Toyota 4 Cylinder Pickup-1992-75K miles. I am the original owner, have had all the recommended service done by Toyota. I have not used the vehicle much in the past 3 years. Recently when I started the truck, it made a loud noise. I had it towed to Toyota for diagnostics. They said it was the fan belt, which they changed. They did not check the fluids or anything else. I drove the truck up the highway a few miles to charge the battery, and it overheated. I took it back to Toyota. They said the head gasket was blown, and that I would have to pay for it. I said it was their fault for not doing a thorough check, and for sending me out in a car that was not road worthy. They now say that the engine expert says that a head gasket can blow in a vehicle which is left sitting too long and loses fluids, and that it is not likely that the head gasket blew after being driven, that it was probably already blown. They have offered to split the repair cost of $1300. Should I take their offer, or report the case to the Bureau of Automotive Repair?