05-08-18, 11:33 AM
Is it alright to mix fully synth and semi synth oils?
Both are Castrol Power 1, one is the racing and the other is standard.
I only ask as my local auto store has got an offer on the semi where you get 5 litres for the price of 4 and I already have 1 litre of fully synth in the garage, (as well as an engine fully of it)
Just thinking I can use the remaining 1 litre of fully synth mixed with 2 litres of semi and I'll still have 3 litres of it left for the next oil change?
Both are Castrol Power 1, one is the racing and the other is standard.
I only ask as my local auto store has got an offer on the semi where you get 5 litres for the price of 4 and I already have 1 litre of fully synth in the garage, (as well as an engine fully of it)
Just thinking I can use the remaining 1 litre of fully synth mixed with 2 litres of semi and I'll still have 3 litres of it left for the next oil change?