2nd blown oil filter gasket and coolant mixing with oil? Help with isolating the causes?

SkylabTech86IDI

Full Access Member
Joined
Aug 31, 2022
Posts
252
Reaction score
157
Location
Southeast US
You must be registered for see images attach


Hey guys I have two separate problems going on:

1) 2 oil filter gaskets have been blown. I’m not hulk tightening the oil filters on. I’m using the motorcraft FL-1994A Powerstroke oil filters, and I’m Oil in the gasket thoroughly before Installing.
I’ll put a third replacement filter on and I’ll install it kinda loose-snug and gradually hand tighten as Needed while the engine is running. Maybe that’ll fix me.

2) The bigger problem:
Because of the blown oil filter gasket, I was able to see milky oil pouring out of the truck (again).

3 days ago I installed a new oil filter and then added about 8 liters of oil to the crankcase. Friday I did some cranking but didn’t start it or run it.

Today, I started it and saw that the oil with 0 run time but spent 3 days sitting in the block is pretty milk shakey. I Shut the motor down after about 2 mins of run time, just long enough to verify that oil was leaking from the blown oil filter gasket.



Before I start throwing parts at it, I’m looking into the service manual to read more on the oiling system and possible areas of coolant mix. So, Any ideas on what could be causing this? Is there a way to wisely troubleshot and isolate the troublemaker here?

Could it be:
Heater exchanger?
Failed Oil cooler o-rings?
cavitation?
Head gasket?

The radiator doesn’t seem low on coolant. Maybe the motor hasn’t gotten hot enough to open thermostat? Keep in mind that because of the oil contamination problem I have less than 6-8 total minutes of run time on the motor since buying it.

TIA
You must be registered for see images attach


You must be registered for see images attach



My brother seems to think that rainwater might be contaminating the oil somewhere around the intake valley pan. He thinks this because the firewall gasket is wasted and let’s rainwater in where it then collects in the valley pan.

Which, now that I type this think could be possible. If the CDR valve throat isn’t seated all the way or if the gasket is bad, perhaps rainwater is getting in through there
 
Last edited:

gnathv

Full Access Member
Joined
Oct 18, 2007
Posts
1,048
Reaction score
522
Location
Athens, Al
I’d hand tighten as tight as possible, there’s a lot of vibration going on it may be backing the filter off and allowing gasket to push out. If it’s still blowing out I’d check my actual oil pressure with a gauge (not dash oil gauge). There is a valve in the oil filter head, I know it will cause low oil pressure if it sticks open, not sure what it will do if it’s stuck closed. On the water in oil, after it has sat several days, loosen oil drain plug and catch what is dripping out. Water will be at bottom of pan. See if it seems to be antifreeze or rainwater. Then go from there.
 

hacked89

Full Access Member
Joined
May 30, 2018
Posts
1,740
Reaction score
2,330
Location
Bucks County PA
You need to buy a new cowl seal. For the filter most IDIs I've had hand tight doesn't work like other engines I've had to tighten them down. Typically how how oil cooler rings blow you'll get oil in your coolant and vice versa. Cavitation maybe. Head gasket no. Heater exchange no.
 

1mouse3

Full Access Member
Joined
Nov 28, 2013
Posts
1,367
Reaction score
948
Location
il
What I suspect is cause of the blowing of the oil filter o-ring is this regulator is stuck. You will have to pull the cooler to get at it, in the rear head there is a staked in bit you have to get out with say a chisel. At this point you might want to think about replacing the o-rings for the cooler if you dont know there age. When this valve is stuck closed it can fire off oil fillers and cause high oil presure.


You must be registered for see images attach
 

Nero

HD Diesel nut
Joined
Jan 3, 2022
Posts
2,198
Reaction score
2,194
Location
OR
I second it's probably a stuck regulator. Before fully tearing it apart, you could put a mechanical gauge on it, see what it reads while cranking.

As for the filter, the good ol' snug then 3/4 turn and I've never had a leaker.
 

Jesus Freak

Full Access Member
Joined
Apr 3, 2022
Posts
3,206
Reaction score
3,610
Location
Crestview, FL
The regulator makes sense. As far as a cowl seal, I put a rubber floor mat over my air filter housing and have it draped over the back. It's cheap and you probably have one available.
 

Attachments

  • IMG_20220905_182142.jpg
    IMG_20220905_182142.jpg
    320.3 KB · Views: 17

SkylabTech86IDI

Full Access Member
Joined
Aug 31, 2022
Posts
252
Reaction score
157
Location
Southeast US
Thanks all
You must be registered for see images attach


Ordered oil cooler kit, and new cowl seal.
The regulator makes sense. As far as a cowl seal, I put a rubber floor mat over my air filter housing and have it draped over the back. It's cheap and you probably have one available.
That’s crafty - I’ll steal one from my wife’s car. She won’t miss it

I second it's probably a stuck regulator. Before fully tearing it apart, you could put a mechanical gauge on it, see what it reads while cranking.

As for the filter, the good ol' snug then 3/4 turn and I've never had a leaker.
I’ll head towards harbor freight and get one of their $30 oil pressure test kits.




Should the crankcase be flushed with diesel/oil mix to get the residual coolant out of the block?
You need to buy a new cowl seal. For the filter most IDIs I've had hand tight doesn't work like other engines I've had to tighten them down. Typically how how oil cooler rings blow you'll get oil in your coolant and vice versa. Cavitation maybe. Head gasket no. Heater exchange no.

cavitation would be less than ideal…
 

Nero

HD Diesel nut
Joined
Jan 3, 2022
Posts
2,198
Reaction score
2,194
Location
OR
Not bad looking.
When cold the oil pressure can be high, like 40psi and such. When at OP temp, mine and my dad's truck sit about 15-17psi at idle.

As for cleaning the block, I wouldn't bother. Coolant or water will mostly evaporate during normal running.
 

SkylabTech86IDI

Full Access Member
Joined
Aug 31, 2022
Posts
252
Reaction score
157
Location
Southeast US
The regulator makes sense. As far as a cowl seal, I put a rubber floor mat over my air filter housing and have it draped over the back. It's cheap and you probably have one available.
I like your ford tractor sticker on the air cleaner - that isn’t a factory replica sticker is it Jesus?
 

SkylabTech86IDI

Full Access Member
Joined
Aug 31, 2022
Posts
252
Reaction score
157
Location
Southeast US
Not bad looking.
When cold the oil pressure can be high, like 40psi and such. When at OP temp, mine and my dad's truck sit about 15-17psi at idle.

As for cleaning the block, I wouldn't bother. Coolant or water will mostly evaporate during normal running.
Good reference point, thank you. Maybe instead of buying an Amazon kit, That $30 is better we’ll spent buying a dedicated gauge. Like this one
You must be registered for see images attach
 
Top