Originally Posted By: Sayjac
Nice display of Bimmer cartridge options. I find your conclusion(s) about the BMW oem vs the made in Mexico Mann to be interesting and enlightening. Both look to be good quality though.
Your ultimate choice and reasoning for it interesting too. As you seem aware it may be or is maligned by some due to "funny beta ratio".
And since subject already broached, I would agree with follow up comments posted about the FU cartridge especially in (but not limited to) BWM applications. Based on anecdotes posted I don't put the FU cartridge in same category as the spin on. Linked is the last FU BMW anecdote I remember seeing posted.
https://www.bobistheoilguy.com/forums/ubbthreads.php/topics/3930157/Fram_Ultra_=_Piece_of_[censore
Its just not clear to me that my/any engine sheds sufficient particulate. If they did, the ratings on Toyota and Honda filters would notionally be better, or the engines wouldn't last and consume oil.
I think I like the o ring to ensure a seal compared to friction or felt.
People concern about oil viscosity values to get more flow faster at cold start. Enviable for sure, but then lets put a more restrictive filter in there, which also plays into that startup flow scenario. Its well established in the physics of filtering that the smaller the pores the slower a filter will flow. Pores necessarily are smaller to get the ratios without excessive hard pack cake build up too early.
So my basis, fbow, is a better sealing filter with a less restrictive media. Since the car is low use and not a DD, I'll trade efficiency for flow.
Regarding the FU, its a huge assumption that any damage occurs instantly under install, or under use. Use I can marginally see due to pressure pulses at startup, but I'm not convinced we have enough objective basis of why and when it occurred. I don't see running one for 2-4K, perhaps less, to be a big risk. If it fails, I don't know it happened before I unspun the device, and if it fails, I don't see a huge risk to my engine given mileage. And I'll get another one free, and give an engineering sample for them to work on.
But the earliest I'd put it in service is this time next year anyway...
Nice display of Bimmer cartridge options. I find your conclusion(s) about the BMW oem vs the made in Mexico Mann to be interesting and enlightening. Both look to be good quality though.
Your ultimate choice and reasoning for it interesting too. As you seem aware it may be or is maligned by some due to "funny beta ratio".
And since subject already broached, I would agree with follow up comments posted about the FU cartridge especially in (but not limited to) BWM applications. Based on anecdotes posted I don't put the FU cartridge in same category as the spin on. Linked is the last FU BMW anecdote I remember seeing posted.
https://www.bobistheoilguy.com/forums/ubbthreads.php/topics/3930157/Fram_Ultra_=_Piece_of_[censore
Its just not clear to me that my/any engine sheds sufficient particulate. If they did, the ratings on Toyota and Honda filters would notionally be better, or the engines wouldn't last and consume oil.
I think I like the o ring to ensure a seal compared to friction or felt.
People concern about oil viscosity values to get more flow faster at cold start. Enviable for sure, but then lets put a more restrictive filter in there, which also plays into that startup flow scenario. Its well established in the physics of filtering that the smaller the pores the slower a filter will flow. Pores necessarily are smaller to get the ratios without excessive hard pack cake build up too early.
So my basis, fbow, is a better sealing filter with a less restrictive media. Since the car is low use and not a DD, I'll trade efficiency for flow.
Regarding the FU, its a huge assumption that any damage occurs instantly under install, or under use. Use I can marginally see due to pressure pulses at startup, but I'm not convinced we have enough objective basis of why and when it occurred. I don't see running one for 2-4K, perhaps less, to be a big risk. If it fails, I don't know it happened before I unspun the device, and if it fails, I don't see a huge risk to my engine given mileage. And I'll get another one free, and give an engineering sample for them to work on.
But the earliest I'd put it in service is this time next year anyway...