my RB25 using tufoil 10w 40, when i keep drive at 170km/h or
keep 4000rpm for around 10mins, engine oil temp. reach 110, what oil is suitable for RB25 in malaysia?
as I see from caburator engine, the intake of the air got a pipe which is connected to the ezos piping area
and I think the purpose is to suck in hot air to the caburator is it???
then y we change to cool air??