hello everyone !
i have 2 important questions that maybe you'll have an answer for
i have a mitsubishi l200 2004 2.5 4x4 diesel
with around 140 km..but in excellent condition really (motor especially )
my first question is :
i live in portugal (hot weather) winter is around 17-25C summer 28-37C
owners manual say use motor oil -
sae30 \20w40 \15w40\ 10w30 \ 5w30
i went to 4 authorized mitsubishi dealers all told me "here in portugal we put 10w40
and i ask why not follow the manual 15w40 or10w30 maybe ?
they say we use 10w40
and by the way the oil they use is local brand not a genuine mitsubishi oil all of them
i want to know what do you think i should do ?
what oil grade from the list should i use and should i listen to them or folow the manual
i know its not a big difference between 10w40 to 15w40 or 5w30
but still i want to know
and also what do you think about eneos motor oils?

second question
regarding of other fluids such as gear, clutch,breaks steering ....
they also not using the genuine mitsubishi oils
some of them yes but partly some not
do you think thats ok
or should i order the fluids\oil form mitsubishi ?

thank you so much !
Ziv