just a query.
has anybody been told to decarbonise the engine after every oil change.
during my recent service stint, they say , it is preferred during every oil change. cost 1.5k
they say , they clean the turbo intercooler etc to clean off carbon deposits.
i replied, my car has not run enough 12K kms to warrant it and also the manual does not mention it, so i will not pay for that .
the SA reluctantly striked those "labour charges" off.
my question being, is it necessary?