Sample 1: Factory Fill - 1,451km
https://bobistheoilguy.com/forums/threads/factory-fill-1-451km-2010-ford-focus-2-0l-petrol.154550/
Sample 2: Fuchs Titan GT1 0W20 - 7,415km - TBN 14.11 - OCI 12 months
https://bobistheoilguy.com/forums/threads/fuchs-gt1-0w20-7-415km-2010-ford-focus-2-0l-petrol.173373/
Sample 3: Fuchs Titan GT1 0W20 XTL - 7,110km - TBN 6.09 - OCI 12 months - Initial TBN 8.88
https://bobistheoilguy.com/forums/threads/fuchs-gt1-0w20-7-110km-2010-ford-focus-2-0l.193933/
Sample 4: Fuchs Titan GT1 0W20 XTL - 14,348km - TBN 5.95 - OCI 24 months - Initial TBN 8.00
https://bobistheoilguy.com/forums/threads/fuchs-gt1-0w20-2yrs-14-348km-10-ford-focus-2-0l.233810/
Sample 5: Fuchs Titan GT1 0W20 XTL - 7,925km - TBN: TBC - OCI 16 months
https://bobistheoilguy.com/forums/threads/fuchs-gt1-0w20xtl-16mth-7-925km-10-ford-focus-2-0l.258484/
Sample 6: M1 EP 0W20 - 12,034km - OCI 27 months
https://bobistheoilguy.com/forums/threads/m1-ep-0w20-2yrs-12-034km-2010-ford-focus-2-0l.312887/
Sample 7: M1 EP 0W20 - 17,808km - OCI 4 years - TBN 3.1
https://bobistheoilguy.com/forums/threads/m1-ep-0w20-4yrs-17-808km-2010-ford-focus-2-0l.359401/
Sample 8: M1 EP 0W20 - 10,035km - OCI 2 year - TBN 5.32
Driving Conditions: All city driving
Zero oil added over the 2yrs, stayed right on the full mark.
I don't know where the sodium spike came from. I'll keep an eye on the coolant level and color. Leak be small enough to burn off the water and just leave behind the sodium?
I flushed motor again with spare old but new oil I had on hand. Drained the oil, drained the old filter, reinstalled the old filter. Filled up Castrol Edge 10w60. Ran the car for a few minutes as varying revs. Shut it down, drained the oil, removed the filter.
New prefilled oil filter installed.
Refilled with: Mobil 1 EP 0W20
Filter: PBL10241 Purolator Boss
Schedule OCI: 2yrs
Before oil change:
After flush with old but new Castrol Edge 10w60
New M1 after startup.
https://bobistheoilguy.com/forums/threads/factory-fill-1-451km-2010-ford-focus-2-0l-petrol.154550/
Sample 2: Fuchs Titan GT1 0W20 - 7,415km - TBN 14.11 - OCI 12 months
https://bobistheoilguy.com/forums/threads/fuchs-gt1-0w20-7-415km-2010-ford-focus-2-0l-petrol.173373/
Sample 3: Fuchs Titan GT1 0W20 XTL - 7,110km - TBN 6.09 - OCI 12 months - Initial TBN 8.88
https://bobistheoilguy.com/forums/threads/fuchs-gt1-0w20-7-110km-2010-ford-focus-2-0l.193933/
Sample 4: Fuchs Titan GT1 0W20 XTL - 14,348km - TBN 5.95 - OCI 24 months - Initial TBN 8.00
https://bobistheoilguy.com/forums/threads/fuchs-gt1-0w20-2yrs-14-348km-10-ford-focus-2-0l.233810/
Sample 5: Fuchs Titan GT1 0W20 XTL - 7,925km - TBN: TBC - OCI 16 months
https://bobistheoilguy.com/forums/threads/fuchs-gt1-0w20xtl-16mth-7-925km-10-ford-focus-2-0l.258484/
Sample 6: M1 EP 0W20 - 12,034km - OCI 27 months
https://bobistheoilguy.com/forums/threads/m1-ep-0w20-2yrs-12-034km-2010-ford-focus-2-0l.312887/
Sample 7: M1 EP 0W20 - 17,808km - OCI 4 years - TBN 3.1
https://bobistheoilguy.com/forums/threads/m1-ep-0w20-4yrs-17-808km-2010-ford-focus-2-0l.359401/
Sample 8: M1 EP 0W20 - 10,035km - OCI 2 year - TBN 5.32

Driving Conditions: All city driving
Zero oil added over the 2yrs, stayed right on the full mark.
I don't know where the sodium spike came from. I'll keep an eye on the coolant level and color. Leak be small enough to burn off the water and just leave behind the sodium?
I flushed motor again with spare old but new oil I had on hand. Drained the oil, drained the old filter, reinstalled the old filter. Filled up Castrol Edge 10w60. Ran the car for a few minutes as varying revs. Shut it down, drained the oil, removed the filter.
New prefilled oil filter installed.
Refilled with: Mobil 1 EP 0W20
Filter: PBL10241 Purolator Boss
Schedule OCI: 2yrs
Before oil change:


After flush with old but new Castrol Edge 10w60

New M1 after startup.


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