I have a JCW
(R56), and as every JCW
owner knows, these engines are oil thirsty.
I ordered 10x1 ltrs of the recommended Castrol 5W-30 in bulk, but noticed the other day that Halfords sell their own brand with the same spec BMW LL-04
at half the price, so was wondering on any thoughts about using this oil?
My thoughts would be to use it and change the oil more frequently, which then makes it more affordable.
I have been thinking using an oil cleaning agent to flush out the old and replenish with fresh oil. With the price of the BMW approved Castrol oil at £20 per ltr, this becomes an expensive option for interim oil changes .
Not sure also, if mixing this Halfords oil with the existing Castrol (as a top up) is recommended too?