Gud day mga gurus! I have just acquired a Civic VTi '97 and gusto ko sana pa-change oil na as well as A/T fluid. My dilemma is hindi ko alam kung mineral or semi syn or fully syn ba ung current oil nya. Now would it be safe to switch to semi syn in case mineral oil ung gamit nya ngaun? Based on my research kasi eh switching to full syn agad can cause leaks since mas mataas ang detergency nya and lilinisin nya talaga ang engine including those deposits na parang naging seal na sa mga leaks. Thanks in advance for your inputs on this mga sirs!