Hi! Super newbie here so wanted to ask, I have a 2013 ford focus 2.0 and I wanted to do an oil change outside of casa. Gusto ko sana is an oil change outside once a year and casa pms once a year.

Anyway, I checked the manual and it says 5w30 ang oil spec. I noticed tho that my casa has been putting in 5w40 shell fully synthetic for the last couple of years.did a bit of research and I guess it "should" be ok, given that it might be better for our outside Temps. So anyway, checked out a service station near us, super miler, and they offer oil change using caltex havoline pro ds fully synthetic oil, 5w30.

My question is, ok lang ba change oil to havoline fs 5w30, then casa in 6 months where I'll assume they'll put shell fs 5w40, then 5w30 again after 6 months?

Also, is it better to stick to oem oil filter (about douvle the price of they procure) or is it ok to use the brand they're using (bosch, I'm assuming the non premium version).

Thank you for the help!