I have a full service oil company (and prefer to keep it that way). Can anyone suggest an appropriate price per gallon to lock in at with a full service company? I was offered $1.99 per gallon for a 4 month period. I usually like to lock in for a year because I have a big tank and relatively low consumption. I do pay for my service contract, but it's only around $100 per year. I'm in central Suffolk County.