blitz
Senior Member
- Joined
- Jan 25, 2020
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- Location
- Virginia
- Vehicle(s)
- 2019 Civic Type R
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- #1
I made an interesting observation today that may lead to explaining why some members had some minor oil seepage originating from their OEM Honda Filter (15400-PLM-A02).
Observation: Upon examining the upper, filter gasket of the OEM filter, I noticed that the gasket did not fully occupy the seating surface on the filter. A void is present in this recess that allows the gasket to shift. My friend’s filter, with a different assembly number, also exhibited the same deformity in the gasket’s seating in the filter. Out of curiosity, I purchased a Fram Ultra Synthetic filter for the same application and size (XG7317), and this filter had a heavier gauge gasket that was firmly seated and flush on the upper filter, and exhibited no free-play. I chose this filter for comparison because it has the same base plate and overall design of the OEM filter, except it has better filtration and is designed for synthetic oils. Other brands, like Purolator and Wix, for example have different base plate designs. My choice for comparison was not for performance purposes, but for physical purposes to show how the gasket should be designed and fitted onto a filter. This observation may may or may not be leading to the oil seepage, but a loose fitting oil filter gasket generally does not provide a good seal to prevent oil leaks.
Complaints of oil seepage from OEM oil filter:
1. https://www.civicx.com/forum/threads/diy-oil-change-reference-civic-type-r.21976/#post-385439
2. https://www.civicx.com/forum/threads/diy-oil-change-reference-civic-type-r.21976/#post-370922
3. https://www.civicx.com/forum/threads/diy-oil-change-reference-civic-type-r.21976/#post-385459
Assembly number: A00421 (initially wrapped)
Shifted the gasket to show replicating gap on opposite side:
Assembly number: A92631 (friend’s filter)
Fram Ultra Synthetic XG7317:
Proper fitting of gasket with no free-play. Overall, better construction than OEM, on left.
Observation: Upon examining the upper, filter gasket of the OEM filter, I noticed that the gasket did not fully occupy the seating surface on the filter. A void is present in this recess that allows the gasket to shift. My friend’s filter, with a different assembly number, also exhibited the same deformity in the gasket’s seating in the filter. Out of curiosity, I purchased a Fram Ultra Synthetic filter for the same application and size (XG7317), and this filter had a heavier gauge gasket that was firmly seated and flush on the upper filter, and exhibited no free-play. I chose this filter for comparison because it has the same base plate and overall design of the OEM filter, except it has better filtration and is designed for synthetic oils. Other brands, like Purolator and Wix, for example have different base plate designs. My choice for comparison was not for performance purposes, but for physical purposes to show how the gasket should be designed and fitted onto a filter. This observation may may or may not be leading to the oil seepage, but a loose fitting oil filter gasket generally does not provide a good seal to prevent oil leaks.
Complaints of oil seepage from OEM oil filter:
1. https://www.civicx.com/forum/threads/diy-oil-change-reference-civic-type-r.21976/#post-385439
2. https://www.civicx.com/forum/threads/diy-oil-change-reference-civic-type-r.21976/#post-370922
3. https://www.civicx.com/forum/threads/diy-oil-change-reference-civic-type-r.21976/#post-385459
Assembly number: A00421 (initially wrapped)
Shifted the gasket to show replicating gap on opposite side:
Assembly number: A92631 (friend’s filter)
Fram Ultra Synthetic XG7317:
Proper fitting of gasket with no free-play. Overall, better construction than OEM, on left.
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