engine oil will last more than 1 yr......!!! OKY..

mga brod....ask ko lang if oky lang ba sa engine oil that will last more than a yr...kc balak ko gamitin ang magandang oil filter at fully engine oil...but my prubs is ung 5k ko kc dati will last 8 mnths..now if i will use fully oil maging 10k na ako mag change oil...
oky lang din ba na tatagal ung oil ko let say 15 mnths..??
thanks....malapit na me mag 5k takbo....