Fiesta st OIL CHANGE METAL FLAKES CAUSE?

[Intuit]

Traditionally, the only purpose of the downstream oxygen sensor is to confirm catalytic converter function. The ECU does not make any changes to engine operating parameters based on the downstream oxygen sensor. I assume that is the case with our systems as well. They system will of course, make adjustments based upon the upstream oxygen sensor.

Metal shavings at 50k is something to be concerned about, since it is far, far, far, far, far, far outside the break in period. Since this is related to the modifications done on the engine, it may be prudent to back off on the power, possibly even undoing the modifications and returning to stock. Besides a complete tear-down and inspection, it may be possible to just pull oil pan, as a first step toward inspecting the crank main bearings.

Regarding the filter, the only way to achieve "high" flow, is to either increase media surface area, or reduce the effectiveness of the filter, or both.

 

[M-Sport fan]

Regarding the filter, the only way to achieve "high" flow, is to either increase media surface area, or reduce the effectiveness of the filter, or both.

^^^THIS!
(Race teams know that their PURE race engines will be rebuilt after every event, IF allowed by their sanctioning bodies, and not sealed for a given period of time/season, so they can afford to use a lower efficiency, much higher flow rate filter on those engines. )

But yes, there should NOT be large shavings of metal in one's oil, regardless of whether or not the filter is catching them.

Does the oil at change time smell REALLY STRONGLY of fuel, and seem MUCH thinner than when it was installed?

 

[Tatedup33]

^^^THIS!

But yes, there should NOT be large shavings of metal in one's oil, regardless of whether or not the filter is catching them.

Does the oil at change time smell REALLY STRONGLY of fuel, and seem MUCH thinner than when it was installed?

Yes but no smell in the oil or much thinner and there not large shavings rhere small but regardless

 

[Tatedup33]

Traditionally, the only purpose of the downstream oxygen sensor is to confirm catalytic converter function. The ECU does not make any changes to engine operating parameters based on the downstream oxygen sensor. I assume that is the case with our systems as well. They system will of course, make adjustments based upon the upstream oxygen sensor.

Metal shavings at 50k is something to be concerned about, since it is far, far, far, far, far, far outside the break in period. Since this is related to the modifications done on the engine, it may be prudent to back off on the power, possibly even undoing the modifications and returning to stock. Besides a complete tear-down and inspection, it may be possible to just pull oil pan, as a first step toward inspecting the crank main bearings.

Regarding the filter, the only way to achieve "high" flow, is to either increase media surface area, or reduce the effectiveness of the filter, or both.

Yes but my brither is at 17k mikes and same result

 

[Tatedup33]

The intercooler wouldn't cause and issue. But running a catless down pipe might if you didn't do something about the rear 02 sensor

Its a cobb high flow catted downpioe amd i already got my cel from the o2 sensor on WoT is when it comes on afyer clearing it i didnt use a defouler becaise tue tune removes the cel

 

[Intuit]

Even 17k is well outside the break in period. Also meant to add, make sure you clean the oil pan between changes. Otherwise that sparkly stuff in the bottom could be from several changes ago.

 

[CSM]

Bringing this one back from the dead.

I did an oil change at 90k miles, and found some flakes (silver and copper looking) in the oil. I wasn't 100% sure if it was from my engine oil, or from the oil filter as I removed it with a tool and it could have damaged it.

Fast forward to 92k miles - I just did another oil change. This time checked the oil for flakes before pulling the old oil filter - just a few copper bits, very tiny.

I have a sample sent off to Blackstone and will report back soon. Just wanted to revive this thread in case there are others interested in this and wanted to document

 

[M-Sport fan]

^^^How high do you rev it during WOT open tracking/autocrossing?

 

[CSM]

^^^How high do you rev it during WOT open tracking/autocrossing?

I kept factory rev limiter. I shift around 6,000 as that is when peak power is for the X37

We will see how the Blackstone results come back. I've used them several times with this car so there is a good record of particulates - we will see if its increased over time which points to wear of some time. Prob a rod bearing.

Fingers crossed!

 

[Zeille]

re-opening this thread
my car is at 158k & has some very small metal specks in the oil (primarily the drain pan) when i do my oil changes. most recently, i had two tiny silver specks (no copper) when i drained before even touching the filter. mind you, this was only at the top of the oil drain pan, so i'm not sure if there's more in the actual oil.

currently running e30 & the oil smelled a fair bit like fuel. changed my OCI to 3k when on e30 & this time i went 3500 before changing it.

is this cause for concern? i understand my motor is getting tired, but i just stress over my car's health. i have had bad cars in the past, and this is my first great car (knock on wood) and i don't want to lose it in any way.

edit: decided i'd get my oil analyzed by blackstone at my next oil change... i'll also cut my filter open at that time

 

[TyphoonFiST]

re-opening this thread
my car is at 158k & has some very small metal specks in the oil (primarily the drain pan) when i do my oil changes. most recently, i had two tiny silver specks (no copper) when i drained before even touching the filter. mind you, this was only at the top of the oil drain pan, so i'm not sure if there's more in the actual oil.

currently running e30 & the oil smelled a fair bit like fuel. changed my OCI to 3k when on e30 & this time i went 3500 before changing it.

is this cause for concern? i understand my motor is getting tired, but i just stress over my car's health. i have had bad cars in the past, and this is my first great car (knock on wood) and i don't want to lose it in any way.

edit: decided i'd get my oil analyzed by blackstone at my next oil change... i'll also cut my filter open at that time

Send in your used oil to Blackstone laboratories to be analyzed. Contact them for Free sample bottles and envelopes too*