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Flaking aluminum oil pan #4508172
09/05/17 02:56 PM
09/05/17 02:56 PM
Joined: Jul 2009
Posts: 20
Canada
Boosted240 Offline OP
Boosted240  Offline OP
Joined: Jul 2009
Posts: 20
Canada
About a week ago I drained my oil and pulled the lower oil pan, saw that the residual oil in the pan seemed to have a fine glitter to it in the sunlight. I cut open the filter and found about a dozen <1mm diameter flakes in the pleats that were non magnetic. I luckily sampled the oil drain so I sent it off to Blackstone last week. The report came back with nothing too concerning. Been scratching my head for days. Today i was cleaning up the gasket surface of the upper aluminum oil pan to reinstall the lower portion I removed last week. After removing some varnish with a towel soaked in brake clean I came across what I believe to be the source of the flakes. It appears to be a rough casting defects from the factory, I also was wonder if high detergent synthetic oil also accelerated the flaking? I scratched a little off with a pick and it produced identical flakes to the ones I found in the filter. What kind of aluminum casting anomaly is this?




Re: Flaking aluminum oil pan [Re: Boosted240] #4508188
09/05/17 03:28 PM
09/05/17 03:28 PM
Joined: Oct 2005
Posts: 4,399
Atlanta
DuckRyder Offline
DuckRyder  Offline
Joined: Oct 2005
Posts: 4,399
Atlanta
If Iím looking at the right area it almost looks like the tool which tightened the upper pan got into the casting...


Robert
  • 2007 Toyota Prius Touring
  • 2005 Honda Civic Sedan
  • 1972 Ford F100
Re: Flaking aluminum oil pan [Re: Boosted240] #4508224
09/05/17 04:19 PM
09/05/17 04:19 PM
Joined: Jul 2009
Posts: 20
Canada
Boosted240 Offline OP
Boosted240  Offline OP
Joined: Jul 2009
Posts: 20
Canada
Hmm quite possible. The area left behind from the flaked aluminum is rough, like it was sand casted.

Last edited by Boosted240; 09/05/17 04:30 PM.
Re: Flaking aluminum oil pan [Re: Boosted240] #4508300
09/05/17 06:01 PM
09/05/17 06:01 PM
Joined: Dec 2016
Posts: 6,232
Waco, TX
Linctex Offline
Linctex  Offline
Joined: Dec 2016
Posts: 6,232
Waco, TX
What engine/vehicle?


"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: Flaking aluminum oil pan [Re: Boosted240] #4508311
09/05/17 06:16 PM
09/05/17 06:16 PM
Joined: Mar 2017
Posts: 5,435
Soviet State of Washington
PimTac Offline
PimTac  Offline
Joined: Mar 2017
Posts: 5,435
Soviet State of Washington
From that affected area, go down just past that ridge. Looks like pits where something hit the pan. Same tool?


2017 Mazda CX-5 Grand Touring

Valvoline Advanced Synthetic 0w20
Mobil 1 M108A EP filter

Re: Flaking aluminum oil pan [Re: Linctex] #4508634
09/06/17 01:02 AM
09/06/17 01:02 AM
Joined: Jul 2009
Posts: 20
Canada
Boosted240 Offline OP
Boosted240  Offline OP
Joined: Jul 2009
Posts: 20
Canada
Originally Posted By: Linctex
What engine/vehicle?


Nissan SR20DET

Re: Flaking aluminum oil pan [Re: Boosted240] #4508642
09/06/17 01:27 AM
09/06/17 01:27 AM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline
Merkava_4  Offline
Joined: Jan 2007
Posts: 17,501
Clovis, CA
The flakes might not even be metal; they might be vinyl or some other non-metallic coating.

Re: Flaking aluminum oil pan [Re: Merkava_4] #4508655
09/06/17 02:10 AM
09/06/17 02:10 AM
Joined: Mar 2017
Posts: 5,435
Soviet State of Washington
PimTac Offline
PimTac  Offline
Joined: Mar 2017
Posts: 5,435
Soviet State of Washington
What Merk just said prompts me to wonder if any additives were used in this Nissan? Cerakote etc?


2017 Mazda CX-5 Grand Touring

Valvoline Advanced Synthetic 0w20
Mobil 1 M108A EP filter

Re: Flaking aluminum oil pan [Re: Boosted240] #4508760
09/06/17 07:37 AM
09/06/17 07:37 AM
Joined: Oct 2005
Posts: 4,399
Atlanta
DuckRyder Offline
DuckRyder  Offline
Joined: Oct 2005
Posts: 4,399
Atlanta
It is probably going to be tough to get it clean enough, but if it is in fact a casting porosity you might be able to seal it with Glyptal. If you can find 1201B it is thicker. Iíve never tried to use it on Aluminum or on a non hot tanked used part though.


Robert
  • 2007 Toyota Prius Touring
  • 2005 Honda Civic Sedan
  • 1972 Ford F100

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