HAve bought a house and inherited a four door oil fired aga. The previous owners only used premium oil and stressed it is essential to the running of the aga. Their supplier (Goff) suggested that was too expensive and that standard oil topped up with Topanol would be sufficient. Now I hear that aga sanction the use of standard oil with Glowmax - an additive that cleans the oil produced and delivered by Total Butler. I spoke to Total Butler who said that Topanol is carcinogenic and they are surprised it is still used at all. Obviously the kitchen will the the heart of the home for our three young children - am I exposing them to risk or am I being paranoid? I have successfully given up smoking so don't want to start inhaling toxic oil additives instead!