Another question... what are the feedbacks on using OEM vs. replacement canister filters? Any recommended brand? My dilemma now is i want to change every 10,000m vs. every 20,000km that is recommended by the manual but the Frontier uses two fuel filters and it's quite pricey for the OEM (sets me back around 4K).

What then is more adviseable?
1. Status Quo: Change every 20,000km and stick to the OEM fuel filter
2. Change every 10,000km but employ a replacement brand.