions use steel drain plugs. No issues ever.


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: Stainless steel drain plugs in aluminum? [Re: dakota99] #4611206
12/22/17 12:10 PM
12/22/17 12:10 PM
Joined: Sep 2009
Posts: 465
indiana
dakota99 Offline OP
dakota99  Offline OP
Joined: Sep 2009
Posts: 465
indiana
Thanks for the input guys. The other half of me thought it would be fine as well, just wanted to make sure. I do believe the original fitting material was zinc plated steel or something to that effect. The oil gets changed every two years or 100 hours.

Re: Stainless steel drain plugs in aluminum? [Re: dakota99] #4611505
12/22/17 05:16 PM
12/22/17 05:16 PM
Joined: Jan 2009
Posts: 13,983
Illinois
tig1 Offline
tig1  Offline
Joined: Jan 2009
Posts: 13,983
Illinois
Most assuredly OCD in this application.

Last edited by tig1; 12/22/17 05:16 PM.

2007 Ford Fusion 235,000 miles
M1 0-20 EP
2017 Ford Fusion 60K
M1 0-20 EP
10,000 mile OCIs on both engines
M1 ATF and Valvoline LV
M1 10-30 in all OPE
MC filters

Re: Stainless steel drain plugs in aluminum? [Re: dakota99] #4612435
12/23/17 06:33 PM
12/23/17 06:33 PM
Joined: Jan 2009
Posts: 1,328
Watertown, New York
cronk Offline
cronk  Offline
Joined: Jan 2009
Posts: 1,328
Watertown, New York
Mild steel, stainless steel, both are fine.
Stainless fasteners can sometimes be victim of thread galling when threading into a harder steel, but an aluminum small engine case is softer than the stainless, so no worries.


2008 Ford F350
2003 Chevy Cavalier
2011 Nissan Quest
1986 Pontiac Trans Am
1940 Ford 9N Tractor
Amsoil lubes and filters!

BOB IS THE OIL GUY® Powered by UBB.threads™