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Finally sent my UOA sample in and it came back a lot worse than I thought it would. I am attributing it to my wife's use of the remote starter in the winter months as she sometimes leaves it idling for quite a while as we get the kids ready for school then again at the bus stop. She has promised...

Nothing new here, just posting an update. I had to change early to replace my oil filter housing gasket. Also, the oil filter housing gasket was changed at the time this sample was taken so may show something on the next UOA, not this one as indicated in the comments below. Link to previous...

Looks like my numbers are somewhat trending towards the current formula now. I was unaware the formula had changed so i was mixing bottles before causing a lot of confusion. My reason for changing at low miles was due to MIL and I was going on a trip towing my camper. Previous UOA HERE Code...

Hi All, My last UOA had a sudden spike in iron which seems to have dropped back off. Fuel is still high due to my wife's addiction to the remote start (it's been cold here). I also forgot to mention last time that she switched to 87 octane for the winter, which may not be burning completely...

Nothing major here other than fuel, which I don't think is an issue. Sample was taken when engine was hot. I think i will stick with 7k-7.5k intervals. Mostly posting for other member reference. Link to previous UOA: HERE Code Comment: This turned out to be another great report for your...

Not sure what to make of this. I was expecting a stellar report and I have all this iron. I towed more with the old oil and it was MC 5w-20. I only towed one short trip this summer and had some decent long hauls otherwise; doesn't make sense. I put Edge 0w-40 back in so will see if this was a...

So the dealer put 5w-20 rather than the specified 5w-30 (which I knew from the invoice) but it still did OK. I did a lot of towing with this in summer traffic so I am impressed. I now have Edge 0w40 in there which has been proven in DI turbos and did well in my 335 so I expect the next UOA to be...

Switched to Castrol Edge 0w-40 after Mobil-1 0w-40 lost its BMW cert and I am glad I did after seeing this UOA: LINK Though not terrible, it's not what I would expect after only 4k miles. Link to previous UOA can be found HERE Code: MAKE/MODEL: BMW 3.0L (N55) I-6 Turbo OIL...

This is my wife's new rig. She drives it 90% in-town, stop and go, short distances (school, grocery, etc). It will get some distance towing this summer. More of a curiosity sample here, knew the metals would be high etc but wanted a starting point. Not sure what the oil is but it's getting...

Hey All, Just picked up a new 2017 Expedition with Ecoboost and it calls for Ford WSS-M2C946-A, which seems to be 5w-30 only. I want to run 0w-40 but it seems none of them carry that cert so I was curious if I would be superseding the 5w-30 cert with WSS-M2C937-A? I have looked all over and...

Not sure where the Potassium was coming from but it is gone now. I went ahead and changed the oil filter housing gasket anyways just in case which is a common cause but that must have been fine. Switched to Castrol 0w-40 this time around due to reformulated M1 0w-40 losing the LL-01 cert. I...

I was worried about iron again, but I had a bit more Potassium this time. I'm thinking (hoping) it's the oil filter housing gasket allowing cross contamination which is common on these engines. I ordered up a new gasket and will replace this weekend. Thread to last report is HERE Code...

Last free oil change at dealership so previous oil wasn't in long enough to justify a report. I did request TAN but they didn't do it. Not sure what's up with that. I have M1 0w-40 in there now, will change it out in 7500 miles. Old thread for last report is HERE Code: Comment: We...

New report, this time with M1 0w-40, no filter change, winter. I'll try to get a report on the next one but it will probably be well below 5k miles as my last free oil change at dealer is due in July, may not be worth it. Old thread for first report is HERE Report: Code: BLACKSTONE...

Long time reader, first post. I haven't seen many 335 UAO so here's mine. Last time I changed the oil, it smelled like fuel so bad I could have probably put it in my gas tank. Unfortunately, I didn't get a UOA. It was BMW oil w/ ~8500mi on it, so decided to play it safer this time. Currently...