Hi, I have a Cultus Vxr 2019 (almost 42000km driven) i have been pouring Suzuki’s 10w-40 since i got the car but now i want to shift to Total 9000 5W-30 because i have been using it in my honda city 2015 and i am pretty satisfied + a relative is also using this oil in his Cultus and he says that it is a lot better than Suzuki’s SGO oils. My question is that is it safe to shift to a thinner oil after the car is 40000Km driven?