Castrol Edge Engine Oil

[SurreyPaul]

I topped up the engine oil of my Elise Mk1 today with the above oil. I don't have a clue what was already in there except that the oil was changed two years ago by a reputable garage.  I'm worried now about mixing oils of varied viscocity. The label on the bottle says 0W-30 but I've subsequently read that 10w-40 is recommended for the K-Series 1.8. Will I damage the engine by topping up with the only oil available at the shop?  So far I haven't started the engine in case I've made a bad error.

 

[Bibs]

Your oil will be something between 0-10W - 30-40, I doubt very much it'll care that much. If you're super worried, drop the lot and flush/refill plus new filter. Not a hard or expensive job mate