Originally Posted By: WyrTwister
Originally Posted By: Tony10s
Classic -- does not have the e-core center tube design; has a metal center tube
Professional -- has e-core design
What is e-core & which of the two is to be preferred ?
Thanks ,
The metal center tube has a sturdier construction is the general idea around here and is less prone to cause catastrophic engine failure in the (unlikely) event the filter media blows apart and gets sucked back into the engine, blocking critical oil passages. GM trusts the e-cores as standard OE replacements in all their service departments so they must be okay. E-cores feature a plastic cage with large gaps in the tube for maximum oil flow and circulation. They're made by Champion Labs, and as long as they don't switch suppliers to Purolator, we shouldn't have to worry about the media failing on an e-core.
I have run the similarly constructed Champ PH820 without major issues to 3 to 5K. These were close outs and the nitrile combo valve started losing ADBV function in less than 3K miles.
The big thing is they don't collapse or tear like others we have seen.
The Classic uses a nitrile ADBV and separate bypass valve. I do not know if the Classic configuration solves the drain back issue or not. Most BITOGERs are more comfortable with the Classic design.
Ive run both classic and ecore. I have been cutting my filters open after use for a wile now and never seen a defect in either. But I only go 3K or 1 year (which ever comes 1st) so I can't comment on their extended OCI use.
I buy them in bulk from RA when they happen to be in the same warehouse as something else I am getting.