[Vortifex]

In my Case i use X3 F25 35i(N55) i lived in tropical only have 2 season(Summer and rainy season)in summer heat can reach 50°, rainny season is like summer but when goes to rain is below to 32° and 26° at night because i use my car 30-40kh/h traffic jam, common temperature my engine is 100/120 celcius

i want have some disscus with people have been experience use N55 how about i use 10w-40 for long time is since my oli shrinking half every reach 3100km i need

additional for those who are curious my engine have some leak or something i been seek theres no leak from white smoke exhaust, seal, valve Cover gasket, oli pan and rod bearing is still good contion even my specialist mechanic says is normal oli shrinking cause engine work and made on 4 season he recommend oli change every 5000km or 6 months( metric i use is km not miles)