I'm guessing you mean a McCulloch Trimac 210?
2 Stroke oil available at B&Q and HOMEBASE or any hardware shop
Mineral Oil mix at 25:1
Semi-synthetic mix at 32:1
Synthetic 50:1
If you do not know use 25:1
or call ALM Manufacturing 01423 797208 for advice/stockists of the correct oil.
Richard, November 2009