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Can metal be in your oil with bad rod bearing? #4783060
06/10/18 01:17 PM
06/10/18 01:17 PM
Joined: Jun 2018
Posts: 1
Virginia
russharv63 Offline OP
russharv63  Offline OP

Joined: Jun 2018
Posts: 1
Virginia
If you have a bad rod bearing in your car will you find metal in your oil when you drain it? What about finding it in your oil filter also?

Re: Can metal be in your oil with bad rod bearing? [Re: russharv63] #4783062
06/10/18 01:24 PM
06/10/18 01:24 PM
Joined: Oct 2014
Posts: 13,739
Canyon County Idaho
CT8 Online content
CT8  Online Content

Joined: Oct 2014
Posts: 13,739
Canyon County Idaho
Probably and then it depends.


2015 F150 2.7
2018 F350 6.2
Re: Can metal be in your oil with bad rod bearing? [Re: russharv63] #4783073
06/10/18 01:36 PM
06/10/18 01:36 PM
Joined: Dec 2016
Posts: 8,454
Waco, TX
Linctex Offline
Linctex  Offline

Joined: Dec 2016
Posts: 8,454
Waco, TX
Metal "flakes" you can touch with your fingers is pretty bad if you dig them out of the filter pleats.

Drained oil that looks like dark gold spray paint in the sunlight is pretty normal, though it sure looks alarming.


"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: Can metal be in your oil with bad rod bearing? [Re: russharv63] #4783134
06/10/18 03:12 PM
06/10/18 03:12 PM
Joined: Nov 2006
Posts: 21,792
MA, Mittelfranken.de
Trav Offline
Trav  Offline

Joined: Nov 2006
Posts: 21,792
MA, Mittelfranken.de
Of course you can, lead overlay, copper in the middle and steel backing. Once you get through the overlays its metal on metal man.
Some have 2 layers some aluminum bearings have none but in every case if you have have metal to metal contact its going right into the oil.

Edit: That's the reason in UOA reports low or no lead, high copper and little aluminum is probably not an indicator of a bad bearing but more likely a cooler leeching copper. You have to go through one layer to get to the other.

Last edited by Trav; 06/10/18 03:15 PM.

ASE L1, Master. Deutsch Meisterbrief.
Re: Can metal be in your oil with bad rod bearing? [Re: russharv63] #4783355
06/10/18 08:28 PM
06/10/18 08:28 PM
Joined: Jan 2006
Posts: 1,149
Ruidoso, NM USA
ammolab Offline
ammolab  Offline

Joined: Jan 2006
Posts: 1,149
Ruidoso, NM USA
High lead and copper in my 60,000 mile S54 BMW engine meant only one thing.... Pull out the rod bearings.

They were shot. That $25 OA saved me an $11,000 engine.


1998 Jeep Cherokee
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2005 Kaw Ninja 250
1994 Jeep Wrangler 2.5L
2016 Chevy SS Sport Sedan
Re: Can metal be in your oil with bad rod bearing? [Re: ammolab] #4783516
06/11/18 01:22 AM
06/11/18 01:22 AM
Joined: Nov 2006
Posts: 21,792
MA, Mittelfranken.de
Trav Offline
Trav  Offline

Joined: Nov 2006
Posts: 21,792
MA, Mittelfranken.de
Exactly, the layer of lead was though and the rods were now running in the copper layer.
High lead is scary but if caught very early with UOA can sometimes be held in chack with higher viscosity oils and/or zinc additives (yes zinc isn't only for flat tappet cams, bi/tri metal bearing love the sacrificial layer) but once the lead has been gone though its time to open her up as you found out.


ASE L1, Master. Deutsch Meisterbrief.
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