Begs the question ..You saw two pleat failures..in 25 years! and you don't know how long they were in service?? GM uses a 4.00 filter in most of engines.. and they make a lot of engines???and are used in a more rigorous/severe environment. This is an excerpt from a oil filter manufacturer who makes oil filters for a slew of companies including Gm..AC/Delco read:
We do manufacture the SuperTech filters and the A/C Delco filters as well. Although, we manufacture them to each companies specifications. All this information is proprietary to them. I have no access to release specific specifications on their products. I can tell you the SuperTech filters are a very good filter for the money. They will have very similar design, and both do use a premium media. We manufacture approximately 20 different brands of filters here, and the Supertech filters are one that I do use on my own vehicle, and never had any issues with them. The SuperTech filters do meet the specifications of the OE filters that they are intended for. Sorry I couldn't be of further help, but let me know if you have any further questions I can help you with.
Bob Buckman
Tech Rep
Champion Labs
1-800-882-0890
We do manufacture the SuperTech filters and the A/C Delco filters as well. Although, we manufacture them to each companies specifications. All this information is proprietary to them. I have no access to release specific specifications on their products. I can tell you the SuperTech filters are a very good filter for the money. They will have very similar design, and both do use a premium media. We manufacture approximately 20 different brands of filters here, and the Supertech filters are one that I do use on my own vehicle, and never had any issues with them. The SuperTech filters do meet the specifications of the OE filters that they are intended for. Sorry I couldn't be of further help, but let me know if you have any further questions I can help you with.
Bob Buckman
Tech Rep
Champion Labs
1-800-882-0890
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